[elrepo] Intel video on CentOS 6.4

[Matt Garman]

On Tue, Oct 1, 2013 at 2:41 AM, Andrey Zhunev <a-j at a-j.ru> wrote:

> Hello Akemi,
>
> Tuesday, October 1, 2013, 9:41:18 AM, you wrote:
>
> > First, the in-kernel driver i915 should work fine for your graphics
> > device. Do you really want to use the Intel driver from ELRepo?
>
> I would like to use vaapi for video playback.



FWIW, I have been trying off and on over the last few years to get vaapi to
work reliably on Sandy Bridge video hardware.  I haven't tried again in a
while, but I've always given up in frustration.

Looks like the last time I messed with this was in March.  What happens is,
I can use vaapi for playback... for a short while.  After some random
amount of time (could be a couple minutes, could be several hours), X will
completely lock up, and I have this in /var/log/messages:

Mar 28 16:57:09 mythtv kernel: [drm:i915_hangcheck_hung] *ERROR* Hangcheck
timer elapsed... GPU hung
Mar 28 16:57:09 mythtv kernel: [drm] capturing error event; look for more
information in /debug/dri/0/i915_error_state

If I try to look at the i915_error_state file, I get this:

[root at mythtv ~]# cat /sys/kernel/debug/dri/0/i915_error_state
cat: /sys/kernel/debug/dri/0/i915_error_state: Cannot allocate memory

Here[1] is a bug report of someone with a similar problem, but, it appears
to be abandoned.

I highly doubt this is an ELRepo problem, so this may not be the
appropriate forum to discuss it.  But if you manage to get it working
reliably and consistently, please let me know what alchemy of packages and
package versions you have installed (off-list is OK).  I have an i3-2100
CPU on an ASRock H67M-ITX.  This is for a media/home theater PC, so trying
to use vaapi under MythTV.

[1] https://bugs.freedesktop.org/show_bug.cgi?id=44554





> > Second, according to the X log, you are currently using the vesa
> > driver. Remove 'nomodeset' from the kernel boot options and try again.
>
> There is a problem with that. Whenever I boot without the 'nomodeset'
> option, the machine resets right at the start of the GUI (I just
> thought maybe it's when the Intel driver loads, or just about that
> moment). This happens in both CentOS and in Ubuntu, with Live CDs and
> with installations to HDD.
>
> Not sure what is causing that, but I can't get it to work without
> 'nomodeset' option at boot... :-(
>
> P.S. My motherboard is Asus P8Z68-V LE, and CPU is an i7-2600S.
>
>
> --
> Best regards,
>  Andrey
>
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>
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