Mailing List Archive: ivtv: devel

X working on PVR-350 but MPEG decoder doesn't

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nicolas.mainil at gmail

Jan 17, 2005, 9:21 AM

Post #1 of 18 (5394 views)
Permalink

X working on PVR-350 but MPEG decoder doesn't

Hi,

I want to use the PVR-350 output for mythtv. I managed to get X
working on the PVR-350 (with the latest ivtvdev v0.8 driver) anr
recording works very well but the decoder doesn't work or sometimes at
really really poor framerate.
When I do :
cat /dev/video0 > tmp.mpg
followed by
dd if=tmp.mpg of=/dev/video16 bs=64k
I get really poor framerate ( near 1 frame/sec )
and when I do :
dd if=/dev/video0 of=/dev/video16 bs=64k
after variable time dmesg is full filled with this message until I stop dd :
...
ivtv ENC IRQ OVERFLOW STEALING A BUFFER 1024 CURRENTLY ALLOCATED
...

I tried a lot of kernel configs, numerous ivtv versions, some bios
settings changes but nothing made the decoder working. Currently I
work with :
Gentoo Linux 2.6.10-r4 with udev
bttv-0.9.15
ivtv-0.3.2b
on an Asus Pundit
with 512 MB ram, Celeron 2GHz and a PVR-350 (model 992)

Does someone have the same problem or know what this error means and
maybe how to solve it ? I'd really appreciate too if people having
success with the PVR-350 output on a similar setup than mine could
send me (off list to avoid flooding the mailing-list) the config files
they used to get it working.

Thanks, Nicolas

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sschaefer1 at woh

Jan 17, 2005, 10:26 AM

Post #2 of 18 (5264 views)
Permalink

Re: X working on PVR-350 but MPEG decoder doesn't [In reply to]

Are you saying that you are attempting to playback a recording from a command line while X is running on the PVR 350's framebuffer tv out port?

----- Original Message -----
From: Nicolas Mainil <nicolas.mainil [at] gmail>
Date: Monday, January 17, 2005 11:21 am
Subject: [ivtv-devel] X working on PVR-350 but MPEG decoder doesn't

> Hi,
>
> I want to use the PVR-350 output for mythtv. I managed to get X
> working on the PVR-350 (with the latest ivtvdev v0.8 driver) anr
> recording works very well but the decoder doesn't work or
> sometimes at
> really really poor framerate.
> When I do :
> cat /dev/video0 > tmp.mpg
> followed by
> dd if=tmp.mpg of=/dev/video16 bs=64k
> I get really poor framerate ( near 1 frame/sec )
> and when I do :
> dd if=/dev/video0 of=/dev/video16 bs=64k
> after variable time dmesg is full filled with this message until I
> stop dd :
> ...
> ivtv ENC IRQ OVERFLOW STEALING A BUFFER 1024 CURRENTLY ALLOCATED
> ...
>
> I tried a lot of kernel configs, numerous ivtv versions, some bios
> settings changes but nothing made the decoder working. Currently I
> work with :
> Gentoo Linux 2.6.10-r4 with udev
> bttv-0.9.15
> ivtv-0.3.2b
> on an Asus Pundit
> with 512 MB ram, Celeron 2GHz and a PVR-350 (model 992)
>
> Does someone have the same problem or know what this error means and
> maybe how to solve it ? I'd really appreciate too if people having
> success with the PVR-350 output on a similar setup than mine could
> send me (off list to avoid flooding the mailing-list) the config files
> they used to get it working.
>
> Thanks, Nicolas
>
>
> -------------------------------------------------------
> The SF.Net email is sponsored by: Beat the post-holiday blues
> Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
> It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt
> _______________________________________________
> ivtv-devel mailing list
> ivtv-devel [at] lists
> https://lists.sourceforge.net/lists/listinfo/ivtv-devel
>

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nicolas.mainil at gmail

Jan 17, 2005, 10:40 AM

Post #3 of 18 (5249 views)
Permalink

Re: X working on PVR-350 but MPEG decoder doesn't [In reply to]

No, I've not been very clear. All the command lines were done while X
wasn't launched on the PVR-350, I did them for testing purposes. But
when starting X on the PVR-350 to use mythtv, the myth frontend is
properly displayed but when attempting to play livetv or a recording I
get no video or really really poor framerate ( I didn't forget to
check the box USE PVR-350 HARDWARE in the mythtv setup ).
So I think the problem is related to the decoder.

Nicolas

On Mon, 17 Jan 2005 12:26:06 -0500, sschaefer1 [at] woh
<sschaefer1 [at] woh> wrote:
> Are you saying that you are attempting to playback a recording from a command line while X is running on the PVR 350's framebuffer tv out port?
>
> ----- Original Message -----
> From: Nicolas Mainil <nicolas.mainil [at] gmail>
> Date: Monday, January 17, 2005 11:21 am
> Subject: [ivtv-devel] X working on PVR-350 but MPEG decoder doesn't
>
> > Hi,
> >
> > I want to use the PVR-350 output for mythtv. I managed to get X
> > working on the PVR-350 (with the latest ivtvdev v0.8 driver) anr
> > recording works very well but the decoder doesn't work or
> > sometimes at
> > really really poor framerate.
> > When I do :
> > cat /dev/video0 > tmp.mpg
> > followed by
> > dd if=tmp.mpg of=/dev/video16 bs=64k
> > I get really poor framerate ( near 1 frame/sec )
> > and when I do :
> > dd if=/dev/video0 of=/dev/video16 bs=64k
> > after variable time dmesg is full filled with this message until I
> > stop dd :
> > ...
> > ivtv ENC IRQ OVERFLOW STEALING A BUFFER 1024 CURRENTLY ALLOCATED
> > ...
> >
> > I tried a lot of kernel configs, numerous ivtv versions, some bios
> > settings changes but nothing made the decoder working. Currently I
> > work with :
> > Gentoo Linux 2.6.10-r4 with udev
> > bttv-0.9.15
> > ivtv-0.3.2b
> > on an Asus Pundit
> > with 512 MB ram, Celeron 2GHz and a PVR-350 (model 992)
> >
> > Does someone have the same problem or know what this error means and
> > maybe how to solve it ? I'd really appreciate too if people having
> > success with the PVR-350 output on a similar setup than mine could
> > send me (off list to avoid flooding the mailing-list) the config files
> > they used to get it working.
> >
> > Thanks, Nicolas
> >
> >
> > -------------------------------------------------------
> > The SF.Net email is sponsored by: Beat the post-holiday blues
> > Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
> > It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt
> > _______________________________________________
> > ivtv-devel mailing list
> > ivtv-devel [at] lists
> > https://lists.sourceforge.net/lists/listinfo/ivtv-devel
> >
>
> -------------------------------------------------------
> The SF.Net email is sponsored by: Beat the post-holiday blues
> Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
> It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt
> _______________________________________________
> ivtv-devel mailing list
> ivtv-devel [at] lists
> https://lists.sourceforge.net/lists/listinfo/ivtv-devel
>

-------------------------------------------------------
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Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
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_______________________________________________
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sschaefer1 at woh

Jan 17, 2005, 1:01 PM

Post #4 of 18 (5256 views)
Permalink

Re: X working on PVR-350 but MPEG decoder doesn't [In reply to]

I also noticed that you said you have a PVR-350 (model 992).
I think model 990 is the most common, have you done a search on the archive on "992" ??? Hopefully not, but it might be a compatibility problem. If it were I would imagine there is some mention of it in the archive. Sorry don't mean to scare you.

----- Original Message -----
From: Nicolas Mainil <nicolas.mainil [at] gmail>
Date: Monday, January 17, 2005 12:40 pm
Subject: Re: [ivtv-devel] X working on PVR-350 but MPEG decoder doesn't

> No, I've not been very clear. All the command lines were done
> while X
> wasn't launched on the PVR-350, I did them for testing purposes. But
> when starting X on the PVR-350 to use mythtv, the myth frontend is
> properly displayed but when attempting to play livetv or a
> recording I
> get no video or really really poor framerate ( I didn't forget to
> check the box USE PVR-350 HARDWARE in the mythtv setup ).
> So I think the problem is related to the decoder.
>
> Nicolas
>
>
> On Mon, 17 Jan 2005 12:26:06 -0500, sschaefer1 [at] woh
> <sschaefer1 [at] woh> wrote:
> > Are you saying that you are attempting to playback a recording
> from a command line while X is running on the PVR 350's
> framebuffer tv out port?
> >
> > ----- Original Message -----
> > From: Nicolas Mainil <nicolas.mainil [at] gmail>
> > Date: Monday, January 17, 2005 11:21 am
> > Subject: [ivtv-devel] X working on PVR-350 but MPEG decoder doesn't
> >
> > > Hi,
> > >
> > > I want to use the PVR-350 output for mythtv. I managed to get X
> > > working on the PVR-350 (with the latest ivtvdev v0.8 driver) anr
> > > recording works very well but the decoder doesn't work or
> > > sometimes at
> > > really really poor framerate.
> > > When I do :
> > > cat /dev/video0 > tmp.mpg
> > > followed by
> > > dd if=tmp.mpg of=/dev/video16 bs=64k
> > > I get really poor framerate ( near 1 frame/sec )
> > > and when I do :
> > > dd if=/dev/video0 of=/dev/video16 bs=64k
> > > after variable time dmesg is full filled with this message
> until I
> > > stop dd :
> > > ...
> > > ivtv ENC IRQ OVERFLOW STEALING A BUFFER 1024 CURRENTLY ALLOCATED
> > > ...
> > >
> > > I tried a lot of kernel configs, numerous ivtv versions, some bios
> > > settings changes but nothing made the decoder working.
> Currently I
> > > work with :
> > > Gentoo Linux 2.6.10-r4 with udev
> > > bttv-0.9.15
> > > ivtv-0.3.2b
> > > on an Asus Pundit
> > > with 512 MB ram, Celeron 2GHz and a PVR-350 (model 992)
> > >
> > > Does someone have the same problem or know what this error
> means and
> > > maybe how to solve it ? I'd really appreciate too if people having
> > > success with the PVR-350 output on a similar setup than mine could
> > > send me (off list to avoid flooding the mailing-list) the
> config files
> > > they used to get it working.
> > >
> > > Thanks, Nicolas
> > >
> > >
> > > -------------------------------------------------------
> > > The SF.Net email is sponsored by: Beat the post-holiday blues
> > > Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
> > > It's fun and FREE -- well,
> almost....http://www.thinkgeek.com/sfshirt> >
> _______________________________________________> > ivtv-devel
> mailing list
> > > ivtv-devel [at] lists
> > > https://lists.sourceforge.net/lists/listinfo/ivtv-devel
> > >
> >
> > -------------------------------------------------------
> > The SF.Net email is sponsored by: Beat the post-holiday blues
> > Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
> > It's fun and FREE -- well,
> almost....http://www.thinkgeek.com/sfshirt>
> _______________________________________________> ivtv-devel
> mailing list
> > ivtv-devel [at] lists
> > https://lists.sourceforge.net/lists/listinfo/ivtv-devel
> >
>
>
> -------------------------------------------------------
> The SF.Net email is sponsored by: Beat the post-holiday blues
> Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
> It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt
> _______________________________________________
> ivtv-devel mailing list
> ivtv-devel [at] lists
> https://lists.sourceforge.net/lists/listinfo/ivtv-devel
>

-------------------------------------------------------
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Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt
_______________________________________________
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https://lists.sourceforge.net/lists/listinfo/ivtv-devel

nicolas.mainil at gmail

Jan 17, 2005, 1:55 PM

Post #5 of 18 (5267 views)
Permalink

Re: X working on PVR-350 but MPEG decoder doesn't [In reply to]

You're right, there are a few posts reporting that tv-out doesn't work
on this model but when I bought this card I also found posts reporting
that this card didn't work at all so right now captures works like a
charm, X works like a charm, and ivtv-fb loads up without any problems
why not the decoder ?

sschaefer1 [at] woh wrote:

>I also noticed that you said you have a PVR-350 (model 992).
>I think model 990 is the most common, have you done a search on the archive on "992" ??? Hopefully not, but it might be a compatibility problem. If it were I would imagine there is some mention of it in the archive. Sorry don't mean to scare you.
>
>----- Original Message -----
>From: Nicolas Mainil <nicolas.mainil [at] gmail>
>Date: Monday, January 17, 2005 12:40 pm
>Subject: Re: [ivtv-devel] X working on PVR-350 but MPEG decoder doesn't
>
>
>
>>No, I've not been very clear. All the command lines were done
>>while X
>>wasn't launched on the PVR-350, I did them for testing purposes. But
>>when starting X on the PVR-350 to use mythtv, the myth frontend is
>>properly displayed but when attempting to play livetv or a
>>recording I
>>get no video or really really poor framerate ( I didn't forget to
>>check the box USE PVR-350 HARDWARE in the mythtv setup ).
>>So I think the problem is related to the decoder.
>>
>>Nicolas
>>
>>
>>On Mon, 17 Jan 2005 12:26:06 -0500, sschaefer1 [at] woh
>><sschaefer1 [at] woh> wrote:
>>
>>
>>>Are you saying that you are attempting to playback a recording
>>>
>>>
>>from a command line while X is running on the PVR 350's
>>framebuffer tv out port?
>>
>>
>>>----- Original Message -----
>>>From: Nicolas Mainil <nicolas.mainil [at] gmail>
>>>Date: Monday, January 17, 2005 11:21 am
>>>Subject: [ivtv-devel] X working on PVR-350 but MPEG decoder doesn't
>>>
>>>
>>>
>>>>Hi,
>>>>
>>>>I want to use the PVR-350 output for mythtv. I managed to get X
>>>>working on the PVR-350 (with the latest ivtvdev v0.8 driver) anr
>>>>recording works very well but the decoder doesn't work or
>>>>sometimes at
>>>>really really poor framerate.
>>>>When I do :
>>>>cat /dev/video0 > tmp.mpg
>>>>followed by
>>>>dd if=tmp.mpg of=/dev/video16 bs=64k
>>>>I get really poor framerate ( near 1 frame/sec )
>>>>and when I do :
>>>>dd if=/dev/video0 of=/dev/video16 bs=64k
>>>>after variable time dmesg is full filled with this message
>>>>
>>>>
>>until I
>>
>>
>>>>stop dd :
>>>>...
>>>>ivtv ENC IRQ OVERFLOW STEALING A BUFFER 1024 CURRENTLY ALLOCATED
>>>>...
>>>>
>>>>I tried a lot of kernel configs, numerous ivtv versions, some bios
>>>>settings changes but nothing made the decoder working.
>>>>
>>>>
>>Currently I
>>
>>
>>>>work with :
>>>>Gentoo Linux 2.6.10-r4 with udev
>>>>bttv-0.9.15
>>>>ivtv-0.3.2b
>>>>on an Asus Pundit
>>>>with 512 MB ram, Celeron 2GHz and a PVR-350 (model 992)
>>>>
>>>>Does someone have the same problem or know what this error
>>>>
>>>>
>>means and
>>
>>
>>>>maybe how to solve it ? I'd really appreciate too if people having
>>>>success with the PVR-350 output on a similar setup than mine could
>>>>send me (off list to avoid flooding the mailing-list) the
>>>>
>>>>
>>config files
>>
>>
>>>>they used to get it working.
>>>>
>>>>Thanks, Nicolas
>>>>
>>>>
>>>>-------------------------------------------------------
>>>>The SF.Net email is sponsored by: Beat the post-holiday blues
>>>>Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
>>>>It's fun and FREE -- well,
>>>>
>>>>
>>almost....http://www.thinkgeek.com/sfshirt> >
>>_______________________________________________> > ivtv-devel
>>mailing list
>>
>>
>>>>ivtv-devel [at] lists
>>>>https://lists.sourceforge.net/lists/listinfo/ivtv-devel
>>>>
>>>>
>>>>
>>>-------------------------------------------------------
>>>The SF.Net email is sponsored by: Beat the post-holiday blues
>>>Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
>>>It's fun and FREE -- well,
>>>
>>>
>>almost....http://www.thinkgeek.com/sfshirt>
>>_______________________________________________> ivtv-devel
>>mailing list
>>
>>
>>>ivtv-devel [at] lists
>>>https://lists.sourceforge.net/lists/listinfo/ivtv-devel
>>>
>>>
>>>
>>-------------------------------------------------------
>>The SF.Net email is sponsored by: Beat the post-holiday blues
>>Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
>>It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt
>>_______________________________________________
>>ivtv-devel mailing list
>>ivtv-devel [at] lists
>>https://lists.sourceforge.net/lists/listinfo/ivtv-devel
>>
>>
>>
>
>
>
>-------------------------------------------------------
>The SF.Net email is sponsored by: Beat the post-holiday blues
>Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
>It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt
>_______________________________________________
>ivtv-devel mailing list
>ivtv-devel [at] lists
>https://lists.sourceforge.net/lists/listinfo/ivtv-devel
>
>
>

-------------------------------------------------------
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Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
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_______________________________________________
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https://lists.sourceforge.net/lists/listinfo/ivtv-devel

nicolas.mainil at gmail

Jan 17, 2005, 1:55 PM

Post #6 of 18 (5230 views)
Permalink

Re: X working on PVR-350 but MPEG decoder doesn't [In reply to]

nicolas.mainil at gmail

Jan 17, 2005, 1:55 PM

Post #7 of 18 (5239 views)
Permalink

Re: X working on PVR-350 but MPEG decoder doesn't [In reply to]

nicolas.mainil at gmail

Jan 17, 2005, 1:56 PM

Post #8 of 18 (5229 views)
Permalink

Re: X working on PVR-350 but MPEG decoder doesn't [In reply to]

nicolas.mainil at gmail

Jan 17, 2005, 1:56 PM

Post #9 of 18 (5230 views)
Permalink

Re: X working on PVR-350 but MPEG decoder doesn't [In reply to]

john.p.harvey at btinternet

Jan 17, 2005, 2:53 PM

Post #10 of 18 (5229 views)
Permalink

RE: X working on PVR-350 but MPEG decoder doesn't [In reply to]

I guess the other thing is to make sure you aren't sharing the interrupt
with something else.

John

> -----Original Message-----
> From: ivtv-devel-admin [at] lists [mailto:ivtv-devel-
> admin [at] lists] On Behalf Of sschaefer1 [at] woh
> Sent: 17 January 2005 20:02
> To: ivtv-devel [at] lists
> Subject: Re: [ivtv-devel] X working on PVR-350 but MPEG decoder doesn't
>
> I also noticed that you said you have a PVR-350 (model 992).
> I think model 990 is the most common, have you done a search on the
> archive on "992" ??? Hopefully not, but it might be a compatibility
> problem. If it were I would imagine there is some mention of it in the
> archive. Sorry don't mean to scare you.
>
> ----- Original Message -----
> From: Nicolas Mainil <nicolas.mainil [at] gmail>
> Date: Monday, January 17, 2005 12:40 pm
> Subject: Re: [ivtv-devel] X working on PVR-350 but MPEG decoder doesn't
>
> > No, I've not been very clear. All the command lines were done
> > while X
> > wasn't launched on the PVR-350, I did them for testing purposes. But
> > when starting X on the PVR-350 to use mythtv, the myth frontend is
> > properly displayed but when attempting to play livetv or a
> > recording I
> > get no video or really really poor framerate ( I didn't forget to
> > check the box USE PVR-350 HARDWARE in the mythtv setup ).
> > So I think the problem is related to the decoder.
> >
> > Nicolas
> >
> >
> > On Mon, 17 Jan 2005 12:26:06 -0500, sschaefer1 [at] woh
> > <sschaefer1 [at] woh> wrote:
> > > Are you saying that you are attempting to playback a recording
> > from a command line while X is running on the PVR 350's
> > framebuffer tv out port?
> > >
> > > ----- Original Message -----
> > > From: Nicolas Mainil <nicolas.mainil [at] gmail>
> > > Date: Monday, January 17, 2005 11:21 am
> > > Subject: [ivtv-devel] X working on PVR-350 but MPEG decoder doesn't
> > >
> > > > Hi,
> > > >
> > > > I want to use the PVR-350 output for mythtv. I managed to get X
> > > > working on the PVR-350 (with the latest ivtvdev v0.8 driver) anr
> > > > recording works very well but the decoder doesn't work or
> > > > sometimes at
> > > > really really poor framerate.
> > > > When I do :
> > > > cat /dev/video0 > tmp.mpg
> > > > followed by
> > > > dd if=tmp.mpg of=/dev/video16 bs=64k
> > > > I get really poor framerate ( near 1 frame/sec )
> > > > and when I do :
> > > > dd if=/dev/video0 of=/dev/video16 bs=64k
> > > > after variable time dmesg is full filled with this message
> > until I
> > > > stop dd :
> > > > ...
> > > > ivtv ENC IRQ OVERFLOW STEALING A BUFFER 1024 CURRENTLY ALLOCATED
> > > > ...
> > > >
> > > > I tried a lot of kernel configs, numerous ivtv versions, some bios
> > > > settings changes but nothing made the decoder working.
> > Currently I
> > > > work with :
> > > > Gentoo Linux 2.6.10-r4 with udev
> > > > bttv-0.9.15
> > > > ivtv-0.3.2b
> > > > on an Asus Pundit
> > > > with 512 MB ram, Celeron 2GHz and a PVR-350 (model 992)
> > > >
> > > > Does someone have the same problem or know what this error
> > means and
> > > > maybe how to solve it ? I'd really appreciate too if people having
> > > > success with the PVR-350 output on a similar setup than mine could
> > > > send me (off list to avoid flooding the mailing-list) the
> > config files
> > > > they used to get it working.
> > > >
> > > > Thanks, Nicolas
> > > >
> > > >
> > > > -------------------------------------------------------
> > > > The SF.Net email is sponsored by: Beat the post-holiday blues
> > > > Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
> > > > It's fun and FREE -- well,
> > almost....http://www.thinkgeek.com/sfshirt> >
> > _______________________________________________> > ivtv-devel
> > mailing list
> > > > ivtv-devel [at] lists
> > > > https://lists.sourceforge.net/lists/listinfo/ivtv-devel
> > > >
> > >
> > > -------------------------------------------------------
> > > The SF.Net email is sponsored by: Beat the post-holiday blues
> > > Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
> > > It's fun and FREE -- well,
> > almost....http://www.thinkgeek.com/sfshirt>
> > _______________________________________________> ivtv-devel
> > mailing list
> > > ivtv-devel [at] lists
> > > https://lists.sourceforge.net/lists/listinfo/ivtv-devel
> > >
> >
> >
> > -------------------------------------------------------
> > The SF.Net email is sponsored by: Beat the post-holiday blues
> > Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
> > It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt
> > _______________________________________________
> > ivtv-devel mailing list
> > ivtv-devel [at] lists
> > https://lists.sourceforge.net/lists/listinfo/ivtv-devel
> >
>
>
>
> -------------------------------------------------------
> The SF.Net email is sponsored by: Beat the post-holiday blues
> Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
> It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt
> _______________________________________________
> ivtv-devel mailing list
> ivtv-devel [at] lists
> https://lists.sourceforge.net/lists/listinfo/ivtv-devel

-------------------------------------------------------
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Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt
_______________________________________________
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john.p.harvey at btinternet

Jan 17, 2005, 3:01 PM

Post #11 of 18 (5254 views)
Permalink

RE: X working on PVR-350 but MPEG decoder doesn't [In reply to]

This also feels like a scheduling problem. If this is happening then
presumably we are running out of buffers somewhere. The encoder is stealing
buffers so this means the app isn't taking them fast enough which maybe just
down to scheduling.
Also ivtv now has threads for handling a lot of this which possibly add more
complexity to the scheduling issues.

As far as I am aware there are about 3 scheduling policies available
(preempt, low latency and standard), but I haven't looked into this beyond a
1 minute look at the output of a google search.
It could be that changing the scheduling policy for your kernel could have
an effect on this.

Others on the list may have more insight but I am sure I've seen mutterings
in the hdtv mailings on myth-dev about disabling preempt fixing issues
there. So that might be worth looking into.

John

> -----Original Message-----
> From: ivtv-devel-admin [at] lists [mailto:ivtv-devel-
> admin [at] lists] On Behalf Of sschaefer1 [at] woh
> Sent: 17 January 2005 20:02
> To: ivtv-devel [at] lists
> Subject: Re: [ivtv-devel] X working on PVR-350 but MPEG decoder doesn't
>
> I also noticed that you said you have a PVR-350 (model 992).
> I think model 990 is the most common, have you done a search on the
> archive on "992" ??? Hopefully not, but it might be a compatibility
> problem. If it were I would imagine there is some mention of it in the
> archive. Sorry don't mean to scare you.
>
> ----- Original Message -----
> From: Nicolas Mainil <nicolas.mainil [at] gmail>
> Date: Monday, January 17, 2005 12:40 pm
> Subject: Re: [ivtv-devel] X working on PVR-350 but MPEG decoder doesn't
>
> > No, I've not been very clear. All the command lines were done
> > while X
> > wasn't launched on the PVR-350, I did them for testing purposes. But
> > when starting X on the PVR-350 to use mythtv, the myth frontend is
> > properly displayed but when attempting to play livetv or a
> > recording I
> > get no video or really really poor framerate ( I didn't forget to
> > check the box USE PVR-350 HARDWARE in the mythtv setup ).
> > So I think the problem is related to the decoder.
> >
> > Nicolas
> >
> >
> > On Mon, 17 Jan 2005 12:26:06 -0500, sschaefer1 [at] woh
> > <sschaefer1 [at] woh> wrote:
> > > Are you saying that you are attempting to playback a recording
> > from a command line while X is running on the PVR 350's
> > framebuffer tv out port?
> > >
> > > ----- Original Message -----
> > > From: Nicolas Mainil <nicolas.mainil [at] gmail>
> > > Date: Monday, January 17, 2005 11:21 am
> > > Subject: [ivtv-devel] X working on PVR-350 but MPEG decoder doesn't
> > >
> > > > Hi,
> > > >
> > > > I want to use the PVR-350 output for mythtv. I managed to get X
> > > > working on the PVR-350 (with the latest ivtvdev v0.8 driver) anr
> > > > recording works very well but the decoder doesn't work or
> > > > sometimes at
> > > > really really poor framerate.
> > > > When I do :
> > > > cat /dev/video0 > tmp.mpg
> > > > followed by
> > > > dd if=tmp.mpg of=/dev/video16 bs=64k
> > > > I get really poor framerate ( near 1 frame/sec )
> > > > and when I do :
> > > > dd if=/dev/video0 of=/dev/video16 bs=64k
> > > > after variable time dmesg is full filled with this message
> > until I
> > > > stop dd :
> > > > ...
> > > > ivtv ENC IRQ OVERFLOW STEALING A BUFFER 1024 CURRENTLY ALLOCATED
> > > > ...
> > > >
> > > > I tried a lot of kernel configs, numerous ivtv versions, some bios
> > > > settings changes but nothing made the decoder working.
> > Currently I
> > > > work with :
> > > > Gentoo Linux 2.6.10-r4 with udev
> > > > bttv-0.9.15
> > > > ivtv-0.3.2b
> > > > on an Asus Pundit
> > > > with 512 MB ram, Celeron 2GHz and a PVR-350 (model 992)
> > > >
> > > > Does someone have the same problem or know what this error
> > means and
> > > > maybe how to solve it ? I'd really appreciate too if people having
> > > > success with the PVR-350 output on a similar setup than mine could
> > > > send me (off list to avoid flooding the mailing-list) the
> > config files
> > > > they used to get it working.
> > > >
> > > > Thanks, Nicolas
> > > >
> > > >
> > > > -------------------------------------------------------
> > > > The SF.Net email is sponsored by: Beat the post-holiday blues
> > > > Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
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> > almost....http://www.thinkgeek.com/sfshirt> >
> > _______________________________________________> > ivtv-devel
> > mailing list
> > > > ivtv-devel [at] lists
> > > > https://lists.sourceforge.net/lists/listinfo/ivtv-devel
> > > >
> > >
> > > -------------------------------------------------------
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> > > Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
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> > _______________________________________________> ivtv-devel
> > mailing list
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> > > https://lists.sourceforge.net/lists/listinfo/ivtv-devel
> > >
> >
> >
> > -------------------------------------------------------
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> > _______________________________________________
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> > ivtv-devel [at] lists
> > https://lists.sourceforge.net/lists/listinfo/ivtv-devel
> >
>
>
>
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nicolas.mainil at gmail

Jan 17, 2005, 4:09 PM

Post #12 of 18 (5244 views)
Permalink

Re: X working on PVR-350 but MPEG decoder doesn't [In reply to]

First, I really apologize for sending five times the same message but my
mail soft said it wasn't sent, really sorry.

Concerning the interrupts, I did a lot of tries today with settings in
the bios relating the interrupts. I tried first disabling the interrupts
of all that isn't necssary for ivtv (usb, onboard lan, ...) so I had a
system with very few interrupts but the problems didn't change
(/proc/interrupts said ivtv didn't share his interrupt). I tried
combinations of all the settings that I tought to be related from far or
from near to my problem :
Interrupt mode : PIC,APIC (since my kernel is compiled without local
APIC support, I think the right option is PIC am I right ? )
Plug'n'Play OS : YES,NO (it doesn't seem to have effect since devices
seem to be always configurated via acpi in linux)
PCI latency : 32,64 (tried it cause I saw the ivtv message saying
latency time was unreasonably low )
IDE bus master : Enabled,Disabled (tried this cause I was desperate)
PCI 2.1 : Enabled,Disabled (this too)

I got as some other poeple the message : suprious interrupt IRQ xx where
xx is usually 7 or 15 but I don't know if it's relevant. I tried to
change the PCI slot of my card but the case is too small (the card is on
a pci riser). Something else : a few times ago I started my system with
acpi=off kernel command line and ivtv didn't start properly, the log was
relating an interrupt allocation problem.

Concerning scheduling, I'm now running a kernel with the preemptible
kernel option disabled and it didn't change the behaviour of my system.

Another thing, I compiled my kernel wihtout the 4k STACK option cause
I'm running ndiswrapper.

I really think I messed up somewhere in my kernel config or maybe in the
bios but I don't know where.

thanks for the help

John Harvey wrote:

>This also feels like a scheduling problem. If this is happening then
>presumably we are running out of buffers somewhere. The encoder is stealing
>buffers so this means the app isn't taking them fast enough which maybe just
>down to scheduling.
>Also ivtv now has threads for handling a lot of this which possibly add more
>complexity to the scheduling issues.
>
>As far as I am aware there are about 3 scheduling policies available
>(preempt, low latency and standard), but I haven't looked into this beyond a
>1 minute look at the output of a google search.
>It could be that changing the scheduling policy for your kernel could have
>an effect on this.
>
>Others on the list may have more insight but I am sure I've seen mutterings
>in the hdtv mailings on myth-dev about disabling preempt fixing issues
>there. So that might be worth looking into.
>
>John
>
>
>
>>-----Original Message-----
>>From: ivtv-devel-admin [at] lists [mailto:ivtv-devel-
>>admin [at] lists] On Behalf Of sschaefer1 [at] woh
>>Sent: 17 January 2005 20:02
>>To: ivtv-devel [at] lists
>>Subject: Re: [ivtv-devel] X working on PVR-350 but MPEG decoder doesn't
>>
>>I also noticed that you said you have a PVR-350 (model 992).
>>I think model 990 is the most common, have you done a search on the
>>archive on "992" ??? Hopefully not, but it might be a compatibility
>>problem. If it were I would imagine there is some mention of it in the
>>archive. Sorry don't mean to scare you.
>>
>>----- Original Message -----
>>From: Nicolas Mainil <nicolas.mainil [at] gmail>
>>Date: Monday, January 17, 2005 12:40 pm
>>Subject: Re: [ivtv-devel] X working on PVR-350 but MPEG decoder doesn't
>>
>>
>>
>>>No, I've not been very clear. All the command lines were done
>>>while X
>>>wasn't launched on the PVR-350, I did them for testing purposes. But
>>>when starting X on the PVR-350 to use mythtv, the myth frontend is
>>>properly displayed but when attempting to play livetv or a
>>>recording I
>>>get no video or really really poor framerate ( I didn't forget to
>>>check the box USE PVR-350 HARDWARE in the mythtv setup ).
>>>So I think the problem is related to the decoder.
>>>
>>>Nicolas
>>>
>>>
>>>On Mon, 17 Jan 2005 12:26:06 -0500, sschaefer1 [at] woh
>>><sschaefer1 [at] woh> wrote:
>>>
>>>
>>>>Are you saying that you are attempting to playback a recording
>>>>
>>>>
>>>from a command line while X is running on the PVR 350's
>>>framebuffer tv out port?
>>>
>>>
>>>>----- Original Message -----
>>>>From: Nicolas Mainil <nicolas.mainil [at] gmail>
>>>>Date: Monday, January 17, 2005 11:21 am
>>>>Subject: [ivtv-devel] X working on PVR-350 but MPEG decoder doesn't
>>>>
>>>>
>>>>
>>>>>Hi,
>>>>>
>>>>>I want to use the PVR-350 output for mythtv. I managed to get X
>>>>>working on the PVR-350 (with the latest ivtvdev v0.8 driver) anr
>>>>>recording works very well but the decoder doesn't work or
>>>>>sometimes at
>>>>>really really poor framerate.
>>>>>When I do :
>>>>>cat /dev/video0 > tmp.mpg
>>>>>followed by
>>>>>dd if=tmp.mpg of=/dev/video16 bs=64k
>>>>>I get really poor framerate ( near 1 frame/sec )
>>>>>and when I do :
>>>>>dd if=/dev/video0 of=/dev/video16 bs=64k
>>>>>after variable time dmesg is full filled with this message
>>>>>
>>>>>
>>>until I
>>>
>>>
>>>>>stop dd :
>>>>>...
>>>>>ivtv ENC IRQ OVERFLOW STEALING A BUFFER 1024 CURRENTLY ALLOCATED
>>>>>...
>>>>>
>>>>>I tried a lot of kernel configs, numerous ivtv versions, some bios
>>>>>settings changes but nothing made the decoder working.
>>>>>
>>>>>
>>>Currently I
>>>
>>>
>>>>>work with :
>>>>>Gentoo Linux 2.6.10-r4 with udev
>>>>>bttv-0.9.15
>>>>>ivtv-0.3.2b
>>>>>on an Asus Pundit
>>>>>with 512 MB ram, Celeron 2GHz and a PVR-350 (model 992)
>>>>>
>>>>>Does someone have the same problem or know what this error
>>>>>
>>>>>
>>>means and
>>>
>>>
>>>>>maybe how to solve it ? I'd really appreciate too if people having
>>>>>success with the PVR-350 output on a similar setup than mine could
>>>>>send me (off list to avoid flooding the mailing-list) the
>>>>>
>>>>>
>>>config files
>>>
>>>
>>>>>they used to get it working.
>>>>>
>>>>>Thanks, Nicolas
>>>>>
>>>>>
>>>>>-------------------------------------------------------
>>>>>The SF.Net email is sponsored by: Beat the post-holiday blues
>>>>>Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
>>>>>It's fun and FREE -- well,
>>>>>
>>>>>
>>>almost....http://www.thinkgeek.com/sfshirt> >
>>>_______________________________________________> > ivtv-devel
>>>mailing list
>>>
>>>
>>>>>ivtv-devel [at] lists
>>>>>https://lists.sourceforge.net/lists/listinfo/ivtv-devel
>>>>>
>>>>>
>>>>>
>>>>-------------------------------------------------------
>>>>The SF.Net email is sponsored by: Beat the post-holiday blues
>>>>Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
>>>>It's fun and FREE -- well,
>>>>
>>>>
>>>almost....http://www.thinkgeek.com/sfshirt>
>>>_______________________________________________> ivtv-devel
>>>mailing list
>>>
>>>
>>>>ivtv-devel [at] lists
>>>>https://lists.sourceforge.net/lists/listinfo/ivtv-devel
>>>>
>>>>
>>>>
>>>-------------------------------------------------------
>>>The SF.Net email is sponsored by: Beat the post-holiday blues
>>>Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
>>>It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt
>>>_______________________________________________
>>>ivtv-devel mailing list
>>>ivtv-devel [at] lists
>>>https://lists.sourceforge.net/lists/listinfo/ivtv-devel
>>>
>>>
>>>
>>
>>-------------------------------------------------------
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>>Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
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>>_______________________________________________
>>ivtv-devel mailing list
>>ivtv-devel [at] lists
>>https://lists.sourceforge.net/lists/listinfo/ivtv-devel
>>
>>
>
>
>
>-------------------------------------------------------
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>https://lists.sourceforge.net/lists/listinfo/ivtv-devel
>
>
>

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nicolas.mainil at gmail

Jan 18, 2005, 10:03 AM

Post #13 of 18 (5252 views)
Permalink

Re: X working on PVR-350 but MPEG decoder doesn't [In reply to]

It seems I can get rid of the ENC IRQ OVERFLOW message by raising the
pci latency timer but it didn't improve the poor framerate :-(

Nicolas

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john.p.harvey at btinternet

Jan 18, 2005, 1:34 PM

Post #14 of 18 (5248 views)
Permalink

RE: X working on PVR-350 but MPEG decoder doesn't [In reply to]

No real idea but if you want to try turning on all debugging and sendming a
short segment from the messages file it may highlight something. Probably
best to send it direct to me or make it available on a web site.

John

> -----Original Message-----
> From: ivtv-devel-admin [at] lists [mailto:ivtv-devel-
> admin [at] lists] On Behalf Of Nicolas Mainil
> Sent: 18 January 2005 17:04
> To: ivtv-devel [at] lists
> Subject: Re: [ivtv-devel] X working on PVR-350 but MPEG decoder doesn't
>
> It seems I can get rid of the ENC IRQ OVERFLOW message by raising the
> pci latency timer but it didn't improve the poor framerate :-(
>
> Nicolas
>
>
> -------------------------------------------------------
> The SF.Net email is sponsored by: Beat the post-holiday blues
> Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
> It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt
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> https://lists.sourceforge.net/lists/listinfo/ivtv-devel

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roger at beardandsandals

Jan 18, 2005, 5:52 PM

Post #15 of 18 (5255 views)
Permalink

RE: X working on PVR-350 but MPEG decoder doesn't [In reply to]

Check hdparm to see if your disks are working in DMA mode.

R.

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nicolas.mainil at gmail

Jan 18, 2005, 6:02 PM

Post #16 of 18 (5245 views)
Permalink

Re: X working on PVR-350 but MPEG decoder doesn't [In reply to]

Already done and they are.

Nicolas

Roger James wrote:

>Check hdparm to see if your disks are working in DMA mode.
>
>R.
>
>
>
>
>-------------------------------------------------------
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>https://lists.sourceforge.net/lists/listinfo/ivtv-devel
>
>
>

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neokeats at wanadoo

Jan 18, 2005, 8:00 PM

Post #17 of 18 (5243 views)
Permalink

Re: X working on PVR-350 but MPEG decoder doesn't [In reply to]

hi,

did you try mpg_buffers=30 ?

adding it to the line ...
options ivtv tuner=38 ivtv_std=3 tda9887=0 mpg_buffers=30

and hdparm tuning ?
i use this one :
all_args="-d1 -W0"

d1 is for enable ultra dma
W0 is disable cache of the hard disk
i diisable the cache cause i think it's useless...
i doesn't acces repeatitively to the same data...
the result with the cache is that data transit via the cache
it takes time and make hard drive geeting heat for nothing...

i ve had ENC IRQ OVERFLOW too
but not since i did the changes...
maybe it's just coincidence...
time will say it to me :)

++

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nicolas.mainil at gmail

Jan 21, 2005, 9:04 AM

Post #18 of 18 (5267 views)
Permalink

Re: X working on PVR-350 but MPEG decoder doesn't [In reply to]

I tried but I get
/unknown parameter `mpg_buffers'/
and when I modprobe saa7127 test_image=1 I get
/Unknown parameter `test_image'/

Any ideas ?

I tried deactivating disk cache but it didn't work

Keats wrote:

>hi,
>
>did you try mpg_buffers=30 ?
>
>adding it to the line ...
>options ivtv tuner=38 ivtv_std=3 tda9887=0 mpg_buffers=30
>
>and hdparm tuning ?
>i use this one :
>all_args="-d1 -W0"
>
>d1 is for enable ultra dma
>W0 is disable cache of the hard disk
>i diisable the cache cause i think it's useless...
>i doesn't acces repeatitively to the same data...
>the result with the cache is that data transit via the cache
>it takes time and make hard drive geeting heat for nothing...
>
>i ve had ENC IRQ OVERFLOW too
>but not since i did the changes...
>maybe it's just coincidence...
>time will say it to me :)
>
>++
>
>
>-------------------------------------------------------
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>Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
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>https://lists.sourceforge.net/lists/listinfo/ivtv-devel
>
>
>

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