[mythtv-users] Artefacts when using vdpau

[Razorblade]

Hello all,

Yesterday I setup my new box with MythDora 12.23.
Now When watching LiveTV using any of the vdpau profiles (slim or 
normal) I get artefacts every 20-30 seconds. This is on HD and SD.

My Hardware is a nVidia GeForce 8200 IGP.
I already tried to add "vdpaubuffersize=32" to the filter options, as 
mentioned somewhere in the mythtv/vdpau-wiki, but this did not help. 
"Extra Audio Buffering" and "OpenGL as timebase" are set

Here's my xorg.conf:

Section "ServerLayout"
     Identifier     "Layout0"
     Screen      0  "Screen0" 0 0
     InputDevice    "Keyboard0" "CoreKeyboard"
     InputDevice    "Mouse0" "CorePointer"
EndSection

Section "Files"
     FontPath        "/usr/share/fonts/default/Type1"
EndSection

Section "Module"
     Load           "dbe"
     Load           "extmod"
     Load           "type1"
     Load           "freetype"
     Load           "glx"
EndSection

Section "ServerFlags"
     Option         "Xinerama" "0"
EndSection

Section "InputDevice"
     # generated from default
     Identifier     "Mouse0"
     Driver         "mouse"
     Option         "Protocol" "auto"
     Option         "Device" "/dev/input/mice"
     Option         "Emulate3Buttons" "no"
     Option         "ZAxisMapping" "4 5"
EndSection

Section "InputDevice"
     # generated from data in "/etc/sysconfig/keyboard"
     Identifier     "Keyboard0"
     Driver         "kbd"
     Option         "XkbLayout" "de"
     Option         "XkbModel" "pc105"
     Option         "XkbVariant" "nodeadkeys"
EndSection

Section "Monitor"
     # HorizSync source: edid, VertRefresh source: edid
     Identifier     "Monitor0"
     VendorName     "Unknown"
     ModelName      "TSB TOSHIBA-TV"
     HorizSync       15.0 - 46.0
     VertRefresh     49.0 - 61.0
     Option         "DPMS"
EndSection

Section "Device"
     Identifier     "Device0"
     Driver         "nvidia"
     VendorName     "NVIDIA Corporation"
     BoardName      "GeForce 8200"
     Option "FlatPanelProperties" "Scaling = Native"
     Option "UseEvents" "True"
     Option "TripleBuffer" "True"
EndSection

Section "Screen"
     Identifier     "Screen0"
     Device         "Device0"
     Monitor        "Monitor0"
     DefaultDepth    24
     Option         "TwinView" "0"
     Option         "metamodes" "1280x720 +0+0"
     SubSection     "Display"
         Depth       24
     EndSubSection
EndSection

Section "Extensions"
     Option "Composite" "Disabled"
EndSection

I'm using the nvidia kmod that came with the MythDora installation.

This is what is in my mythfrontend.log:

010-04-25 19:32:23.081 ProgramInfo(): Updated pathname '':'' -> 
'13003_20100425193222.mpg'
2010-04-25 19:32:23.435 WriteAudio: buffer underrun
2010-04-25 19:32:23.548 NVP(0): Forcing decode extra audio option on 
(Video method requires it).
2010-04-25 19:32:24.998 NVP(0): Forcing decode extra audio option on 
(Video method requires it).
2010-04-25 19:32:24.998 AFD Error: Could not find decoder for codec 
(DVB_TELETEXT), ignoring.
2010-04-25 19:32:25.035 NVP(0): Prebuffer wait timed out 10 times.
2010-04-25 19:33:51.884 AFD Error: Unknown audio decoding error
2010-04-25 19:34:06.582 ProgramInfo(): Updated pathname '':'' -> 
'13040_20100425193406.mpg'
2010-04-25 19:34:06.588 ProgramInfo(): Updated pathname '':'' -> 
'13040_20100425193406.mpg'
2010-04-25 19:34:06.617 msg: On known multiplex...
2010-04-25 19:34:07.067 NVP(0): Forcing decode extra audio option on 
(Video method requires it).
2010-04-25 19:34:07.829 AFD Error: Could not find decoder for codec 
(DVB_TELETEXT), ignoring.
2010-04-25 19:34:08.340 WriteAudio: buffer underrun
2010-04-25 19:34:10.032 WriteAudio: buffer underrun
2010-04-25 19:34:10.105 WriteAudio: buffer underrun
2010-04-25 19:34:10.145 WriteAudio: buffer underrun
2010-04-25 19:35:07.825 ProgramInfo(): Updated pathname '':'' -> 
'13003_20100425193507.mpg'
2010-04-25 19:35:07.834 ProgramInfo(): Updated pathname '':'' -> 
'13003_20100425193507.mpg'
2010-04-25 19:35:07.869 msg: On known multiplex...
2010-04-25 19:35:08.118 NVP(0): Forcing decode extra audio option on 
(Video method requires it).
2010-04-25 19:35:09.363 AFD Error: Could not find decoder for codec 
(DVB_TELETEXT), ignoring.
2010-04-25 19:35:35.714 AFD Error: Unknown audio decoding error
2010-04-25 19:37:44.908 AFD Error: Unknown audio decoding error
2010-04-25 19:38:10.852 AFD Error: Unknown audio decoding error
2010-04-25 19:40:03.345 AFD Error: Unknown audio decoding error
2010-04-25 19:43:36.113 AFD Error: Unknown audio decoding error
2010-04-25 19:44:18.849 AFD Error: Unknown audio decoding error
2010-04-25 19:45:15.237 AFD Error: Unknown audio decoding error
2010-04-25 19:46:32.902 AFD Error: Unknown audio decoding error
2010-04-25 19:48:03.947 AFD Error: Unknown audio decoding error
2010-04-25 19:49:39.633 AFD Error: Unknown audio decoding error
2010-04-25 19:49:51.963 AFD Error: Unknown audio decoding error
2010-04-25 19:54:43.857 AFD Error: Unknown audio decoding error

Does anybody know anything about this or how to resolve that?

Greetings
Bjoern
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