Bug#794393: xserver-xorg-video-intel: Backport version causes hang on resume from suspend on Jessie

[Jerome <an.inbox@free.fr>]

On Thu, 6 Aug 2015 23:54:15 +0200 Jerome <an.inbox@free.fr> wrote:
> The issue looks fixed in Intel DRM nightly kernel, see on FDO for 
details:
> https://bugs.freedesktop.org/show_bug.cgi?id=90342#c7

I jumped to conclusion too quickly there. As indicated in the FDO how-to 
to submit bugs, when I tested the nightly Intel DRM kernel I had extra 
DRM logs enabled (drm.debug=0x1e), which was not the case when I tried 
Debian kernels 4.0.8 and 4.1.3. It turns out that the extra logs hide 
the issue. Without extra DRM logs, the Intel nightly kernel shows the 
same issue that the 4.X Debian kernels.
So the problem still exists upstream, and tracked by a new bug #91585 at 
FDO:
    https://bugs.freedesktop.org/show_bug.cgi?id=91585

The bug was submitted on the backported Intel X driver as it's the 
change that triggered the suspend issue, but it now looks like a kernel 
bug.

Thanks,

Jerome