Bug#900352: new xorg-server version causes a random freezes in plasmashell

[Martin Steigerwald <martin@lichtvoll.de>]

Hi.

Maximiliano Curia - 29.05.18, 14:18:
> Package: src:xorg-server
> Version: 2:1.20.0-2
> Severity: critical
> Tags: upstream
[…] 
> The severity is set as it breaks "unrelated programs" although I'm not
> sure a desktop environment can be called "unrelated" to x, but in any
> case, it would be better if this version of xorg does not migrate to
> testing till this is fixed.

Probably related:

xserver-xorg-core: flickering, black screen and modeset driver error: 
flip queue failed: Cannot allocate memory

https://bugs.debian.org/900333

But depends on whether you use modesettings driver and have your Xorg 
log spammed with:

[  1201.939] (WW) modeset(0): flip queue failed: Cannot allocate memory
[  1201.939] (WW) modeset(0): Page flip failed: Cannot allocate memory
[  1201.939] (EE) modeset(0): present flip failed

Thanks,
-- 
Martin