https://bugs.kde.org/show_bug.cgi?id=423996
Bug ID: 423996
Summary: Lag and wrong UI scale with Quadro RTX 5000, kubuntu
20.04 install fails
Product: plasma-integration
Version: 5.18.5
Platform: Kubuntu Packages
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: general
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
SUMMARY
First of all I must apologise if I post this issue here, but to be honest the
bugreport interface is a nightmare with millions of entries! After 5 minutes of
searching I started to pull my hair out to find which is the right category for
this!!!
All I want to simply report is that I am getting terrible lag with the kde
interface using my new Quadro RTX 5000 card. Some of the facts:
1) Installation of Kubuntu 20.04 completely fails in normal graphics mode. The
text printed on the screen during loading is completely covered with bad green
pixel errors. Only 'safe graphics mode' installation is possible (if that's how
it is called exactly)
2) Desktop Affects and the whole KDE experience is lagish. On this system I had
an AMD Radeon 7 before, which worked very fine with Pop OS 19.10/20.04 Gnome +
KDE Standard combo.
3) On a fresh Kubuntu 20.04 install the mouse size changes from giant to small
and back based on which interface the mouse is on. I have to force a constant
mouse size which I did not have to do before.
4) The entire DPI scaling seems to be off. Please see attached picture.
I am using a 4k monitor in the middle, and two 2K monitor on the side in
portrait position.
NVIDIA Driver version is 440.100 which is the default that gets installed.
SOFTWARE/OS VERSIONS
Windows:
macOS:
Linux/KDE Plasma: Kubuntu/Pop OS 20.04
(available in About System)
KDE Plasma Version: 5.18.5
KDE Frameworks Version: 5.68.5
Qt Version: 5.12.8
Kernel: 5.4.0-7634-generic
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