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ghormann at alumni

Apr 15, 2011, 4:28 AM

Post #1 of 26 (4302 views)
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LIRC and MythBuntu 10.10

This is exactly myth related, but it is such a knowledgeable community....

I just seem to have no luck with LIRC blasting. I have an HD-PVR and
initially setup HD-PVR to perform the blasting via lirc_zilog.
(Followed the procedure outlined in
http://www.mythtv.org/wiki/Hauppauge_HD-PVR#HD-PVR_Driver_Compilation_Howto).
Unfortunately, the HD-PVR would lockup after a while with the
lirc_zilog loaded. With the module unloaded, it seems fine. (Too
bad, because ir blasting and the remote seemed to work fine!)

I then tried to configure using serial port. I copied over the
lircd.conf file from the old server, setup hardware.conf and restarted
the service. The lirc_serial module seems to correctly load, but the
it doesn't change the channels. (Unfortunately this blaster doesn't
light up like the HD_PVR, so I can't see if a signal is actually being
sent, but if I plug it back into the old mythserver it still works..)

I found some notes suggesting there were some issues with serial
blasting in October and early January.

https://bugzilla.redhat.com/show_bug.cgi?id=658600
http://www.gossamer-threads.com/lists/mythtv/users/455608?do=post_view_threaded#455608

Im running MythBuntu 10.10, 2.6.35-28, and lircd 0.8.7-pre3. Any
suggestions on what to try next?
1) finding a combination of driver and lircd that works with hd-pvr
2) patching up lircd (not exactly sure how to do that now)
3) Wipe and install 10.4?
4) Gentoo? -- My old box is Gentoo, but MythBuntu just seems "easier"
at the time. :-)

I do remember when I built the old box years ago, that the major
version was important. I tried multiple combinations to get it to 61
on 10.10, but none worked so I gave up. I see others have 250 in the
web, so I'm assuming that is no longer an issue....

Thanks,
Greg.

ghormann [at] tvServe:/usr/local/bin$ dmesg | grep ttyS0
[ 0.970480] serial8250: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A
[ 0.970721] 00:0b: ttyS0 at I/O 0x3f8 (irq = 4) is a 16550A

ghormann [at] tvServe:/usr/local/bin$ dmesg | grep lirc
[ 18.302736] lirc_dev: IR Remote Control driver registered, major 250
[ 18.389361] lirc_serial: module is from the staging directory, the
quality is unknown, you have been warned.
[ 19.346762] lirc_serial: auto-detected active high receiver
[ 19.346836] lirc_serial lirc_serial.0: lirc_dev: driver lirc_serial
registered at minor = 0

ghormann [at] tvServe:/usr/local/bin$ sudo modprobe -c | grep lirc
#alias char-major-61 lirc_dev
options lirc_serial irq=4 io=0x3f8
#options lirc_serial irq=3 io=0x2f8

ghormann [at] tvServe:/usr/local/bin$ lsmod | grep ir
lirc_serial 12654 0
lirc_dev 11209 1 lirc_serial
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mythtv at rtr

Apr 15, 2011, 6:25 AM

Post #2 of 26 (4254 views)
Permalink

Re: LIRC and MythBuntu 10.10 [In reply to]

On 11-04-15 07:28 AM, Greg Hormann wrote:
> This is exactly myth related, but it is such a knowledgeable community....
>
> I just seem to have no luck with LIRC blasting. I have an HD-PVR and
> initially setup HD-PVR to perform the blasting via lirc_zilog.
> (Followed the procedure outlined in
> http://www.mythtv.org/wiki/Hauppauge_HD-PVR#HD-PVR_Driver_Compilation_Howto).
> Unfortunately, the HD-PVR would lockup after a while with the
> lirc_zilog loaded. With the module unloaded, it seems fine. (Too
> bad, because ir blasting and the remote seemed to work fine!)
>
> I then tried to configure using serial port. I copied over the
> lircd.conf file from the old server, setup hardware.conf and restarted
> the service. The lirc_serial module seems to correctly load, but the
> it doesn't change the channels. (Unfortunately this blaster doesn't
> light up like the HD_PVR, so I can't see if a signal is actually being
> sent, but if I plug it back into the old mythserver it still works..)
>
> I found some notes suggesting there were some issues with serial
> blasting in October and early January.
>
> https://bugzilla.redhat.com/show_bug.cgi?id=658600
> http://www.gossamer-threads.com/lists/mythtv/users/455608?do=post_view_threaded#455608

The lirc_serial in many kernels was never tested before release,
and has a nasty bug that prevents it from working.
Fortunately, the fix is rather simple:

--- b0rked/drivers/staging/lirc/lirc_serial.c 2011-01-04
19:50:19.000000000 -0500
+++ linux/drivers/staging/lirc/lirc_serial.c 2011-02-06 15:33:49.854453928 -0500
@@ -966,7 +966,7 @@
if (n % sizeof(int) || count % 2 == 0)
return -EINVAL;
wbuf = memdup_user(buf, n);
- if (PTR_ERR(wbuf))
+ if (IS_ERR(wbuf))
return PTR_ERR(wbuf);
spin_lock_irqsave(&hardware[type].lock, flags);
if (type == LIRC_IRDEO) {
-----

If that fix is not already in Ubuntu-10.10, then you should probably
pursue the Ubuntu kernel maintainers and try to get it added there.

Cheers
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mythtv at rtr

Apr 15, 2011, 6:30 AM

Post #3 of 26 (4245 views)
Permalink

Re: LIRC and MythBuntu 10.10 [In reply to]

On 11-04-15 09:25 AM, Mark Lord wrote:
>
> The lirc_serial in many kernels was never tested before release,
> and has a nasty bug that prevents it from working.
> Fortunately, the fix is rather simple:
>
> --- b0rked/drivers/staging/lirc/lirc_serial.c 2011-01-04
> 19:50:19.000000000 -0500
> +++ linux/drivers/staging/lirc/lirc_serial.c 2011-02-06 15:33:49.854453928 -0500
> @@ -966,7 +966,7 @@
> if (n % sizeof(int) || count % 2 == 0)
> return -EINVAL;
> wbuf = memdup_user(buf, n);
> - if (PTR_ERR(wbuf))
> + if (IS_ERR(wbuf))
> return PTR_ERR(wbuf);
> spin_lock_irqsave(&hardware[type].lock, flags);
> if (type == LIRC_IRDEO) {
> -----
>
> If that fix is not already in Ubuntu-10.10, then you should probably
> pursue the Ubuntu kernel maintainers and try to get it added there.

Note that there are also memory leaks in those same b0rked versions
of lirc_serial and pals, and there is a more comprehensive patch
available to take care of those as well as the fix above.
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jarod at wilsonet

Apr 15, 2011, 7:59 AM

Post #4 of 26 (4243 views)
Permalink

Re: LIRC and MythBuntu 10.10 [In reply to]

On Apr 15, 2011, at 9:25 AM, Mark Lord wrote:

> On 11-04-15 07:28 AM, Greg Hormann wrote:
>> This is exactly myth related, but it is such a knowledgeable community....
>>
>> I just seem to have no luck with LIRC blasting. I have an HD-PVR and
>> initially setup HD-PVR to perform the blasting via lirc_zilog.
>> (Followed the procedure outlined in
>> http://www.mythtv.org/wiki/Hauppauge_HD-PVR#HD-PVR_Driver_Compilation_Howto).
>> Unfortunately, the HD-PVR would lockup after a while with the
>> lirc_zilog loaded. With the module unloaded, it seems fine. (Too
>> bad, because ir blasting and the remote seemed to work fine!)
>>
>> I then tried to configure using serial port. I copied over the
>> lircd.conf file from the old server, setup hardware.conf and restarted
>> the service. The lirc_serial module seems to correctly load, but the
>> it doesn't change the channels. (Unfortunately this blaster doesn't
>> light up like the HD_PVR, so I can't see if a signal is actually being
>> sent, but if I plug it back into the old mythserver it still works..)
>>
>> I found some notes suggesting there were some issues with serial
>> blasting in October and early January.
>>
>> https://bugzilla.redhat.com/show_bug.cgi?id=658600
>> http://www.gossamer-threads.com/lists/mythtv/users/455608?do=post_view_threaded#455608
>
> The lirc_serial in many kernels was never tested before release,
> and has a nasty bug that prevents it from working.

Receive was tested and worked just fine, only transmit was broken.
This was fixed upstream ~3 months ago.

> If that fix is not already in Ubuntu-10.10, then you should probably
> pursue the Ubuntu kernel maintainers and try to get it added there.

Good luck, I tried pushing fixes to them several months ago for some
of the many issues their shipping imon driver has. Unless the fixes
came in via the -stable tree, it didn't meet their stable update
release criteria, or something like that. Since the imon bits in the
Ubuntu kernel were acquired via a backport, there's no corresponding
stable tree bits. Same thing for lirc_serial.

My suggestion for anyone running Ubuntu that is experiencing IR driver
issues is to go this route:

http://linuxtv.org/wiki/index.php/How_to_Obtain,_Build_and_Install_V4L-DVB_Device_Drivers

--
Jarod Wilson
jarod [at] wilsonet

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mythtv at rtr

Apr 15, 2011, 8:24 AM

Post #5 of 26 (4240 views)
Permalink

Re: LIRC and MythBuntu 10.10 [In reply to]

On 11-04-15 07:28 AM, Greg Hormann wrote:
..
> I then tried to configure using serial port. I copied over the
> lircd.conf file from the old server, setup hardware.conf and restarted
> the service. The lirc_serial module seems to correctly load, but the
> it doesn't change the channels. (Unfortunately this blaster doesn't
> light up like the HD_PVR, so I can't see if a signal is actually being
> sent, but if I plug it back into the old mythserver it still works..)

I didn't break it, but I can fix it.

Grab this tarball, unpack it, and use "make clean install".
Then reboot. Presto, working lirc_serial blaster.

http://rtr.ca/lirc_serial_fixed.tar.gz

Mind you, it only works as well as the code therein.
I find it to be rather spotty when run on a busy mythtv system.
Sometimes it works, sometimes it only partially works,
depending upon how busy the rest of the system is.

Someday I really ought to write a proper implementation for this thing,
except I don't actually need/use it myself.

Cheers
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jarod at wilsonet

Apr 15, 2011, 8:29 AM

Post #6 of 26 (4237 views)
Permalink

Re: LIRC and MythBuntu 10.10 [In reply to]

On Apr 15, 2011, at 11:24 AM, Mark Lord wrote:

> On 11-04-15 07:28 AM, Greg Hormann wrote:
> ..
>> I then tried to configure using serial port. I copied over the
>> lircd.conf file from the old server, setup hardware.conf and restarted
>> the service. The lirc_serial module seems to correctly load, but the
>> it doesn't change the channels. (Unfortunately this blaster doesn't
>> light up like the HD_PVR, so I can't see if a signal is actually being
>> sent, but if I plug it back into the old mythserver it still works..)
>
> I didn't break it, but I can fix it.
>
> Grab this tarball, unpack it, and use "make clean install".
> Then reboot. Presto, working lirc_serial blaster.
>
> http://rtr.ca/lirc_serial_fixed.tar.gz
>
> Mind you, it only works as well as the code therein.
> I find it to be rather spotty when run on a busy mythtv system.
> Sometimes it works, sometimes it only partially works,
> depending upon how busy the rest of the system is.
>
> Someday I really ought to write a proper implementation for this thing,
> except I don't actually need/use it myself.

Yeah, it needs a significant rewrite if its ever going to get out
of staging, but I don't know that anyone really wants to touch it
badly enough to make it happen. Its by far my least favorite IR
driver that any significant number of people use. (I have even
more disdain for lirc_parallel and lirc_sir, but very few people
actually use those).

--
Jarod Wilson
jarod [at] wilsonet

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dlinvill at networksdown

Apr 15, 2011, 8:32 AM

Post #7 of 26 (4247 views)
Permalink

Re: LIRC and MythBuntu 10.10 [In reply to]

On Fri, Apr 15, 2011 at 6:28 AM, Greg Hormann
<ghormann [at] alumni>wrote:

> This is exactly myth related, but it is such a knowledgeable community....
>
> I just seem to have no luck with LIRC blasting. I have an HD-PVR and
> initially setup HD-PVR to perform the blasting via lirc_zilog.
> (Followed the procedure outlined in
> http://www.mythtv.org/wiki/Hauppauge_HD-PVR#HD-PVR_Driver_Compilation_Howto
> ).
> Unfortunately, the HD-PVR would lockup after a while with the
> lirc_zilog loaded. With the module unloaded, it seems fine. (Too
> bad, because ir blasting and the remote seemed to work fine!)
>
>
I had luck on 10.04 (LTS) installing an 2.6.38 kernel from some kind of ppa
backport and using the lirc_zilog with a module option to only do transmit.
I did not update lirc.

The 2.6.38 upgrade was required just to get the never version hd-pvr
working.

The transmit only module option removed the errors from dmesg and I have
been running this way for over 3 weeks with no errors or missed changes.

David

ghormann at alumni

Apr 15, 2011, 8:35 AM

Post #8 of 26 (4237 views)
Permalink

Re: LIRC and MythBuntu 10.10 [In reply to]

On Fri, Apr 15, 2011 at 10:59 AM, Jarod Wilson <jarod [at] wilsonet> wrote:
>> If that fix is not already in Ubuntu-10.10, then you should probably
>> pursue the Ubuntu kernel maintainers and try to get it added there.
>
> Good luck, I tried pushing fixes to them several months ago for some
> of the many issues their shipping imon driver has. Unless the fixes
> came in via the -stable tree, it didn't meet their stable update
> release criteria, or something like that. Since the imon bits in the
> Ubuntu kernel were acquired via a backport, there's no corresponding
> stable tree bits. Same thing for lirc_serial.

Jarod has *way* more influence than I'll ever have, so we'll consider
me pushing them a non starter. :-)

>
> My suggestion for anyone running Ubuntu that is experiencing IR driver
> issues is to go this route:
>
> http://linuxtv.org/wiki/index.php/How_to_Obtain,_Build_and_Install_V4L-DVB_Device_Drivers

Um. �I'll have to play with this some more. �I tried it a few weeks
ago, but ended up with a build failure that didn't appear to be
firedtv related. I'll spend some more time on it this time...

Greg
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mythtv at rtr

Apr 15, 2011, 8:45 AM

Post #9 of 26 (4242 views)
Permalink

Re: LIRC and MythBuntu 10.10 [In reply to]

On 11-04-15 11:29 AM, Jarod Wilson wrote:
> On Apr 15, 2011, at 11:24 AM, Mark Lord wrote:
>
>> Grab this tarball, unpack it, and use "make clean install".
>> Then reboot. Presto, working lirc_serial blaster.
>>
>> http://rtr.ca/lirc_serial_fixed.tar.gz
>>
>> Mind you, it only works as well as the code therein.
>> I find it to be rather spotty when run on a busy mythtv system.
>> Sometimes it works, sometimes it only partially works,
>> depending upon how busy the rest of the system is.
>>
>> Someday I really ought to write a proper implementation for this thing,
>> except I don't actually need/use it myself.
>
> Yeah, it needs a significant rewrite if its ever going to get out
> of staging, but I don't know that anyone really wants to touch it
> badly enough to make it happen. Its by far my least favorite IR
> driver that any significant number of people use. (I have even
> more disdain for lirc_parallel and lirc_sir, but very few people
> actually use those).

That's a bit of a shame, really, because it is by far the most
economical and least-wasteful method for adding an IR-Blaster.

What it needs to work properly, is a way to pass in the whole
channel change sequence in one go. Then the in-kernel part can
clock the whole thing out in (soft) real-time with pretty decent
reliability.

But at present, each digit is a whole new kernel system call,
and the scheduling delays back at the original script/app just
kill any attempt at reliable timing. Except when the system is idle.

Cheers
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mlists at dressler

Apr 15, 2011, 8:49 AM

Post #10 of 26 (4244 views)
Permalink

Re: LIRC and MythBuntu 10.10 [In reply to]

On 04/15/2011 11:24 AM, Mark Lord wrote:
> On 11-04-15 07:28 AM, Greg Hormann wrote:
> ..
>> I then tried to configure using serial port. I copied over the
>> lircd.conf file from the old server, setup hardware.conf and restarted
>> the service. The lirc_serial module seems to correctly load, but the
>> it doesn't change the channels. (Unfortunately this blaster doesn't
>> light up like the HD_PVR, so I can't see if a signal is actually being
>> sent, but if I plug it back into the old mythserver it still works..)
> I didn't break it, but I can fix it.
>
> Grab this tarball, unpack it, and use "make clean install".
> Then reboot. Presto, working lirc_serial blaster.
>
> http://rtr.ca/lirc_serial_fixed.tar.gz
>
> Mind you, it only works as well as the code therein.
> I find it to be rather spotty when run on a busy mythtv system.
> Sometimes it works, sometimes it only partially works,
> depending upon how busy the rest of the system is.
>
> Someday I really ought to write a proper implementation for this thing,
> except I don't actually need/use it myself.
>
I just tried this because I can't get the lirc module to see my
available serial port. Everything was working fine until I upgraded to
2.6.38. I also use the v4l git (media_build). I get this error:
[ 24.867152] lirc_serial: disagrees about version of symbol
lirc_register_driver
[ 24.867159] lirc_serial: Unknown symbol lirc_register_driver (err -22)
[ 24.873145] lirc_serial: disagrees about version of symbol
lirc_register_driver

If the driver in v4l it consistently says my serial port is busy and run
setserial - and yes, I run setserial to diable the uart.

Any suggestions?

Norm
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mythtv at rtr

Apr 15, 2011, 8:55 AM

Post #11 of 26 (4239 views)
Permalink

Re: LIRC and MythBuntu 10.10 [In reply to]

On 11-04-15 11:49 AM, mlists wrote:
> On 04/15/2011 11:24 AM, Mark Lord wrote:
>> On 11-04-15 07:28 AM, Greg Hormann wrote:
>> ..
>>> I then tried to configure using serial port. I copied over the
>>> lircd.conf file from the old server, setup hardware.conf and restarted
>>> the service. The lirc_serial module seems to correctly load, but the
>>> it doesn't change the channels. (Unfortunately this blaster doesn't
>>> light up like the HD_PVR, so I can't see if a signal is actually being
>>> sent, but if I plug it back into the old mythserver it still works..)
>> I didn't break it, but I can fix it.
>>
>> Grab this tarball, unpack it, and use "make clean install".
>> Then reboot. Presto, working lirc_serial blaster.
>>
>> http://rtr.ca/lirc_serial_fixed.tar.gz
>>
>> Mind you, it only works as well as the code therein.
>> I find it to be rather spotty when run on a busy mythtv system.
>> Sometimes it works, sometimes it only partially works,
>> depending upon how busy the rest of the system is.
>>
>> Someday I really ought to write a proper implementation for this thing,
>> except I don't actually need/use it myself.
>>
> I just tried this because I can't get the lirc module to see my
> available serial port. Everything was working fine until I upgraded to
> 2.6.38. I also use the v4l git (media_build). I get this error:
> [ 24.867152] lirc_serial: disagrees about version of symbol
> lirc_register_driver
> [ 24.867159] lirc_serial: Unknown symbol lirc_register_driver (err -22)
> [ 24.873145] lirc_serial: disagrees about version of symbol
> lirc_register_driver

make clean ; make install ; reboot

??
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mythtv at rtr

Apr 15, 2011, 9:02 AM

Post #12 of 26 (4240 views)
Permalink

Re: LIRC and MythBuntu 10.10 [In reply to]

On 11-04-15 11:55 AM, Mark Lord wrote:
> On 11-04-15 11:49 AM, mlists wrote:
>> On 04/15/2011 11:24 AM, Mark Lord wrote:
>>> On 11-04-15 07:28 AM, Greg Hormann wrote:
>>> ..
>>>> I then tried to configure using serial port. I copied over the
>>>> lircd.conf file from the old server, setup hardware.conf and restarted
>>>> the service. The lirc_serial module seems to correctly load, but the
>>>> it doesn't change the channels. (Unfortunately this blaster doesn't
>>>> light up like the HD_PVR, so I can't see if a signal is actually being
>>>> sent, but if I plug it back into the old mythserver it still works..)
>>> I didn't break it, but I can fix it.
>>>
>>> Grab this tarball, unpack it, and use "make clean install".
>>> Then reboot. Presto, working lirc_serial blaster.
>>>
>>> http://rtr.ca/lirc_serial_fixed.tar.gz
>>>
>>> Mind you, it only works as well as the code therein.
>>> I find it to be rather spotty when run on a busy mythtv system.
>>> Sometimes it works, sometimes it only partially works,
>>> depending upon how busy the rest of the system is.
>>>
>>> Someday I really ought to write a proper implementation for this thing,
>>> except I don't actually need/use it myself.
>>>
>> I just tried this because I can't get the lirc module to see my
>> available serial port. Everything was working fine until I upgraded to
>> 2.6.38. I also use the v4l git (media_build). I get this error:
>> [ 24.867152] lirc_serial: disagrees about version of symbol
>> lirc_register_driver
>> [ 24.867159] lirc_serial: Unknown symbol lirc_register_driver (err -22)
>> [ 24.873145] lirc_serial: disagrees about version of symbol
>> lirc_register_driver
>
> make clean ; make install ; reboot

Oh, I know what's going on.. the v4l snapshot installed its copy
of lirc_serial.ko in a different location from the default for ubuntu.
So your system is getting a bit confused there by all of that.

I can't help much with systems that replace the in-kernel drivers
with the v4l snapshots -- too many variables for me to guess and deal with.

So just remove the lirc_serial.ko file from the system:
rm /lib/modules/`uname -r`/kernel/drivers/staging/lirc/lirc_serial.ko
and then rebuild/reinstall your v4l snapshot drivers again.

* * *

The "always busy" serial port bug in v4l/lirc (dunno which) is also something
I remember seeing once. I had to hack lirc source code to remove the offending
"O_EXCL" flag from something.

I don't use LIRC, lirc_serial, or the v4l sources here, so I can't help with those.

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jarod at wilsonet

Apr 15, 2011, 10:47 AM

Post #13 of 26 (4239 views)
Permalink

Re: LIRC and MythBuntu 10.10 [In reply to]

On Apr 15, 2011, at 11:35 AM, Greg Hormann wrote:

> On Fri, Apr 15, 2011 at 10:59 AM, Jarod Wilson <jarod [at] wilsonet> wrote:
>>> If that fix is not already in Ubuntu-10.10, then you should probably
>>> pursue the Ubuntu kernel maintainers and try to get it added there.
>>
>> Good luck, I tried pushing fixes to them several months ago for some
>> of the many issues their shipping imon driver has. Unless the fixes
>> came in via the -stable tree, it didn't meet their stable update
>> release criteria, or something like that. Since the imon bits in the
>> Ubuntu kernel were acquired via a backport, there's no corresponding
>> stable tree bits. Same thing for lirc_serial.
>
> Jarod has *way* more influence than I'll ever have, so we'll consider
> me pushing them a non starter. :-)

Well, if its *just* a small patch for lirc_serial, it might have a
better shot than the much more involved imon fixes I asked them to
take in. Then again, Ubuntu 11.04 ought to be released Real Soon
Now, and should have a fully functional lirc_serial. Or not. It
looks like that fix went in post-2.6.37, and 11.04 is shipping with
a 2.6.37.x-based kernel. So it would seem a 2.6.37.x stable tree
backport of that patch is probably in order. Sigh. I think there
are probably a few others I should send to the 37 stable tree to
head off another 6 months of already-fixed IR issue reports from
Ubuntu users...

>> My suggestion for anyone running Ubuntu that is experiencing IR driver
>> issues is to go this route:
>>
>> http://linuxtv.org/wiki/index.php/How_to_Obtain,_Build_and_Install_V4L-DVB_Device_Drivers
>
> Um. I'll have to play with this some more. I tried it a few weeks
> ago, but ended up with a build failure that didn't appear to be
> firedtv related. I'll spend some more time on it this time...

Its occasionally a losing battle keeping all the latest media tree
code compiling on older kernels. Report build failures to
linux-media [at] vger and we'll try to get them fixed and/or
offer work-arounds.

--
Jarod Wilson
jarod [at] wilsonet

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f-myth-users at media

Apr 15, 2011, 8:01 PM

Post #14 of 26 (4221 views)
Permalink

LIRC and MythBuntu 10.10 [In reply to]

> Date: Fri, 15 Apr 2011 13:47:16 -0400
> From: Jarod Wilson <jarod [at] wilsonet>

> looks like that fix went in post-2.6.37, and 11.04 is shipping with
> a 2.6.37.x-based kernel.

No it's not. Current 11.04 is already 2.6.38-8, which I'm running on
an experimental basis on a test machine here.

http://kernel.ubuntu.com/~kernel-ppa/info/kernel-version-map.html
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ghormann at alumni

Apr 16, 2011, 4:31 AM

Post #15 of 26 (4265 views)
Permalink

Re: LIRC and MythBuntu 10.10 [In reply to]

On Fri, Apr 15, 2011 at 1:47 PM, Jarod Wilson <jarod [at] wilsonet> wrote:
>>> My suggestion for anyone running Ubuntu that is experiencing IR driver
>>> issues is to go this route:
>>>
>>> http://linuxtv.org/wiki/index.php/How_to_Obtain,_Build_and_Install_V4L-DVB_Device_Drivers
>>
>> Um. �I'll have to play with this some more. �I tried it a few weeks
>> ago, but ended up with a build failure that didn't appear to be
>> firedtv related. I'll spend some more time on it this time...
>
> Its occasionally a losing battle keeping all the latest media tree
> code compiling on older kernels. Report build failures to
> linux-media [at] vger and we'll try to get them fixed and/or
> offer work-arounds.
>

With a little bit of work, I did get it installed. But unfortunately
it still locks up after just a few recordings.

Building (Solved)
----------------------------------
1) Hit the same build problem again. Luckily I found s a message
Jared posted on Monday with the workaround.
http://sourceforge.net/mailarchive/message.php?msg_id=27353778

2) Rebooted

$ dmesg | grep lirc
[ 13.993572] lirc_dev: IR Remote Control driver registered, major 249
[ 13.994707] lirc_zilog: module is from the staging directory, the
quality is unknown, you have been warned.
[ 13.995144] lirc_zilog: disagrees about version of symbol
lirc_register_driver
[ 13.995147] lirc_zilog: Unknown symbol lirc_register_driver (err -22)

After some digging figured out that LIRC_ZILOG was no longer in the
default v4l/.config file. So I went an added the line below rebuild,
and reinstalled

CONFIG_LIRC_ZILOG=m

3) After the reboot, things look better.

[ 48.016937] lirc_dev: IR Remote Control driver registered, major 249
[ 48.172058] lirc_zilog: Zilog/Hauppauge IR driver initializing
[ 48.173048] lirc_zilog: probing IR Rx on Hauppage HD PVR I2C (i2c-0)
[ 48.173115] lirc_zilog: probe of IR Rx on Hauppage HD PVR I2C
(i2c-0) done. Waiting on IR Tx.
[ 48.173120] lirc_zilog: probe of IR Rx on Hauppage HD PVR I2C (i2c-0) done
[ 48.173131] lirc_zilog: probing IR Tx on Hauppage HD PVR I2C (i2c-0)
[ 48.193085] i2c i2c-0: lirc_dev: lirc_register_driver: sample_rate: 0
[ 48.193134] i2c i2c-0: lirc_dev: driver lirc_zilog registered at minor = 0
[ 48.193137] lirc_zilog: IR unit on Hauppage HD PVR I2C (i2c-0)
registered as lirc0 and ready
[ 48.193139] lirc_zilog: probe of IR Tx on Hauppage HD PVR I2C (i2c-0) done
[ 48.193161] lirc_zilog: initialization complete

Running (Still an issue)
-----------------------------------
Light testing seemed good, but the hd-pvr stil locked up after a few
channel changes with back-to-back recoding scheduled. Infact, it looks
like it was throwing errors much of the the time, I just didn't
notice.

kern.log
======================================

Apr 15 20:35:45 tvServer kernel: [ 179.299956] lirc_zilog:
Zilog/Hauppauge IR blaster firmware version 2.1.0 loaded
Apr 15 20:35:45 tvServer kernel: [ 179.565700] lirc_zilog:
i2c_master_recv failed with -5 -- keeping last read buffer
Apr 15 20:35:45 tvServer kernel: [ 179.578544] lirc_zilog:
i2c_master_recv failed with -5 -- keeping last read buffer
Apr 15 20:35:46 tvServer kernel: [ 180.485824] lirc_zilog:
i2c_master_recv failed with -5 -- keeping last read buffer
Apr 15 20:35:46 tvServer kernel: [ 180.498767] lirc_zilog:
i2c_master_recv failed with -5 -- keeping last read buffer

[snip] <- Stated getting zero byte recordings at midnight.

Apr 16 00:04:05 tvServer kernel: [12679.629307] lirc_zilog:
i2c_master_recv failed with -110 -- keeping last read buffer
Apr 16 00:04:07 tvServer kernel: [12680.889321] lirc_zilog:
i2c_master_send failed with -110
Apr 16 00:04:07 tvServer kernel: [12680.889326] lirc_zilog: polling
the IR receiver chip failed, trying reset
Apr 16 00:04:08 tvServer kernel: [12681.989332] lirc_zilog:
i2c_master_send failed with -110
Apr 16 00:04:08 tvServer kernel: [12681.989338] lirc_zilog: polling
the IR receiver chip failed, trying reset
Apr 16 00:04:09 tvServer kernel: [12683.089181] lirc_zilog:
i2c_master_send failed with -110

mythbackend.log
======================================
2011-04-10 11:59:20.402 AnalogSM(/dev/video0), Error: Start encoding failed
eno: Resource temporarily unavailable (11)
2011-04-10 11:59:20.751 AnalogSM(/dev/video0), Error: Start encoding failed
eno: Resource temporarily unavailable (11)

ghormann [at] tvServe:/var/log$ lsusb
======================================
Bus 002 Device 005: ID 2040:4903 Hauppauge

ghormann [at] tvServe:/var/log$ grep -i firmware kern.log | tail
======================================
Apr 15 20:33:31 tvServer kernel: [ 12.928818] hdpvr 2-1.3:1.0:
firmware version 0x15 dated Jun 17 2010 09:26:53
Apr 15 20:35:45 tvServer kernel: [ 179.299956] lirc_zilog:
Zilog/Hauppauge IR blaster firmware version 2.1.0 loaded
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ghormann at alumni

Apr 16, 2011, 6:43 AM

Post #16 of 26 (4259 views)
Permalink

Re: LIRC and MythBuntu 10.10 [In reply to]

On Fri, Apr 15, 2011 at 1:47 PM, Jarod Wilson <jarod [at] wilsonet> wrote:
> Well, if its *just* a small patch for lirc_serial, it might have a
> better shot than the much more involved imon fixes I asked them to
> take in. Then again, Ubuntu 11.04 ought to be released Real Soon
> Now, and should have a fully functional lirc_serial. Or not. It
> looks like that fix went in post-2.6.37, and 11.04 is shipping with
> a 2.6.37.x-based kernel. So it would seem a 2.6.37.x stable tree
> backport of that patch is probably in order. Sigh. I think there
> are probably a few others I should send to the 37 stable tree to
> head off another 6 months of already-fixed IR issue reports from
> Ubuntu users...
>

I also tried the latest lirc_serial.ko via media build. Found another
"common" error. Googling doesn't provide a solution that appears to
work for my situation. There are some new messages in dmesg, but I
thought they might just be debugging code.

ghormann [at] tvServe:/usr/local/bin$ sudo ./change_sa_chan.sh 123
irsend: command failed: SEND_ONCE SA4250 1
irsend: hardware does not support sending
irsend: command failed: SEND_ONCE SA4250 2
irsend: hardware does not support sending
irsend: command failed: SEND_ONCE SA4250 3

lircd-0.8.7-pre3[2546]: lircd(default) ready, using /var/run/lirc/lircd
lircd-0.8.7-pre3[2546]: accepted new client on /var/run/lirc/lircd
lircd-0.8.7-pre3[2546]: error processing command: SEND_ONCE SA4250 1
lircd-0.8.7-pre3[2546]: hardware does not support sending
lircd-0.8.7-pre3[2546]: removed client
lircd-0.8.7-pre3[2546]: accepted new client on /var/run/lirc/lircd
lircd-0.8.7-pre3[2546]: error processing command: SEND_ONCE SA4250 2
lircd-0.8.7-pre3[2546]: hardware does not support sending
lircd-0.8.7-pre3[2546]: removed client

ghormann [at] tvServe:/usr/local/bin$ ls -ld /dev/lirc*
crw-rw-rw- 1 root root 249, 0 2011-04-16 09:13 /dev/lirc0
lrwxrwxrwx 1 root root 19 2011-04-16 09:13 /dev/lircd -> /var/run/lirc/lircd
ghormann [at] tvServe:/usr/local/bin$ ls -ld /var/run/lirc/lircd*
srw-rw-rw- 1 root root 0 2011-04-16 09:13 /var/run/lirc/lircd
-rw-r--r-- 1 root root 5 2011-04-16 09:13 /var/run/lirc/lircd.pid

ghormann [at] tvServe:/usr/local/bin$ irsend list "" ""
irsend: Scientific_Altana_Explorer_8300_HD
irsend: SA4250
irsend: grayHauppauge
irsend: SAE8000

# /etc/lirc/hardware.conf
#
#Chosen Remote Control
REMOTE="None"
REMOTE_MODULES=""
REMOTE_DRIVER=""
REMOTE_DEVICE=""
REMOTE_SOCKET=""
REMOTE_LIRCD_CONF=""
REMOTE_LIRCD_ARGS=""

##Chosen IR Transmitter
#TRANSMITTER="None"
#TRANSMITTER_MODULES=""
#TRANSMITTER_DRIVER=""
#TRANSMITTER_DEVICE=""
#TRANSMITTER_SOCKET=""
#TRANSMITTER_LIRCD_CONF=""
#TRANSMITTER_LIRCD_ARGS=""

#Chosen IR Transmitter
TRANSMITTER="Serial Port (UART) : Scientific Atlanta Cable box"
TRANSMITTER_MODULES="lirc_dev lirc_serial"
TRANSMITTER_DRIVER=""
TRANSMITTER_DEVICE="/dev/lirc0"
TRANSMITTER_SOCKET=""
TRANSMITTER_LIRCD_CONF="/etc/lirc/lircd.conf.blaster"
#TRANSMITTER_LIRCD_CONF="scientificatlanta/general.conf"
TRANSMITTER_LIRCD_ARGS=""

#Enable lircd
START_LIRCD="true"

#Don't start lircmd even if there seems to be a good config file
#START_LIRCMD="false"

#Try to load appropriate kernel modules
LOAD_MODULES="true"

# Default configuration files for your hardware if any
LIRCMD_CONF=""

#Forcing noninteractive reconfiguration
#If lirc is to be reconfigured by an external application
#that doesn't have a debconf frontend available, the noninteractive
#frontend can be invoked and set to parse REMOTE and TRANSMITTER
#It will then populate all other variables without any user input
#If you would like to configure lirc via standard methods, be sure
#to leave this set to "false"
FORCE_NONINTERACTIVE_RECONFIGURATION="false"
START_LIRCMD=""

ghormann [at] tvServe:/usr/local/bin$ dmesg | grep lirc | tail -20
[ 1417.848386] lirc_serial lirc_serial.0: lirc_dev (lirc_serial[0]): poll called
[ 1417.848388] lirc_serial lirc_serial.0: lirc_dev (lirc_serial[0]):
poll result = 0
[ 1417.848422] lirc_serial lirc_serial.0: lirc_dev (lirc_serial[0]): poll called
[ 1417.848424] lirc_serial lirc_serial.0: lirc_dev (lirc_serial[0]):
poll result = 0
[ 1417.848429] lirc_serial lirc_serial.0: lirc_dev (lirc_serial[0]): poll called
[ 1417.848432] lirc_serial lirc_serial.0: lirc_dev (lirc_serial[0]):
poll result = 0
[ 1417.848437] lirc_serial lirc_serial.0: lirc_dev (lirc_serial[0]): poll called
[ 1417.848439] lirc_serial lirc_serial.0: lirc_dev (lirc_serial[0]):
poll result = 0
[ 1417.848444] lirc_serial lirc_serial.0: lirc_dev (lirc_serial[0]): poll called
[ 1417.848447] lirc_serial lirc_serial.0: lirc_dev (lirc_serial[0]):
poll result = 0
[ 1417.848452] lirc_serial lirc_serial.0: lirc_dev (lirc_serial[0]): poll called
[ 1417.848454] lirc_serial lirc_serial.0: lirc_dev (lirc_serial[0]):
poll result = 0
[ 1417.848459] lirc_serial lirc_serial.0: lirc_dev (lirc_serial[0]): poll called
[ 1417.848461] lirc_serial lirc_serial.0: lirc_dev (lirc_serial[0]):
poll result = 0
[ 1417.848467] lirc_serial lirc_serial.0: lirc_dev (lirc_serial[0]): poll called
[ 1417.848469] lirc_serial lirc_serial.0: lirc_dev (lirc_serial[0]):
poll result = 0
[ 1417.848549] lirc_serial lirc_serial.0: lirc_dev (lirc_serial[0]): poll called
[ 1417.848552] lirc_serial lirc_serial.0: lirc_dev (lirc_serial[0]):
poll result = 0
[ 1417.848576] lirc_serial lirc_serial.0: lirc_dev (lirc_serial[0]): poll called
[ 1417.848579] lirc_serial lirc_serial.0: lirc_dev (lirc_serial[0]):
poll result = 0
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dlinvill at networksdown

Apr 16, 2011, 8:35 AM

Post #17 of 26 (4206 views)
Permalink

Re: LIRC and MythBuntu 10.10 [In reply to]

On Sat, Apr 16, 2011 at 6:31 AM, Greg Hormann
<ghormann [at] alumni>wrote:

> Apr 15 20:35:45 tvServer kernel: [ 179.299956] lirc_zilog:
> Zilog/Hauppauge IR blaster firmware version 2.1.0 loaded
> Apr 15 20:35:45 tvServer kernel: [ 179.565700] lirc_zilog:
> i2c_master_recv failed with -5 -- keeping last read buffer
> Apr 15 20:35:45 tvServer kernel: [ 179.578544] lirc_zilog:
> i2c_master_recv failed with -5 -- keeping last read buffer
> Apr 15 20:35:46 tvServer kernel: [ 180.485824] lirc_zilog:
> i2c_master_recv failed with -5 -- keeping last read buffer
> Apr 15 20:35:46 tvServer kernel: [ 180.498767] lirc_zilog:
> i2c_master_recv failed with -5 -- keeping last read buffer
>
> [snip] <- Stated getting zero byte recordings at midnight.
>
> Apr 16 00:04:05 tvServer kernel: [12679.629307] lirc_zilog:
> i2c_master_recv failed with -110 -- keeping last read buffer
> Apr 16 00:04:07 tvServer kernel: [12680.889321] lirc_zilog:
> i2c_master_send failed with -110
> Apr 16 00:04:07 tvServer kernel: [12680.889326] lirc_zilog: polling
> the IR receiver chip failed, trying reset
> Apr 16 00:04:08 tvServer kernel: [12681.989332] lirc_zilog:
> i2c_master_send failed with -110
> Apr 16 00:04:08 tvServer kernel: [12681.989338] lirc_zilog: polling
> the IR receiver chip failed, trying reset
> Apr 16 00:04:09 tvServer kernel: [12683.089181] lirc_zilog:
> i2c_master_send failed with -110
>
> mythbackend.log
> ======================================
> 2011-04-10 11:59:20.402 AnalogSM(/dev/video0), Error: Start encoding failed
> eno: Resource temporarily unavailable (11)
> 2011-04-10 11:59:20.751 AnalogSM(/dev/video0), Error: Start encoding failed
> eno: Resource temporarily unavailable (11)
>
>
I avoided these errors and the failed recordings by adding the following
parameter to the lirc_zilog module. This worked since I was only using the
hd-pvr to send IR to the cable box.

options lirc_zilog tx_only=1

I've been running this way for over a month with no errors in the logs and
no failures in channel changes or recordings.

jarod at wilsonet

Apr 16, 2011, 11:00 AM

Post #18 of 26 (4188 views)
Permalink

Re: LIRC and MythBuntu 10.10 [In reply to]

On Apr 15, 2011, at 11:01 PM, f-myth-users [at] media wrote:

>> Date: Fri, 15 Apr 2011 13:47:16 -0400
>> From: Jarod Wilson <jarod [at] wilsonet>
>
>> looks like that fix went in post-2.6.37, and 11.04 is shipping with
>> a 2.6.37.x-based kernel.
>
> No it's not. Current 11.04 is already 2.6.38-8, which I'm running on
> an experimental basis on a test machine here.

Ah, so it is. Good. So the state of IR should actually be pretty sane
for the next 6 months.

> http://kernel.ubuntu.com/~kernel-ppa/info/kernel-version-map.html

Its a travesty that something like that is required to figure out what
upstream kernel a given ubuntu kernel is actually based on...

--
Jarod Wilson
jarod [at] wilsonet

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jarod at wilsonet

Apr 16, 2011, 11:04 AM

Post #19 of 26 (4203 views)
Permalink

Re: LIRC and MythBuntu 10.10 [In reply to]

On Apr 16, 2011, at 9:43 AM, Greg Hormann wrote:

> On Fri, Apr 15, 2011 at 1:47 PM, Jarod Wilson <jarod [at] wilsonet> wrote:
>> Well, if its *just* a small patch for lirc_serial, it might have a
>> better shot than the much more involved imon fixes I asked them to
>> take in. Then again, Ubuntu 11.04 ought to be released Real Soon
>> Now, and should have a fully functional lirc_serial. Or not. It
>> looks like that fix went in post-2.6.37, and 11.04 is shipping with
>> a 2.6.37.x-based kernel. So it would seem a 2.6.37.x stable tree
>> backport of that patch is probably in order. Sigh. I think there
>> are probably a few others I should send to the 37 stable tree to
>> head off another 6 months of already-fixed IR issue reports from
>> Ubuntu users...
>>
>
> I also tried the latest lirc_serial.ko via media build. Found another
> "common" error. Googling doesn't provide a solution that appears to
> work for my situation. There are some new messages in dmesg, but I
> thought they might just be debugging code.
>
> ghormann [at] tvServe:/usr/local/bin$ sudo ./change_sa_chan.sh 123
> irsend: command failed: SEND_ONCE SA4250 1
> irsend: hardware does not support sending
> irsend: command failed: SEND_ONCE SA4250 2
> irsend: hardware does not support sending
> irsend: command failed: SEND_ONCE SA4250 3

If you enabled it building the same way you did lirc_zilog, but didn't
add CONFIG_LIRC_SERIAL_TRANSMITTER=y, then you probably only built it
with RX support.

I forgot to mention that if you want to build the lirc staging bits, you
need to do a 'make stagingconfig' in the root of the media_build source,
which should have taken care of that automatically, I think. However, I
don't know why we don't just always build in TX support, I should remove
that config option...

--
Jarod Wilson
jarod [at] wilsonet

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ghormann at alumni

Apr 16, 2011, 11:39 AM

Post #20 of 26 (4191 views)
Permalink

Re: LIRC and MythBuntu 10.10 [In reply to]

On Sat, Apr 16, 2011 at 2:04 PM, Jarod Wilson <jarod [at] wilsonet> wrote:
> If you enabled it building the same way you did lirc_zilog, but didn't
> add CONFIG_LIRC_SERIAL_TRANSMITTER=y, then you probably only built it
> with RX support.
>
> I forgot to mention that if you want to build the lirc staging bits, you
> need to do a 'make stagingconfig' in the root of the media_build source,
> which should have taken care of that automatically, I think. However, I
> don't know why we don't just always build in TX support, I should remove
> that config option...
>

Actually I did both (with =m) to the .config file That should work
right? I *did not* run stagingconfig
ghormann [at] tvServe:~/mythtv_source/hd-pvr-driver/v4l-dvb-backport/media_build/v4l$
grep SERIAL .config
CONFIG_LIRC_SERIAL_TRANSMITTER=m
CONFIG_LIRC_SERIAL=m

I'm running a test right now with options lirc_zilog tx_only=1 as
David suggested. No problems after 4 shows being required (even
switching between resolutions). That is the most stable hd-pvr has
ever been as a transmission device. I also just started playing with
an MCE Remote. Hopefully I can get that stable too. (Right now, it
seems to be configured as a keyboard by some other module, instead of
via LIRC. Time for more google searches!)

Thanks again for all the assistance!

Greg.
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mythtv at rtr

Apr 16, 2011, 1:08 PM

Post #21 of 26 (4182 views)
Permalink

Re: LIRC and MythBuntu 10.10 [In reply to]

On 11-04-16 02:00 PM, Jarod Wilson wrote:
> On Apr 15, 2011, at 11:01 PM, f-myth-users [at] media wrote:
>
>>> Date: Fri, 15 Apr 2011 13:47:16 -0400
>>> From: Jarod Wilson <jarod [at] wilsonet>
>>
>>> looks like that fix went in post-2.6.37, and 11.04 is shipping with
>>> a 2.6.37.x-based kernel.
>>
>> No it's not. Current 11.04 is already 2.6.38-8, which I'm running on
>> an experimental basis on a test machine here.
>
> Ah, so it is. Good. So the state of IR should actually be pretty sane
> for the next 6 months.
>
>> http://kernel.ubuntu.com/~kernel-ppa/info/kernel-version-map.html
>
> Its a travesty that something like that is required to figure out what
> upstream kernel a given ubuntu kernel is actually based on...

Actually, as far as mainstream distros go, that's pretty good.
Just try figuring out a Redhat kernel.. sure there's a major
version number (like 2.6.32), but the subsystems inside could be
from completely different major versions. And then there's all
of those patches mashed together into a single source blob..

Cheers
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f-myth-users at media

Apr 16, 2011, 2:55 PM

Post #22 of 26 (4177 views)
Permalink

LIRC and MythBuntu 10.10 [In reply to]

> Date: Sat, 16 Apr 2011 14:00:19 -0400
> From: Jarod Wilson <jarod [at] wilsonet>

> > http://kernel.ubuntu.com/~kernel-ppa/info/kernel-version-map.html

> Its a travesty that something like that is required to figure out what
> upstream kernel a given ubuntu kernel is actually based on...

Don't look at me, man.

(I presume they don't want to call it the same thing, since they make
their own mods, but I also presume they have a reason for not just
appending "-ubuntuN" to it or something. How does RH do it?)
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mlists at dressler

Apr 17, 2011, 5:55 AM

Post #23 of 26 (4171 views)
Permalink

Re: LIRC and MythBuntu 10.10 [In reply to]

On 04/16/2011 02:39 PM, Greg Hormann wrote:
> On Sat, Apr 16, 2011 at 2:04 PM, Jarod Wilson<jarod [at] wilsonet> wrote:
>> If you enabled it building the same way you did lirc_zilog, but didn't
>> add CONFIG_LIRC_SERIAL_TRANSMITTER=y, then you probably only built it
>> with RX support.
>>
>> I forgot to mention that if you want to build the lirc staging bits, you
>> need to do a 'make stagingconfig' in the root of the media_build source,
>> which should have taken care of that automatically, I think. However, I
>> don't know why we don't just always build in TX support, I should remove
>> that config option...
>>
> Actually I did both (with =m) to the .config file That should work
> right? I *did not* run stagingconfig
> ghormann [at] tvServe:~/mythtv_source/hd-pvr-driver/v4l-dvb-backport/media_build/v4l$
> grep SERIAL .config
> CONFIG_LIRC_SERIAL_TRANSMITTER=m
> CONFIG_LIRC_SERIAL=m
>
> I'm running a test right now with options lirc_zilog tx_only=1 as
> David suggested. No problems after 4 shows being required (even
> switching between resolutions). That is the most stable hd-pvr has
> ever been as a transmission device. I also just started playing with
> an MCE Remote. Hopefully I can get that stable too. (Right now, it
> seems to be configured as a keyboard by some other module, instead of
> via LIRC. Time for more google searches!)
>
> Thanks again for all the assistance!

Well, I didn't run make stagingconfig either and that actually resolved
my issue with the lirc_serial module and 2.6.38 kernel on Ubuntu 10.10.

Norm
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ghormann at alumni

Apr 17, 2011, 3:55 PM

Post #24 of 26 (4158 views)
Permalink

Re: LIRC and MythBuntu 10.10 [In reply to]

On Sat, Apr 16, 2011 at 11:35 AM, David Linville
<dlinvill [at] networksdown> wrote:
> I avoided these errors and the failed recordings by adding the following
> parameter to the lirc_zilog module.� This worked since I was only using the
> hd-pvr to send IR to the cable box.
>
> options lirc_zilog tx_only=1
>
Thanks to Jarod, David, Mark and others. My system seems stable now
using an HD-PVR (with blaster) and a MCE remote. (I never got back to
testing the serial fix, and since it is "working" I'm not going to
mess with it.) I've attempted to contribute some of my learnings back
to the MythTV wiki.

Greg.
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jarod at wilsonet

Apr 18, 2011, 6:59 AM

Post #25 of 26 (4144 views)
Permalink

Re: LIRC and MythBuntu 10.10 [In reply to]

On Apr 16, 2011, at 4:08 PM, Mark Lord wrote:

> On 11-04-16 02:00 PM, Jarod Wilson wrote:
>> On Apr 15, 2011, at 11:01 PM, f-myth-users [at] media wrote:
>>
>>>> Date: Fri, 15 Apr 2011 13:47:16 -0400
>>>> From: Jarod Wilson <jarod [at] wilsonet>
>>>
>>>> looks like that fix went in post-2.6.37, and 11.04 is shipping with
>>>> a 2.6.37.x-based kernel.
>>>
>>> No it's not. Current 11.04 is already 2.6.38-8, which I'm running on
>>> an experimental basis on a test machine here.
>>
>> Ah, so it is. Good. So the state of IR should actually be pretty sane
>> for the next 6 months.
>>
>>> http://kernel.ubuntu.com/~kernel-ppa/info/kernel-version-map.html
>>
>> Its a travesty that something like that is required to figure out what
>> upstream kernel a given ubuntu kernel is actually based on...
>
> Actually, as far as mainstream distros go, that's pretty good.

No, actually, its not. :)

> Just try figuring out a Redhat kernel.. sure there's a major
> version number (like 2.6.32), but the subsystems inside could be
> from completely different major versions. And then there's all
> of those patches mashed together into a single source blob..

The Red Hat Enterprise Linux 6 kernel *is* in fact based upon an
upstream 2.6.32 kernel. But there are thousands of patches on top
of that. And a 10-year life cycle with a stable kernel ABI promise.
Features get backported from newer kernels. Entire subsystems get
updated. But its never claimed that its anything close to being an
upstream kernel. Its a very different situation from a rolling
release community distribution. Try looking at Fedora instead. :)

Current latest built Fedora 13 kernel:
kernel-2.6.34.8-68.fc13 ==> upstream 2.6.34.8 kernel

Current latest build Fedora 14 kernel:
kernel-2.6.35.12-88.fc14 ==> upstream 2.6.35.12 kernel

Current latest built Fedora 15 kernel:
kernel-2.6.38.3-16.fc15 ==> upstream 2.6.38.3 kernel

Where it gets more interesting, current rawhide kernel:
kernel-2.6.39-0.rc3.git2.0.fc16 ==> upstream 2.6.39-rc3-git2 kernel

>From either package name or uname -r output alone, you can tell
exactly what upstream kernel, including git and rc snapshot kernels,
the Fedora kernel is based upon. No lookup table required. Its been
that way since mid-2007 and kernel 2.6.22.

--
Jarod Wilson
jarod [at] wilsonet

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