Intel GMA 900 & XVideo Accelleration (i810 drivers)

[Andrew Barr]

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