[Bug 107420] [hsw] GPU HANG: ecode 7:0:0x86dffffd in Xorg

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=107420

--- Comment #18 from Georg <gchomse at chomse.de> ---
I'm now pretty sure that the root cause is a chang on the kernel side. Code,
bahaviour, defaults, interaction with other packages, ... - whatever.

I tried with Ubuntu18.04 and Manjaro (Arch) and downgraded the kernel from 4.15
to 4.08 (Ubuntu) and from 4.19 to 4.4 (Manjaro) and the problem is gone.
In both cases I don't do anything else explicitely. I install the kernel and
reboot. Entering the desktop shows freezing (gpu hang) with actual kernel or
normal behavior with older versions. 

My investigation showed that 4.9 or higher has my problem.
Just for compleetness here: my BIOS is up to date and 'intel-microcode' seems
to be the latest as well.

If anybody want's to have more information I am happy to support, otherwise I
have my ear close to some forums and wait..

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