intel: display randomly going black with driver post-2.1.1

[Jesse Barnes]

On Thursday, May 22, 2008 5:58 am Paul Collins wrote:
> On my Mac Mini using version 2.3.1 of the Intel driver I get a weird
> problem where it looks like the display loses sync or goes black or
> something for a fraction of a second.  The backlight is still on, so it
> doesn't look like DPMS.  It varies between runs from happening once
> every ten or fifteen minutes to once every couple of minutes.  For a
> while I thought that switching from the 59.9 Hz mode to 60.0 Hz fixed
> it, but that was a red herring.
>
> In fact just now with the git version as of
> 165c0865d849b7d280a3a119fe9ae0ad34637df0 the display just went black and
> stayed black.  Neither mode switches nor VT switches revived it.
>
> Attached are server log files from runs with 2.1.1 (working), 2.3.1
> (problematic) and 165c0865 (problematic).

Sounds like it could be https://bugs.freedesktop.org/show_bug.cgi?id=13326.  
Can you try the patch in that bug and see if it helps for you?

Thanks,
Jesse