Intel GMA 900 & XVideo Accelleration (i810 drivers)

[galenz at zinkconsulting.com]

On Sep 10, 2006, at 6:15 PM, Andrew Barr wrote:

> On Sun, 2006-09-10 at 13:52 -0700, galenz at zinkconsulting.com wrote:
>> man i810 does not mention LinearAlloc.
>
>        Option "LinearAlloc" "integer"
>         Allows  more  memory  for  the offscreen allocator. This  
> usually
>         helps in situations where HDTV movies are required to   
> play  but
>         not  enough  offscreen  memory is usually available. Set  
> this to
>         6144 for upto 1920x1080 HDTV support.  Default 0KB (off).
>
>
>> I enabled LinearAlloc to 32768 - higher than the minimum values most
>> people on Google suggest for HD.
>
> I don't know what the driver does on invalid values (as the text above
> suggests 32768 might be) so try 6144 and see what it does.
>
> Although you've got a real segfault so that might not be the  
> solution to
> your problem.
>
>
>> When I attempt to play the 1080i file using XVideo, continues to VLC
>> segfault. From /var/log/messages:
>> vlc[2871]: segfault at 00002aaab99d5000 rip 00002aaab869d8e3 rsp
>> 000000045006fc8 error 6
>
> A backtrace from gdb might be useful to pinpoint exactly what is going
> on here.
>
>> Other than that, the only VLC-related errors in that log are like  
>> this:
>> audit(1157882914.686:23): avc: granted {execmem} for pid=2930
>> comm="vlc" scontext=user_u:system_r:unconfined_t:s0
>> tcontext=user=user_u:system_r:unconfined_t:s0 tclass=process
>>
>> Occasionally, a similar line will occur that is like that but reads
>> {execstack} instead of {execmem}.
>
> Ah hah.
>
> This is SELinux output. If I were you, I'd turn it off. When I used
> Fedora Core I always did. Red Hat provides a GUI utility to do this  
> but
> you can also pass a boot parameter, the exact syntax of which  
> escapes me
> at the moment.
>
> I'm willing to bet SELinux is your problem, turn that off and this
> should go away.
>
> -- 
> Andrew Barr | http://www.oakcourt.dyndns.org/~andrew/
>
> "Buzzword detected (core dumped)"
>   -- seen on linux-kernel at vger.kernel.org


Thanks for the suggestions.

LinearAlloc is now at 6144. CacheLines are at 2500. SELinux has been  
completely disabled.

The situation has not changed - same error 6 segfault with VLC. All  
the other SELinux errors are gone, however.

As always, DVD and 720p resolution video plays perfectly with XVideo  
output. 1080i still breaks.

Any further ideas? Should I post entire log files and my xorg.conf?

-Galen