Login | Register For Free | Help
Search for: (Advanced)

Mailing List Archive: MythTV: Mythtvnz

Channel change stability issues with MythTV and VDPAU in NZ

  

 
MythTV mythtvnz RSS feed   Index | Next | Previous | View Threaded


steven at openmedia

May 31, 2009, 8:26 PM

Post #1 of 23 (3886 views)
Permalink
Channel change stability issues with MythTV and VDPAU in NZ
I've finally got a debug dumps from a recent Jean-Yves MythTV build
that shows the two issues I'm regularly seeing with VDPAU playback of
freeview|HD here in NZ.

1. MythTV frontend exits during a channel change

Test environment
* Ubuntu 8.10 32bit
* NVidia VDPAU 185.19
* mythtv - 1:0.21.0+fixes-20550-openglvdpau-debug-0ubuntu2

You can find the debug files here

http://www.mythtv.co.nz/shared/vdpau/channel_crash/gdb.txt
http://www.mythtv.co.nz/shared/vdpau/channel_crash/myth.log

To produce the problem I select a freeview|HD only channel, and then
change between random channels reasonably quickly until the frontend
exits, or I hit my other issue shown below.



2. Live TV exits with the message "Error was encountered while
displaying video", but the frontend doesn't crash.

Test environment
* Ubuntu 8.10 32bit
* NVidia VDPAU 185.18.14
* mythtv - 1:0.21.0+fixes-20649-openglvdpau-debug-0ubuntu2

http://www.mythtv.co.nz/shared/vdpau/channel_error/gdb.txt
http://www.mythtv.co.nz/shared/vdpau/channel_error/myth.log

For this problem the gdb.txt is probably less useful as it was
generated while the error message was on screen.


I've also reproduced both of these problems under Ububtu 9.04 32bit,
but I wasn't running a debug enabled build at the time



I have a feeling that both of these issues are down to error handling
when the reception picks up a set of bad frames that the H.264 decoder
struggles to handle.

Jean-Yves - I'd really appreciate your input and guidance on these
problems.

Steve




Steven Ellis - Technical Director
OpenMedia Limited
email - steven [at] openmedia
website - http://www.openmedia.co.nz


steven at openmedia

May 31, 2009, 9:30 PM

Post #2 of 23 (3785 views)
Permalink
Re: Channel change stability issues with MythTV and VDPAU in NZ [In reply to]
On 1/06/2009, at 3:26 PM, Steven Ellis wrote:

> I've finally got a debug dumps from a recent Jean-Yves MythTV build
> that shows the two issues I'm regularly seeing with VDPAU playback
> of freeview|HD here in NZ.
>
> 1. MythTV frontend exits during a channel change
>
> Test environment
> * Ubuntu 8.10 32bit
> * NVidia VDPAU 185.19
> * mythtv - 1:0.21.0+fixes-20550-openglvdpau-debug-0ubuntu2
>
> You can find the debug files here
>
> http://www.mythtv.co.nz/shared/vdpau/channel_crash/gdb.txt
> http://www.mythtv.co.nz/shared/vdpau/channel_crash/myth.log
>
> To produce the problem I select a freeview|HD only channel, and then
> change between random channels reasonably quickly until the frontend
> exits, or I hit my other issue shown below.
>

I've now reproduced the frontend crash problem with an updated build

Test environment
* Ubuntu 8.10 32bit
* NVidia VDPAU 185.18.14
* mythtv - 1:0.21.0+fixes-20649-openglvdpau-debug-0ubuntu2

Files here
http://www.mythtv.co.nz/shared/vdpau/channel_crash2/gdb.txt
http://www.mythtv.co.nz/shared/vdpau/channel_crash2/myth.log

Steve

Steven Ellis - Technical Director
OpenMedia Limited
email - steven [at] openmedia
website - http://www.openmedia.co.nz


olivuts at yahoo

May 31, 2009, 10:10 PM

Post #3 of 23 (3793 views)
Permalink
Re: Channel change stability issues with MythTV and VDPAU in NZ [In reply to]
Hi Steve,

I want to see if I can replicate this issue with my system.. Just to keep the variables similar - when you change channels do you wait for the new channel to show before selecting another channel or do you just keep pushing channel number buttons until the frontend exits.

Cheers

Steve




________________________________
From: Steven Ellis <steven [at] openmedia>
To: MythTV in NZ <mythtvnz [at] lists>
Sent: Monday, 1 June, 2009 4:30:59 PM
Subject: Re: [mythtvnz] Channel change stability issues with MythTV and VDPAU in NZ



On 1/06/2009, at 3:26 PM, Steven Ellis wrote:

I've finally got a debug dumps from a recent Jean-Yves MythTV build that shows the two issues I'm regularly seeing with VDPAU playback of freeview|HD here in NZ.

1. MythTV frontend exits during a channel change

Test environment
    * Ubuntu 8.10 32bit
    * NVidia VDPAU 185.19
    * mythtv - 1:0.21.0+fixes-20550-openglvdpau-debug-0ubuntu2 

You can find the debug files here

http://www.mythtv.co.nz/shared/vdpau/channel_crash/gdb.txt
http://www.mythtv.co.nz/shared/vdpau/channel_crash/myth.log

To produce the problem I select a freeview|HD only channel, and then change between random channels reasonably quickly until the frontend exits, or I hit my other issue shown below.


I've now reproduced the frontend crash problem with an updated build

Test environment
    * Ubuntu 8.10 32bit
    * NVidia VDPAU 185.18.14
    * mythtv - 1:0.21.0+fixes-20649-openglvdpau-debug-0ubuntu2

Files here
  http://www.mythtv.co.nz/shared/vdpau/channel_crash2/gdb.txt
  http://www.mythtv.co.nz/shared/vdpau/channel_crash2/myth.log

Steve

Steven Ellis - Technical Director
OpenMedia Limited
email   - steven [at] openmedia
website - http://www.openmedia.co.nz


steven at openmedia

May 31, 2009, 10:25 PM

Post #4 of 23 (3805 views)
Permalink
Re: Channel change stability issues with MythTV and VDPAU in NZ [In reply to]
On 1/06/2009, at 5:10 PM, Steve V wrote:

> Hi Steve,
>
> I want to see if I can replicate this issue with my system. Just to
> keep the variables similar - when you change channels do you wait
> for the new channel to show before selecting another channel or do
> you just keep pushing channel number buttons until the frontend exits.

For this issue I've been waiting for the channel to display and then
quickly switching to a different channel.

It appears that Jean thinks the issue may reside in the version of
ffmpeg that 0.21-fixes is based on.

Steve


>
> Cheers
>
> Steve
>
> From: Steven Ellis <steven [at] openmedia>
> To: MythTV in NZ <mythtvnz [at] lists>
> Sent: Monday, 1 June, 2009 4:30:59 PM
> Subject: Re: [mythtvnz] Channel change stability issues with MythTV
> and VDPAU in NZ
>
>
> On 1/06/2009, at 3:26 PM, Steven Ellis wrote:
>
>> I've finally got a debug dumps from a recent Jean-Yves MythTV build
>> that shows the two issues I'm regularly seeing with VDPAU playback
>> of freeview|HD here in NZ.
>>
>> 1. MythTV frontend exits during a channel change
>>
>> Test environment
>> * Ubuntu 8.10 32bit
>> * NVidia VDPAU 185.19
>> * mythtv - 1:0.21.0+fixes-20550-openglvdpau-debug-0ubuntu2
>>
>> You can find the debug files here
>>
>> MailScanner has detected a possible fraud attempt from "www.mythtv.co.nz
>> " claiming to behttp://www.mythtv.co..nz/shared/vdpau/channel_crash/
>> gdb.txt
>> http://www.mythtv.co.nz/shared/vdpau/channel_crash/myth.log
>>
>> To produce the problem I select a freeview|HD only channel, and
>> then change between random channels reasonably quickly until the
>> frontend exits, or I hit my other issue shown below.
>>
>
> I've now reproduced the frontend crash problem with an updated build
>
> Test environment
> * Ubuntu 8.10 32bit
> * NVidia VDPAU 185.18.14
> * mythtv - 1:0.21.0+fixes-20649-openglvdpau-debug-0ubuntu2
>
> Files here
> http://www.mythtv.co.nz/shared/vdpau/channel_crash2/gdb.txt
> http://www.mythtv.co.nz/shared/vdpau/channel_crash2/myth.log
>
> Steve
>
> Steven Ellis - Technical Director
> OpenMedia Limited
> email - steven [at] openmedia
> website - http://www.openmedia.co.nz
>
>
> Email slow, clunky, unreliable? Switch to Yahoo!Xtra Mail, New
> Zealand's new email
> address._______________________________________________
> mythtvnz mailing list
> mythtvnz [at] lists
> http://lists.ourshack.com/mailman/listinfo/mythtvnz
> Archives http://www.gossamer-threads.com/lists/mythtv/mythtvnz/

Steven Ellis - Technical Director
OpenMedia Limited
email - steven [at] openmedia
website - http://www.openmedia.co.nz


jyavenard at gmail

May 31, 2009, 10:49 PM

Post #5 of 23 (3789 views)
Permalink
Re: Channel change stability issues with MythTV and VDPAU in NZ [In reply to]
Hi

2009/6/1 Steven Ellis <steven [at] openmedia>:
> It appears that Jean thinks the issue may reside in the version of ffmpeg
> that 0.21-fixes is based on.
> Steve

It doesn't "appear" :)

It crashed there:
#0 0xb7047cc5 in decode_slice_header (h=0xa396d600, h0=0xa396d600) at
h264.c:3834

There you find:
h->prev_frame_num++;
h->prev_frame_num %= 1<<h->sps.log2_max_frame_num;
s->current_picture_ptr->frame_num= h->prev_frame_num;
<---- crash here
execute_ref_pic_marking(h, NULL, 0);

the crash occurs because is s->current_picture_ptr is NULL ... This
should never happened ...

Looking at the more recent ffmpeg, even if that code there has been
removed, it still assumes later than s->current_picture_ptr is
defined. So I'm guessing the crash you produced would have happened as
well, just not in the same area of the code.

JY

_______________________________________________
mythtvnz mailing list
mythtvnz [at] lists
http://lists.ourshack.com/mailman/listinfo/mythtvnz
Archives http://www.gossamer-threads.com/lists/mythtv/mythtvnz/


steven at openmedia

May 31, 2009, 11:59 PM

Post #6 of 23 (3794 views)
Permalink
Re: Channel change stability issues with MythTV and VDPAU in NZ [In reply to]
On 1/06/2009, at 5:49 PM, Jean-Yves Avenard wrote:

> Hi
>
> 2009/6/1 Steven Ellis <steven [at] openmedia>:
>> It appears that Jean thinks the issue may reside in the version of
>> ffmpeg
>> that 0.21-fixes is based on.
>> Steve
>
> It doesn't "appear" :)
>
> It crashed there:
> #0 0xb7047cc5 in decode_slice_header (h=0xa396d600, h0=0xa396d600) at
> h264.c:3834
>
> There you find:
> h->prev_frame_num++;
> h->prev_frame_num %= 1<<h->sps.log2_max_frame_num;
> s->current_picture_ptr->frame_num= h->prev_frame_num;
> <---- crash here
> execute_ref_pic_marking(h, NULL, 0);
>
> the crash occurs because is s->current_picture_ptr is NULL ... This
> should never happened ...
>
> Looking at the more recent ffmpeg, even if that code there has been
> removed, it still assumes later than s->current_picture_ptr is
> defined. So I'm guessing the crash you produced would have happened as
> well, just not in the same area of the code.


Thanks for clarifying that. So any thoughts on why this value is NULL?

Steve


Steven Ellis - Technical Director
OpenMedia Limited
email - steven [at] openmedia
website - http://www.openmedia.co.nz


jyavenard at gmail

Jun 7, 2009, 12:56 AM

Post #7 of 23 (3713 views)
Permalink
Re: Channel change stability issues with MythTV and VDPAU in NZ [In reply to]
Hi

2009/6/7 Steven Ellis <steven [at] openmedia>:
> I still get the occasional "Error was encountered" while changing channels,
> but I haven't had a crash yet..

I think I've identified what the problem could be.

Haven't looked in that code there, but from some error messages I saw,
I wouldn't be surprised if that was the reason.

So, a mythfrontend tries to watch LiveTV
mythbackend kicks the capture card and start a recording
mythfrontend now waits for that recording to be available for a set
period of time
once the recording has buffered enough and is available, mythfrontend
starts playback

Now when you change channel quickly: it goes on like this:
mythfrontend tries to watch LiveTV
mythbackend kicks the capture card and start a recording
mythfrontend now waits for that recording to be available for a set
period of time
mythfrontend change channel
wait time above lapsed start to try watching the new recordings which
doesn't exist yet: failure

When changing channel very fast, a few times I saw in the log that
buffering time had lapsed and then an error that a given recording
didn't exist.

As the mythtv developers do not use LiveTV, I'm guessing they never
really looked at this issue.

Jean-Yves

_______________________________________________
mythtvnz mailing list
mythtvnz [at] lists
http://lists.ourshack.com/mailman/listinfo/mythtvnz
Archives http://www.gossamer-threads.com/lists/mythtv/mythtvnz/


steven at openmedia

Jun 7, 2009, 4:18 AM

Post #8 of 23 (3720 views)
Permalink
Re: Channel change stability issues with MythTV and VDPAU in NZ [In reply to]
On 7/06/2009, at 7:56 PM, Jean-Yves Avenard wrote:

> Hi
>
> 2009/6/7 Steven Ellis <steven [at] openmedia>:
>> I still get the occasional "Error was encountered" while changing
>> channels,
>> but I haven't had a crash yet..
>
> I think I've identified what the problem could be.
>
> Haven't looked in that code there, but from some error messages I saw,
> I wouldn't be surprised if that was the reason.
>
> So, a mythfrontend tries to watch LiveTV
> mythbackend kicks the capture card and start a recording
> mythfrontend now waits for that recording to be available for a set
> period of time
> once the recording has buffered enough and is available, mythfrontend
> starts playback
>
> Now when you change channel quickly: it goes on like this:
> mythfrontend tries to watch LiveTV
> mythbackend kicks the capture card and start a recording
> mythfrontend now waits for that recording to be available for a set
> period of time
> mythfrontend change channel
> wait time above lapsed start to try watching the new recordings which
> doesn't exist yet: failure
>
> When changing channel very fast, a few times I saw in the log that
> buffering time had lapsed and then an error that a given recording
> didn't exist.
>
> As the mythtv developers do not use LiveTV, I'm guessing they never
> really looked at this issue.
>

I'll reply on list this time..

You have described the extreme case which I usually include in my
stress tests, but at the moment I'm doing the following.

1. Start Live TV

2. Make sure I'm on a freeview|HD only channel - I have freeview's SD
DTH service and their DTT freeview|HD service on the same box.

3. Wait for video playback

4. Change to another channel - could be HD or SD

5. Goto 3

So on every channel change I wait, sometimes upto 10 seconds, for the
video playback to start.

Steve



Steven Ellis - Technical Director
OpenMedia Limited
email - steven [at] openmedia
website - http://www.openmedia.co.nz


olivuts at yahoo

Jun 7, 2009, 1:04 PM

Post #9 of 23 (3705 views)
Permalink
Re: Channel change stability issues with MythTV and VDPAU in NZ [In reply to]
________________________________
From: Steven Ellis <steven [at] openmedia>
To: MythTV in NZ <mythtvnz [at] lists>
Sent: Sunday, 7 June, 2009 11:18:05 PM
Subject: Re: [mythtvnz] Channel change stability issues with MythTV and VDPAU in NZ



On 7/06/2009, at 7:56 PM, Jean-Yves Avenard wrote:

Hi

2009/6/7 Steven Ellis <steven [at] openmedia>:

I still get the occasional "Error was encountered" while changing channels,

but I haven't had a crash yet..

I think I've identified what the problem could be.

Haven't looked in that code there, but from some error messages I saw,
I wouldn't be surprised if that was the reason.

So, a mythfrontend tries to watch LiveTV
mythbackend kicks the capture card and start a recording
mythfrontend now waits for that recording to be available for a set
period of time
once the recording has buffered enough and is available, mythfrontend
starts playback

Now when you change channel quickly: it goes on like this:
mythfrontend tries to watch LiveTV
mythbackend kicks the capture card and start a recording
mythfrontend now waits for that recording to be available for a set
period of time
mythfrontend change channel
wait time above lapsed start to try watching the new recordings which
doesn't exist yet: failure

When changing channel very fast, a few times I saw in the log that
buffering time had lapsed and then an error that a given recording
didn't exist.

As the mythtv developers do not use LiveTV, I'm guessing they never
really looked at this issue.



I'll reply on list this time..

You have described the extreme case which I usually include in my stress tests, but at the moment I'm doing the following.

1. Start Live TV

2. Make sure I'm on a freeview|HD only channel - I have freeview's SD DTH service and their DTT freeview|HD service on the same box.

3. Wait for video playback

4. Change to another channel - could be HD or SD

5. Goto 3

So on every channel change I wait, sometimes upto 10 seconds, for the video playback to start.

Steve



Steven Ellis - Technical Director
OpenMedia Limited
email   - steven [at] openmedia
website - http://www.openmedia.co.nz

I tried this the other day. I hadn't posted my results because I was going to put together a list of hardware and software for comparison. I only have Freevoew HD via a Nova - T dual tuner.

Anyway, I did exactly as you above, I managed to change channels 20 times without any problems. I didn't see any need to keep trying.

let me know if you would like me to post my hardware and software setup.

Cheers
Steve  





_______________________________________________
mythtvnz mailing list
mythtvnz [at] lists
http://lists.ourshack.com/mailman/listinfo/mythtvnz
Archives http://www.gossamer-threads.com/lists/mythtv/mythtvnz/


Aaron.Drysdale at provencocadmus

Jun 7, 2009, 4:58 PM

Post #10 of 23 (3703 views)
Permalink
Re: Channel change stability issues with MythTV andVDPAU in NZ [In reply to]
This problem started for me about a week ago, and it is so bad that I
have stopped using my dvb-t card for watching live tv and only use
dvb-s. However, I still use the Nova-T 500 for recording shows. Prior to
this, I had almost never seen this error.

Early last week I upgraded my box to use JYA's latest version from his
release repository. A few days before that, I had installed 185.18.14
nvidia driver as well.

I did have some problems with the install of myth. I had recently
installed monit to monitor my myth backend. During the upgrade, it
failed with an exit status of 127 on the backend. I assumed that this
was because monit had restarted the service during the install. So I
stopped monit, reinstalled, and it worked without a problem.

However, after the upgrade I found I couldn't watch live tv. 8 times out
of 10, it was failing to even go into live tv with the "Encountered a
problem displaying video" message. However I am not getting this problem
with SD. When I do get into live tv on HD, then it usually fails the
first time I try to change the channel.

I have also seen it suddenly come up with this message while I am just
watching live tv and haven't touched the remote, and live tv has been
playing for 20 minutes or more.

I have restarted the machine, and also done a complete power down to
start the card from a cold state. It has made no difference.

So, I have gone back to using the dvb-s card for live tv by switching
the order of the dvb cards in the backend. For the last several days I
have only been using the dvb-s card for watching live tv and browsing,
and haven't seen a problem. I'm not sure if this is related to a problem
in the latest version or whether the failure during the install could
have corrupted my install in some way.

I would happily provide a log if someone could tell me what log is
required, and whether I need to enable any extra logging.

Aaron

_______________________________________________
mythtvnz mailing list
mythtvnz [at] lists
http://lists.ourshack.com/mailman/listinfo/mythtvnz
Archives http://www.gossamer-threads.com/lists/mythtv/mythtvnz/


ross.jemima at gmail

Jun 8, 2009, 2:59 AM

Post #11 of 23 (3692 views)
Permalink
Re: Channel change stability issues with MythTV andVDPAU in NZ [In reply to]
Hey guys,

Not sure if its related but I'm having some stability issues on my
system. I sometimes get "Encountered a problem displaying video" errors
both when watching recordings and when watching live TV. I've noticed
it happens when a recording starts (ie playback of live TV or recording
exits).

Channel change can take up to 2 - 5 seconds to change but I thought this
was normal. It may be that I need to improve the signal strength.

But my biggest problem now is that the card seems to fall over pretty
regularly. This is noted by the fact that the remote stops working
along with Live TV. This can happen anywhere between a few seconds
after start up and hours later. The syslog begins to fill up with
entries like:

Jun 8 20:01:26 mythserver kernel: [ 1453.468507] mt2060 I2C read failed
Jun 8 20:01:27 mythserver kernel: [ 1454.616051] mt2060 I2C write
failed (len=2)
Jun 8 20:01:27 mythserver kernel: [ 1454.616055] mt2060 I2C write
failed (len=6)
Jun 8 20:01:27 mythserver kernel: [ 1454.616058] mt2060 I2C read failed

From what I can google it seems like this problem was supposed to have
been solved by recent driver updates. Looks like I am using the
dvb-usb-dib0700-1.20.fw as it is not symlinked to 1.10.

System:
Nvidia 180.60 VDPAU (JYA release repo)
Hauppauge Win Nova T 500
Ubuntu 9.04

_______________________________________________
mythtvnz mailing list
mythtvnz [at] lists
http://lists.ourshack.com/mailman/listinfo/mythtvnz
Archives http://www.gossamer-threads.com/lists/mythtv/mythtvnz/


jyavenard at gmail

Jun 8, 2009, 6:35 PM

Post #12 of 23 (3677 views)
Permalink
Re: Channel change stability issues with MythTV andVDPAU in NZ [In reply to]
Hi

2009/6/9 Steven Ellis <steven [at] openmedia>:
>
> Looks like from a posting on NVidia's forum that a fix might be in the works
>
> - http://www.nvnews.net/vbulletin/showpost.php?p=2024986&postcount=510

This is not the issue you were seeing ...

There are times mythtv crash doing a X redraw ... that's what Mark
Kendall is talking about there.

_______________________________________________
mythtvnz mailing list
mythtvnz [at] lists
http://lists.ourshack.com/mailman/listinfo/mythtvnz
Archives http://www.gossamer-threads.com/lists/mythtv/mythtvnz/


steven at openmedia

Jun 8, 2009, 6:36 PM

Post #13 of 23 (3677 views)
Permalink
Re: Channel change stability issues with MythTV andVDPAU in NZ [In reply to]
Looks like from a posting on NVidia's forum that a fix might be in the works

- http://www.nvnews.net/vbulletin/showpost.php?p=2024986&postcount=510


--------------------------------------------
Steven Ellis - Technical Director
OpenMedia Limited - The Home of myPVR
email - steven [at] openmedia
website - http://www.openmedia.co.nz

_______________________________________________
mythtvnz mailing list
mythtvnz [at] lists
http://lists.ourshack.com/mailman/listinfo/mythtvnz
Archives http://www.gossamer-threads.com/lists/mythtv/mythtvnz/


ross.jemima at gmail

Jun 12, 2009, 5:47 PM

Post #14 of 23 (3567 views)
Permalink
Re: Channel change stability issues with MythTV andVDPAU in NZ [In reply to]
Hi Aaron,

Did you ever get this sorted? I am having the same issues.

System breakdown:

Ubuntu 9.04 AMD-64
JYA's Jaunty release repository only (no testing or bleeding)
nvidia-glx-185 - version 185.18.14-0ubuntu3
nvidia-185-libvdpau - version 185.18.14-0ubuntu3
Hauppauge Nova-T 500 hardware

If I click mark all upgrades in synaptic I get the following:
http://my.jetscreenshot.com/412/20090612-vef7-41kb

Update Manager keeps offering upgrades but says it can only perform a
partial upgrade:
http://my.jetscreenshot.com/412/20090612-yvoh-97kb

So it looks like synaptic is wanting to update everything including what
update manager isn't willing to (libmyth and mplayer) but its trying to
revert the vdpau and nvidia driver to version 180! Looking in Synaptic
it wants to convert from version
1:0.21.0+fixes-20674-openglvdpau-0ubuntu0 to
1:0.21.0+fixes-20674-openglvdpau-0ubuntu3 for each of the changes.

Here is the list of changes (note click the zoom link on the page to
make it legible):
http://my.jetscreenshot.com/412/20090612-ls1f-168kb

I'd like to stay using v185 of the nvidia driver but if the version of
myth in JYAs release repository is not compatible with this driver
should I switch to using the testing repository?


Ross
PS hope the links to images work, a picture is worth a thousand words


Aaron Drysdale wrote:
> This problem started for me about a week ago, and it is so bad that I
> have stopped using my dvb-t card for watching live tv and only use
> dvb-s. However, I still use the Nova-T 500 for recording shows. Prior to
> this, I had almost never seen this error.
>
> Early last week I upgraded my box to use JYA's latest version from his
> release repository. A few days before that, I had installed 185.18.14
> nvidia driver as well.
>
> I did have some problems with the install of myth. I had recently
> installed monit to monitor my myth backend. During the upgrade, it
> failed with an exit status of 127 on the backend. I assumed that this
> was because monit had restarted the service during the install. So I
> stopped monit, reinstalled, and it worked without a problem.
>
> However, after the upgrade I found I couldn't watch live tv. 8 times out
> of 10, it was failing to even go into live tv with the "Encountered a
> problem displaying video" message. However I am not getting this problem
> with SD. When I do get into live tv on HD, then it usually fails the
> first time I try to change the channel.
>
> I have also seen it suddenly come up with this message while I am just
> watching live tv and haven't touched the remote, and live tv has been
> playing for 20 minutes or more.
>
> I have restarted the machine, and also done a complete power down to
> start the card from a cold state. It has made no difference.
>
> So, I have gone back to using the dvb-s card for live tv by switching
> the order of the dvb cards in the backend. For the last several days I
> have only been using the dvb-s card for watching live tv and browsing,
> and haven't seen a problem. I'm not sure if this is related to a problem
> in the latest version or whether the failure during the install could
> have corrupted my install in some way.
>
> I would happily provide a log if someone could tell me what log is
> required, and whether I need to enable any extra logging.
>
> Aaron
>
> _______________________________________________
> mythtvnz mailing list
> mythtvnz [at] lists
> http://lists.ourshack.com/mailman/listinfo/mythtvnz
> Archives http://www.gossamer-threads.com/lists/mythtv/mythtvnz/
>

_______________________________________________
mythtvnz mailing list
mythtvnz [at] lists
http://lists.ourshack.com/mailman/listinfo/mythtvnz
Archives http://www.gossamer-threads.com/lists/mythtv/mythtvnz/


jyavenard at gmail

Jun 12, 2009, 11:02 PM

Post #15 of 23 (3551 views)
Permalink
Re: Channel change stability issues with MythTV andVDPAU in NZ [In reply to]
Hi

2009/6/13 Ross and Jemima Knudsen <ross.jemima [at] gmail>:
> If I click mark all upgrades in synaptic I get the following:
> http://my.jetscreenshot.com/412/20090612-vef7-41kb
>
> Update Manager keeps offering upgrades but says it can only perform a
> partial upgrade:
> http://my.jetscreenshot.com/412/20090612-yvoh-97kb
>
> So it looks like synaptic is wanting to update everything including what
> update manager isn't willing to (libmyth and mplayer) but its trying to
> revert the vdpau and nvidia driver to version 180!  Looking in Synaptic
> it wants to convert from version
> 1:0.21.0+fixes-20674-openglvdpau-0ubuntu0 to
> 1:0.21.0+fixes-20674-openglvdpau-0ubuntu3 for each of the changes.
>
> Here is the list of changes (note click the zoom link on the page to
> make it legible):
> http://my.jetscreenshot.com/412/20090612-ls1f-168kb
>
> I'd like to stay using v185 of the nvidia driver but if the version of
> myth in JYAs release repository is not compatible with this driver
> should I switch to using the testing repository?
>

185.x has been very unstable for me and others ; my machine keeps freezing.

so I put back 180.x in the release directory ; you'll have to follow
those instructions
http://www.avenard.org/media/Ubuntu_Repository/Entries/2009/6/10_How_to_downgrade_to_nVidia_drivers_180.xx.html

It's very simple. Same procedure as upgrading from 180.x to 185.x..

If you use testing, you'll find the same packages but build for 185.xx

Jean-Yves

_______________________________________________
mythtvnz mailing list
mythtvnz [at] lists
http://lists.ourshack.com/mailman/listinfo/mythtvnz
Archives http://www.gossamer-threads.com/lists/mythtv/mythtvnz/


ross.jemima at gmail

Jun 14, 2009, 1:56 AM

Post #16 of 23 (3514 views)
Permalink
Re: Channel change stability issues with MythTV andVDPAU in NZ [In reply to]
185.x has been very unstable for me and others ; my machine keeps freezing.
> so I put back 180.x in the release directory ; you'll have to follow
> those instructions
> http://www.avenard.org/media/Ubuntu_Repository/Entries/2009/6/10_How_to_downgrade_to_nVidia_drivers_180.xx.html
>
> It's very simple. Same procedure as upgrading from 180.x to 185.x..
>
> If you use testing, you'll find the same packages but build for 185.xx
>
> Jean-Yves
>
>
>
Bummer. I thought that the playback was improved using this driver on
my machine, probably with the fixes to the powermizer. I've reverted
though and will wait for a more stable version.

I think someone noted that the stability of the Nova T 500 card was good
in Ubuntu 8.10 (which was my experience) but now seems to be having some
issues. In what packages are the drivers etc for this card or is there
a way to see if anything has changed with the upgrade to Jaunty? Is
there an easy way to revert to Intrepid to see if the problem goes away?

_______________________________________________
mythtvnz mailing list
mythtvnz [at] lists
http://lists.ourshack.com/mailman/listinfo/mythtvnz
Archives http://www.gossamer-threads.com/lists/mythtv/mythtvnz/


jonathan.hoskin at gmail

Jun 14, 2009, 1:52 PM

Post #17 of 23 (3498 views)
Permalink
Re: Channel change stability issues with MythTV andVDPAU in NZ [In reply to]
> I think someone noted that the stability of the Nova T 500 card was good
> in Ubuntu 8.10 (which was my experience) but now seems to be having some
> issues. In what packages are the drivers etc for this card or is there
> a way to see if anything has changed with the upgrade to Jaunty? Is
> there an easy way to revert to Intrepid to see if the problem goes away?
>

Seems our offshore friends are having similar issues in 9.04:
http://www.gossamer-threads.com/lists/mythtv/users/384799


nick.rout at gmail

Jun 14, 2009, 1:59 PM

Post #18 of 23 (3506 views)
Permalink
Re: Channel change stability issues with MythTV andVDPAU in NZ [In reply to]
On Mon, Jun 15, 2009 at 8:52 AM, Jonathan
Hoskin<jonathan.hoskin [at] gmail> wrote:
>
>> I think someone noted that the stability of the Nova T 500 card was good
>> in Ubuntu 8.10 (which was my experience) but now seems to be having some
>> issues.  In what packages are the drivers etc for this card or is there
>> a way to see if anything has changed with the upgrade to Jaunty?  Is
>> there an easy way to revert to Intrepid to see if the problem goes away?
>
> Seems our offshore friends are having similar issues in 9.04:
> http://www.gossamer-threads.com/lists/mythtv/users/384799

reading the mythbuntu forums (as I occasionally do) revelas a lot of
problems with 9.04, particualarly upgrades from previous versions.

I will be avoiding it and may try a move to LinHES (formerly knoppmyth).

_______________________________________________
mythtvnz mailing list
mythtvnz [at] lists
http://lists.ourshack.com/mailman/listinfo/mythtvnz
Archives http://www.gossamer-threads.com/lists/mythtv/mythtvnz/


hads at nice

Jun 14, 2009, 2:09 PM

Post #19 of 23 (3512 views)
Permalink
Re: Channel change stability issues with MythTV andVDPAU in NZ [In reply to]
On Mon, 2009-06-15 at 08:59 +1200, Nick Rout wrote:
> reading the mythbuntu forums (as I occasionally do) revelas a lot of
> problems with 9.04, particualarly upgrades from previous versions.

FWIW I upgraded our main backend to it a couple of weeks ago and haven't
had any issues.

hads
--
http://nicegear.co.nz
New Zealand's Open Source Hardware Supplier


_______________________________________________
mythtvnz mailing list
mythtvnz [at] lists
http://lists.ourshack.com/mailman/listinfo/mythtvnz
Archives http://www.gossamer-threads.com/lists/mythtv/mythtvnz/


nick.rout at gmail

Jun 14, 2009, 2:43 PM

Post #20 of 23 (3499 views)
Permalink
Re: Channel change stability issues with MythTV andVDPAU in NZ [In reply to]
On Mon, Jun 15, 2009 at 9:09 AM, Hadley Rich<hads [at] nice> wrote:
> On Mon, 2009-06-15 at 08:59 +1200, Nick Rout wrote:
>> reading the mythbuntu forums (as I occasionally do) revelas a lot of
>> problems with 9.04, particualarly upgrades from previous versions.
>
> FWIW I upgraded our main backend to it a couple of weeks ago and haven't
> had any issues.

Seems to be mainly FE problems, and very hit and miss at that.

_______________________________________________
mythtvnz mailing list
mythtvnz [at] lists
http://lists.ourshack.com/mailman/listinfo/mythtvnz
Archives http://www.gossamer-threads.com/lists/mythtv/mythtvnz/


Aaron.Drysdale at provencocadmus

Jun 14, 2009, 5:24 PM

Post #21 of 23 (3497 views)
Permalink
Re: Channel change stability issues with MythTV andVDPAU in NZ [In reply to]
>Bummer. I thought that the playback was improved using this driver on
>my machine, probably with the fixes to the powermizer. I've reverted
>though and will wait for a more stable version.

I checked JYA's site and noticed his comment about downgrading to
180.60, and given the problems I've been having with my HD tuner the
last few weeks I decided to do the same. However, after downgrading I
found a lot of problems with playback on TV3, which is normally rock
solid for me. So, back to 185.x and the modules out of Jean-Yves test
repository.

I've found that provided I watch live TV off the satellite, and use the
HD tuner just for recording, the system works very well. The problems I
have all seem to be related to channel changing on HD. Ie, the channel
changing is so slow, it appears to timeout and comes up with the
"Encountered problem displaying video" message.

Aaron

_______________________________________________
mythtvnz mailing list
mythtvnz [at] lists
http://lists.ourshack.com/mailman/listinfo/mythtvnz
Archives http://www.gossamer-threads.com/lists/mythtv/mythtvnz/


ross.jemima at gmail

Jun 15, 2009, 1:00 AM

Post #22 of 23 (3488 views)
Permalink
Re: Channel change stability issues with MythTV andVDPAU in NZ [In reply to]
Jonathan Hoskin wrote:
>
> Seems our offshore friends are having similar issues in 9.04:
> http://www.gossamer-threads.com/lists/mythtv/users/384799
>
Well I'm glad that its not just me then! Interesting it claims that
reverting to 1.10 firmware fixed it for one person. I did try that but
I don't think I powered right down as I didn't know it made a
difference. Might give it a go when I get a chance. You would think if
they had changed the driver they would iterate the version number rather
than leave everyone scratching their heads...


Nick Rout wrote:

reading the mythbuntu forums (as I occasionally do) revelas a lot of
problems with 9.04, particualarly upgrades from previous versions.

I will be avoiding it and may try a move to LinHES (formerly knoppmyth).



Interesting. Hopefully they can fix things in 9.10 as I quite like
Ubuntu and have got a lot of things the way I like them now.

Nick Rout wrote:
Seems to be mainly FE problems, and very hit and miss at that.

Yeah I think thats the case too. I did an experiment last night. I
can't watch live TV at all now so I went in and set a currently showing
program to record, went back into the recordings menu and started
watching it with no problems even though it was recording and playing
back at the same time. I don't think the card has fallen over and
stopped working for a few days now. I was getting problems where
overnight it wouldn't record a show it was supposed to. I'm guessing it
was because the card was functioning correctly. The recording was
listed in the recordings menu but it complained that the file couldn't
be found. It may come back to the coding issues JYA pointed out earlier.

Aaron Drysdale wrote:

I checked JYA's site and noticed his comment about downgrading to
180.60, and given the problems I've been having with my HD tuner the
last few weeks I decided to do the same. However, after downgrading I
found a lot of problems with playback on TV3, which is normally rock
solid for me. So, back to 185.x and the modules out of Jean-Yves test
repository.

I reverted as per JYAs instructions and didn't have any issues. You
might need to check some of your settings which may have been lost?...

_______________________________________________
mythtvnz mailing list
mythtvnz [at] lists
http://lists.ourshack.com/mailman/listinfo/mythtvnz
Archives http://www.gossamer-threads.com/lists/mythtv/mythtvnz/


Douglas.Pearless at pearless

Jun 22, 2009, 3:27 AM

Post #23 of 23 (3284 views)
Permalink
Re: Channel change stability issues with MythTV andVDPAU in NZ [In reply to]
I went through the downgrade procedure and now a number of recordings
just have black screens, bother.

I will need to go back to 185.18.14...

Cheers
Douglas
Jean-Yves Avenard wrote:
> Hi
>
> 2009/6/13 Ross and Jemima Knudsen <ross.jemima [at] gmail>:
>
>> If I click mark all upgrades in synaptic I get the following:
>> http://my.jetscreenshot.com/412/20090612-vef7-41kb
>>
>> Update Manager keeps offering upgrades but says it can only perform a
>> partial upgrade:
>> http://my.jetscreenshot.com/412/20090612-yvoh-97kb
>>
>> So it looks like synaptic is wanting to update everything including what
>> update manager isn't willing to (libmyth and mplayer) but its trying to
>> revert the vdpau and nvidia driver to version 180! Looking in Synaptic
>> it wants to convert from version
>> 1:0.21.0+fixes-20674-openglvdpau-0ubuntu0 to
>> 1:0.21.0+fixes-20674-openglvdpau-0ubuntu3 for each of the changes.
>>
>> Here is the list of changes (note click the zoom link on the page to
>> make it legible):
>> http://my.jetscreenshot.com/412/20090612-ls1f-168kb
>>
>> I'd like to stay using v185 of the nvidia driver but if the version of
>> myth in JYAs release repository is not compatible with this driver
>> should I switch to using the testing repository?
>>
>>
>
> 185.x has been very unstable for me and others ; my machine keeps freezing.
>
> so I put back 180.x in the release directory ; you'll have to follow
> those instructions
> http://www.avenard.org/media/Ubuntu_Repository/Entries/2009/6/10_How_to_downgrade_to_nVidia_drivers_180.xx.html
>
> It's very simple. Same procedure as upgrading from 180.x to 185.x..
>
> If you use testing, you'll find the same packages but build for 185.xx
>
> Jean-Yves
>
> _______________________________________________
> mythtvnz mailing list
> mythtvnz [at] lists
> http://lists.ourshack.com/mailman/listinfo/mythtvnz
> Archives http://www.gossamer-threads.com/lists/mythtv/mythtvnz/
>

MythTV mythtvnz RSS feed   Index | Next | Previous | View Threaded
 
 


Interested in having your list archived? Contact Gossamer Threads
 
  Web Applications & Managed Hosting Powered by Gossamer Threads Inc.