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PostPosted: Mon Feb 01, 2010 11:39 pm 
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Joined: Mon Aug 01, 2005 9:54 pm
Posts: 77
I just updated to the testing repositories in order to get VDPAU support. I'm having problems where, every few minutes, the screen will black out, then come back after a couple of seconds. Every time this happens, I see the following in the mythfrontend.log:


Code:
2010-02-01 23:20:17.214 VDPAU Error: DISPLAY PRE-EMPTED. Aborting playback.
2010-02-01 23:20:17.215 VDPAU Error: Error at util-vdpau.cpp:1044 (#3, An invalid handle value was provided.)
2010-02-01 23:20:17.215 VDPAU Error: Error at util-vdpau.cpp:1242 (#2, The display was pre-empted, or a fatal error occurred.)
2010-02-01 23:20:17.215 VDPAU Error: Error at util-vdpau.cpp:1327 (#3, An invalid handle value was provided.)
2010-02-01 23:20:17.215 VidOutVDPAU Error: IsErrored() is true in Show()
2010-02-01 23:20:17.215 NVP: Error condition detected in videoOutput after Show(), aborting playback.
2010-02-01 23:20:17.215 VDPAU Error: Error at util-vdpau.cpp:857 (#3, An invalid handle value was provided.)
2010-02-01 23:20:17.216 VDPAU Error: Error at util-vdpau.cpp:868 (#3, An invalid handle value was provided.)
2010-02-01 23:20:17.216 VDPAU Error: Error at util-vdpau.cpp:868 (#3, An invalid handle value was provided.)
2010-02-01 23:20:17.216 VDPAU Error: Error at util-vdpau.cpp:868 (#3, An invalid handle value was provided.)
2010-02-01 23:20:17.216 VDPAU Error: Error at util-vdpau.cpp:868 (#3, An invalid handle value was provided.)
2010-02-01 23:20:17.216 VDPAU Error: Error at util-vdpau.cpp:868 (#3, An invalid handle value was provided.)
2010-02-01 23:20:17.216 VDPAU Error: Error at util-vdpau.cpp:868 (#3, An invalid handle value was provided.)
2010-02-01 23:20:17.216 VDPAU Error: Error at util-vdpau.cpp:868 (#3, An invalid handle value was provided.)
2010-02-01 23:20:17.216 VDPAU Error: Error at util-vdpau.cpp:868 (#3, An invalid handle value was provided.)
2010-02-01 23:20:17.216 VDPAU Error: Error at util-vdpau.cpp:868 (#3, An invalid handle value was provided.)
2010-02-01 23:20:17.216 VDPAU Error: Error at util-vdpau.cpp:868 (#3, An invalid handle value was provided.)
2010-02-01 23:20:17.217 VDPAU Error: Error at util-vdpau.cpp:868 (#3, An invalid handle value was provided.)
2010-02-01 23:20:17.217 VDPAU Error: Error at util-vdpau.cpp:868 (#3, An invalid handle value was provided.)
2010-02-01 23:20:17.217 VDPAU Error: Error at util-vdpau.cpp:868 (#3, An invalid handle value was provided.)
2010-02-01 23:20:17.217 VDPAU Error: Error at util-vdpau.cpp:868 (#3, An invalid handle value was provided.)
2010-02-01 23:20:17.217 VDPAU Error: Error at util-vdpau.cpp:868 (#3, An invalid handle value was provided.)
2010-02-01 23:20:17.217 VDPAU Error: Error at util-vdpau.cpp:868 (#3, An invalid handle value was provided.)
2010-02-01 23:20:17.217 VDPAU Error: Error at util-vdpau.cpp:868 (#3, An invalid handle value was provided.)
2010-02-01 23:20:17.217 VDPAU Error: Error at util-vdpau.cpp:926 (#3, An invalid handle value was provided.)
2010-02-01 23:20:17.217 VDPAU Error: Error at util-vdpau.cpp:926 (#3, An invalid handle value was provided.)
2010-02-01 23:20:17.218 VDPAU Error: Error at util-vdpau.cpp:926 (#3, An invalid handle value was provided.)
2010-02-01 23:20:17.218 VDPAU Error: Error at util-vdpau.cpp:926 (#3, An invalid handle value was provided.)
2010-02-01 23:20:17.218 VDPAU Error: Error at util-vdpau.cpp:606 (#3, An invalid handle value was provided.)
2010-02-01 23:20:17.218 VDPAU Error: Error at util-vdpau.cpp:614 (#3, An invalid handle value was provided.)
2010-02-01 23:20:17.504 TV: StartPlayer(0, Watching WatchingLiveTV, main) -- begin
Xlib:  extension "Generic Event Extension" missing on display ":0.0".
Xlib:  extension "Generic Event Extension" missing on display ":0.0".
2010-02-01 23:20:17.586 AFD: Opened codec 0xa64d6c0, id(MPEG2VIDEO) type(Video)
2010-02-01 23:20:17.586 AFD: codec AC3 has 6 channels
2010-02-01 23:20:17.587 AFD: Opened codec 0xa6f8050, id(AC3) type(Audio)
2010-02-01 23:20:17.592 Opening audio device '/dev/adsp'. ch 6(2) sr 48000
2010-02-01 23:20:17.592 Opening OSS audio device '/dev/adsp'.
2010-02-01 23:20:17.599 Opening audio device '/dev/adsp'. ch 2(2) sr 48000
2010-02-01 23:20:17.599 Opening OSS audio device '/dev/adsp'.
Xlib:  extension "Generic Event Extension" missing on display ":0.0".
Xlib:  extension "Generic Event Extension" missing on display ":0.0".
Xlib:  extension "Generic Event Extension" missing on display ":0.0".
Xlib:  extension "Generic Event Extension" missing on display ":0.0".
Xlib:  extension "Generic Event Extension" missing on display ":0.0".
2010-02-01 23:20:18.404 NVP(1): Forcing decode extra audio option on (Video method requires it).
2010-02-01 23:20:18.406 OSD Theme Dimensions W: 640 H: 480
2010-02-01 23:20:19.158 TV: StartPlayer(0, Watching WatchingLiveTV, main) -- end ok
Xlib:  extension "Generic Event Extension" missing on display ":0.0".
2010-02-01 23:20:19.162 Video sync method can't support double framerate (refresh rate too low for bob deint)
Xlib:  extension "Generic Event Extension" missing on display ":0.0".
2010-02-01 23:20:19.165 Video timing method: USleep with busy wait
2010-02-01 23:20:19.165 Realtime priority would require SUID as root.
2010-02-01 23:20:19.402 NVP(1): prebuffering pause



I have a sparkle 9500GT PCI card. The drivers are the latest ones in the repositories (190.53). The system is a 2 Ghz P4 with 1 gig of RAM. I'm using the VDPAU Slim playback profile.

Does anyone have any ideas how to fix this issue?


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PostPosted: Tue Feb 02, 2010 5:45 pm 
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Joined: Mon Dec 24, 2007 9:47 am
Posts: 535
Location: Ottawa, Canada
I have seen this too on my Sparkle PCI 8400GS. It happens less frequently than you note but it still happens. I have two 9300's embedded on mother boards that have no issue.

There are some chip set incompatibilities which may be part of the issue but I'm willing to bet it is an Nvidia bug with PCI interactions.

I was able to reduce (and almost eliminate) the issue simply by turning off the de-interlacing for your playback profile. In my case it didn't affect the video quality. If it affects your you could experiment with less demanding de-interlacing algorithms.

I have also noticed this only on 480i based programs which are encoded with H.264 (i.e. HD-PVR output) but not on higher res stuff. So one variant I have used that was very reliable was to create a video profile that used FFMPEG for <720 resolution and VDPAU for >=720.


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PostPosted: Tue Feb 02, 2010 7:27 pm 
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Joined: Thu Apr 03, 2008 11:42 pm
Posts: 114
Location: Calgary, Canada
+1 on lowering the de-interlacing settings. I only had the occasional occurence of the display being pre-empted but haven't had any since I adjusted the settings over a month ago. I also have a HD-PVR and am using VDPAU for all resolutions. Graphics card is an 8600GT.

Only thing I get now is sometimes on HD channel playback (be it an HD or non-HD program) the audio gets choppy, but restarting the front and back ends clears it up. (That's my brute force "fix" until I can look into it.)


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PostPosted: Wed Feb 03, 2010 9:23 pm 
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Joined: Mon Dec 24, 2007 9:47 am
Posts: 535
Location: Ottawa, Canada
Another theory I have is it may be something to do with PCI or possibly power based settings that may be slowing the PCI bus down.

I don't know if anyone has tried adding some kernel parameters to affect these attributes.


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PostPosted: Mon Feb 08, 2010 10:10 pm 
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Joined: Mon Aug 01, 2005 9:54 pm
Posts: 77
Turning off the de-interlacers helped, but didn't completely fix the problem. I am pretty disappointed since I spent the extra money to get a 9500 instead of an 8x00 series because I only heard good things about the de-interlacers.


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PostPosted: Wed Feb 10, 2010 6:18 pm 
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Joined: Mon Dec 24, 2007 9:47 am
Posts: 535
Location: Ottawa, Canada
sure. But I think the issue is PCI integration not the chipset per se. Have you tried modifying the PCI bus or power parameters?

You haven't said what kind of content is failing.

On mine only SD based (480i) streams are an issue. For those you could simply use ffmpeg and only use vdpau for the 720 and up as I suggested as well.


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