On 2020-04-05 09:59, Stephen Morris wrote:
On 3/4/20 1:31 pm, fed...@eyal.emu.id.au wrote:
In case this matters - the system runs in 4k (3840x2160@30) mode which is on 
spec for the mobo.

Just out of curiosity, are you sure you are using X and not Wayland? I am 
running F31 in a vm under Windows 10, and when I use Gnome under Wayland with 
the screen in the equivalent of 3840x2160 I get double overlays in windows when 
expanded past a certain size, which was initially highlighted when I ran with 
windows maximized to 3840x2160, but this issue did not occur in Gnome running 
on X, and did not occur in KDE.
Just one further question, are you able to increase the refresh rate and see if 
that makes a difference? I run my system in 3840x2160@60 mode when running X 
(Wayland scaled, X didn't) by adding a file into /etc/X11/xorg.conf.d 
specifying the relevant modeline to run X in that mode.

regards,
Steve

$ ps aux|grep X
root        3108  4.5  1.3 1387896 430160 tty1   Ssl+ Apr04  67:48 
/usr/libexec/Xorg -background none :0 vt01 -nolisten tcp -novtswitch -auth 
/var/run/lxdm/lxdm-:0.auth
$ ls -l /var/log/Xorg.0.log*
-rw-r--r-- 1 root root 257217 Apr  5 07:57 /var/log/Xorg.0.log
-rw-r--r-- 1 root root  53570 Apr  4 09:32 /var/log/Xorg.0.log.old

--
Eyal at Home (fed...@eyal.emu.id.au)
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