https://bugs.kde.org/show_bug.cgi?id=407252
--- Comment #9 from imagina...@mailbox.org ---
OK, this *could* be a driver-issue.
I've learned that the Xorg-Intel-driver (20180223) that I have installed
defaults to code for the SandyBridge architecture which may cause problems for
the older Clarkdale/Ironlake Core i3 of the system.
So I have added an /etc/X11/xorg.conf.d/20-intel.conf with the following
content:
Section "Device"
Identifier "Intel Graphics"
Driver "intel"
Option "DRI" "2" # DRI3 is default
#Option "AccelMethod" "sna" # default
Option "AccelMethod" "uxa" # fallback
EndSection
With that setup the problems with openGL in LibreOffice are gone [1]. Whether
this is also true for the freezes remains to be seen. I want to test that for a
week or so with openGL-2.0 and will report back.
[1] Writer: duplicate lines/headlines or ill-rendered fonts when scrolling; out
of sync zoom of split windows in Calc
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