[gentoo-user] Re: Two video problems: Mythtv and xscreensaver [SOLVED]

[Michael Sullivan]

On 12/10/11 14:37, Michael Sullivan wrote:
> I'm having a problem on my personal workstation where mythfrontend will
> not display video when Watch TV is requested.  The sound works just
> fine.  When I issue a
>
> michael@camille ~ $ mplayer /dev/video0
> MPlayer SVN-r33094-4.4.5 (C) 2000-2011 MPlayer Team
> Can't open joystick device /dev/input/js0: No such file or directory
> Can't init input joystick
> mplayer: could not connect to socket
> mplayer: No such file or directory
> Failed to open LIRC support. You will not be able to use your remote
> control.
>
> Playing /dev/video0.
> Cannot seek backward in linear streams!
> Seek failed
> Cannot seek backward in linear streams!
> Seek failed
> Cannot seek backward in linear streams!
> Seek failed
> Cannot seek backward in linear streams!
> Seek failed
> Cannot seek backward in linear streams!
> Seek failed
> Cannot seek backward in linear streams!
> Seek failed
> Cannot seek backward in linear streams!
> Seek failed
> Cannot seek backward in linear streams!
> Seek failed
> Cannot seek backward in linear streams!
> Seek failed
> Cannot seek backward in linear streams!
> Seek failed
> Cannot seek backward in linear streams!
> Seek failed
> Cannot seek backward in linear streams!
> Seek failed
> Cannot seek backward in linear streams!
> Seek failed
> Cannot seek backward in linear streams!
> Seek failed
> Cannot seek backward in linear streams!
> Seek failed
> Cannot seek backward in linear streams!
> Seek failed
> Cannot seek backward in linear streams!
> Seek failed
> Cannot seek backward in linear streams!
> Seek failed
> Cannot seek backward in linear streams!
> Seek failed
> Cannot seek backward in linear streams!
> Seek failed
> Cannot seek backward in linear streams!
> Seek failed
> Cannot seek backward in linear streams!
> Seek failed
> Cannot seek backward in linear streams!
> Seek failed
> Cannot seek backward in linear streams!
> Seek failed
> MPEG-PS file format detected.
> VIDEO:  MPEG2  480x480  (aspect 2)  29.970 fps  6000.0 kbps (750.0 kbyte/s)
> Load subtitles in /dev/
> [VO_TDFXFB] This driver only supports the 3Dfx Banshee, Voodoo3 and
> Voodoo 5.
> ==========================================================================
> Opening video decoder: [ffmpeg] FFmpeg's libavcodec codec family
> Selected video codec: [ffmpeg2] vfm: ffmpeg (FFmpeg MPEG-2)
> ==========================================================================
> ==========================================================================
> Opening audio decoder: [mp3lib] MPEG layer-2, layer-3
> AUDIO: 48000 Hz, 2 ch, s16le, 384.0 kbit/25.00% (ratio: 48000->192000)
> Selected audio codec: [mp3] afm: mp3lib (mp3lib MPEG layer-2, layer-3)
> ==========================================================================
> AO: [oss] 48000Hz 2ch s16le (2 bytes per sample)
> Starting playback...
> Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
> VO: [xv] 480x480 => 640x480 Planar YV12
> [mpeg2video @ 0x87a1ce0]warning: first frame is no keyframe
> [VD_FFMPEG] DRI failure.
> A:   0.7 V:   1.3 A-V: -0.591 ct:  0.000   2/  2 ??% ??% ??,?% 1 0
> [mpeg2video @ 0x87a1ce0]warning: first frame is no keyframe
> A:   9.3 V:   9.3 A-V: -0.015 ct: -0.788 241/241  9%  0%  1.4% 4 0
>
> Exiting... (Quit)
>
> there is still no picture, but sound is present.  My xscreesaver is set
> to glslideshow displaying pictures and it doesn't display pictures.
> When I run it, I get these errors:  (from ~/.xsession-errors)
>
> X error in glslideshow:
> X Error of failed request:  BadDrawable (invalid Pixmap or Window parameter)
>   Major opcode of failed request:  136 (DRI2)
>   Minor opcode of failed request:  8 (DRI2SwapBuffers		)
>   Resource id in failed request:  0x3200070
>   Serial number of failed request:  1999
>   Current serial number in output stream:  1999
> xscreensaver-getimage: target pixmap 0x340010a unexpectedly deleted
>
>
> When I look at the Xorg logs, I find this:
>
> camille ~ # grep EE /var/log/Xorg.0.log
> 	(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
> [621028.083] (II) Loading extension MIT-SCREEN-SAVER
> [621029.135] (EE) intel(0): Detected a hung GPU, disabling acceleration.
> [621029.135] (EE) intel(0): When reporting this, please include
> i915_error_state from debugfs and the full dmesg.
> [621215.105] (EE) intel(0): [DRI2] DRI2SwapBuffers: drawable has no back
> or front?
> [621217.191] (EE) intel(0): [DRI2] DRI2SwapBuffers: drawable has no back
> or front?
>
> Just before I got this listing I restarted X after doing a qlist -I -C
> x11-drivers/ and re-merging all of them (there were like 10).
> Mythfrontend Watch TV works fine from every other computer on my
> network, and the recordings are fine, so I'm pretty sure it's this
> DRI2SwapBuffers thing.  What should I do to resolve this?


I rebuilt my kernel and rebooted and everything is fine now.  I think
somehow some of my kernel modules are being overwritten.  I don't know
how, but rebuilding the kernel seems to fix it when it happens...