[mythtv-users] VideoOutputXv Problems...

Paul Andreassen paulx at andreassen.com.au
Mon Oct 9 11:13:44 UTC 2006


On Sun, 8 Oct 2006 10:44 am, Andy Speagle wrote:
> Hi all...
>
> I've setup my Dell D600 notebook as a remote frontend... and I'm watching
> live TV well enough... but it's jerky... here's the output I get...
>
> 2006-10-07 19:32:23.490 Opening OSS audio device '/dev/dsp'.

Try changing "/dev/dsp" to "ALSA:default" and "/dev/mixer" to "default".  Alsa 
is general better then oss.

> 2006-10-07 19:32:23.510 VideoOutputXv Error: Could not find suitable XVideo
> surface.
> 2006-10-07 19:32:23.510 VideoOutputXv: Falling back to X shared memory
> video output.
>                               *** May be slow ***

Your not using the video card to scale the video for you.  Probably broken ati 
drivers.  Its using Xshm and not xv which is faster/hardware.

> 2006-10-07 19:32:23.955 Realtime priority would require SUID as root.

You could try "chmod +s /usr/bin/mythfrontend" but its unlikely to make a 
difference.

> 2006-10-07 19:32:23.974 Video timing method: USleep with busy wait

echo 1024 > /proc/sys/dev/rtc/max-user-freq
or
echo "dev/rtc/max-user-freq=1024" >> /etc/sysctl.conf

This enables RTCVideoSync instead of BusyWaitVideoSync.  Should reduce the 
processor load.

> Now.. .with that said... I'm running Gentoo 2006.1 on this box... which is
> ATI Video based... I have the fglrx drivers installed and setup (
> ati-drivers-8.27.10-r1) .. both my frontend and remote backend are running
> MythTV .20 (v11444) ... here is the relevant device portion of my xorg.conf
>
> Section "Device"
>         Identifier  "aticonfig-Device[0]"
>         Driver      "fglrx"
>         Option      "UseInternalAGPGart" "no"
>         Option      "OpenGLOverlay" "on"
> EndSection
>
> Also... glxinfo says "direct rendering: Yes" ...
>
> So... I guess I need to be clued in on this one...

Broken drivers.  Check the mail list archives for other peoples problems with 
ati.

Best of Luck,
Paul
-- 


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