https://bugs.kde.org/show_bug.cgi?id=494407
Bug ID: 494407
Summary: After upgrade to Plasma 6.2 External monitor affected
by artifacts and low performance
Classification: Plasma
Product: kwin
Version: 6.2.0
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: grave
Priority: NOR
Component: general
Assignee: kwin-bugs-n...@kde.org
Reporter: evors...@protonmail.com
Target Milestone: ---
SUMMARY
After updating to Plasma 6.2 in Arch Linux today (2024-10-10) External monitor
is affected by serious artifacts.
STEPS TO REPRODUCE
1. Log in to Plasma session.
OBSERVED RESULT
Serious artifacts and very low performance on external monitor.
EXPECTED RESULT
No artifacts and normal performance.
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 6.1.5
KDE Frameworks Version: 6.6.0
Qt Version: 6.7.3
Kernel Version: 6.11.1-arch1-1.1-g14 (64-bit)
Graphics Platform: Wayland
Processors: 32 × AMD Ryzen 9 7945HX3D with Radeon Graphics
Memory: 62.0 GiB of RAM
Graphics Processor: AMD Radeon 610M
Manufacturer: ASUSTeK COMPUTER INC.
Product Name: ROG Strix G733PYV_G733PYV
System Version: 1.0
ADDITIONAL INFORMATION
Bug is reported on the Arch bbs here:
https://bbs.archlinux.org/viewtopic.php?pid=2201367#p2201367
The artifacts are visible on at least three different computers.
They show up when connected to the system HDMI port and when connected to a USB
dock.
Artifacts are visible on LTS kernel, and Asus' g-14 kernel.
Nvidia drivers are nvidia-open-dkms 560.35.03-12
There are no new errors in the system log files.
When downgrading to plasma 6.1.5 there are no issues. (Of course there are a
lot of packages involved in the downgrade)
Running Wayland because of the fractional scaling, High resolution monitors are
very hard to use without it.
The artifacts show up much more in high resolution and high frame rate with
different scaling applied to both monitors.
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