https://bugs.kde.org/show_bug.cgi?id=482672
Bug ID: 482672
Summary: Using monitors with differing refresh rates makes them
unusable
Classification: Plasma
Product: kwin
Version: 6.0.1
Platform: Arch Linux
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: wayland-generic
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
SUMMARY
I have two monitors set to 144Hz, and a third which runs at 60Hz. In both SDDM
and KDE (both plasma 5.X and 6.X), plugging in the third monitor (either before
boot or while running) causes the two 144Hz monitors to go black, and the 60Hz
monitor gets all glitchy, flashing black and not responding. Similar to
https://bugs.kde.org/show_bug.cgi?id=465712, if BOTH 144Hz monitors are set to
60Hz, this setup works fine. Setting either to 60 while the other still
operates at 144 also triggers the aagressive visual glitching. However, since
that issue was solved and my graphical glitching is much more severe, I'm
opening a separate issue.
After unplugging the display again, plasma freezes, and the following shows in
dmesg:
Mar 07 09:30:04 proton kernel: nvidia-modeset: ERROR: GPU:0: Idling display
engine timed out: 0x0000c67e:6:0:1173
Mar 07 09:30:06 proton kernel: nvidia-modeset: ERROR: GPU:0: Idling display
engine timed out: 0x0000c67e:6:0:1173
Mar 07 09:30:08 proton kernel: nvidia-modeset: ERROR: GPU:0: Idling display
engine timed out: 0x0000c67e:6:0:1173
Mar 07 09:30:10 proton kernel: nvidia-modeset: ERROR: GPU:0: Idling display
engine timed out: 0x0000c67e:6:0:1173
Mar 07 09:30:12 proton kernel: nvidia-modeset: ERROR: GPU:0: Idling display
engine timed out: 0x0000c67e:6:0:1173
Mar 07 09:30:14 proton kernel: nvidia-modeset: ERROR: GPU:0: Idling display
engine timed out: 0x0000c67e:6:0:1173
Mar 07 09:30:16 proton kernel: nvidia-modeset: ERROR: GPU:0: Idling display
engine timed out: 0x0000c67e:6:0:1173
Mar 07 09:30:18 proton kernel: nvidia-modeset: ERROR: GPU:0: Idling display
engine timed out: 0x0000c67e:6:0:1173
Mar 07 09:30:20 proton kernel: nvidia-modeset: ERROR: GPU:0: Idling display
engine timed out: 0x0000c67e:6:0:1173
Mar 07 09:30:22 proton kernel: nvidia-modeset: ERROR: GPU:0: Idling display
engine timed out: 0x0000c67e:6:0:1173
Mar 07 09:30:24 proton kernel: nvidia-modeset: ERROR: GPU:0: Idling display
engine timed out: 0x0000c67e:6:0:1173
Mar 07 09:30:26 proton kernel: nvidia-modeset: ERROR: GPU:0: Idling display
engine timed out: 0x0000c67e:6:0:1173
Mar 07 09:30:28 proton kernel: nvidia-modeset: ERROR: GPU:0: Idling display
engine timed out: 0x0000c67e:6:0:1173
Mar 07 09:30:30 proton kernel: nvidia-modeset: ERROR: GPU:0: Idling display
engine timed out: 0x0000c67e:6:0:1173
Mar 07 09:30:32 proton kernel: nvidia-modeset: ERROR: GPU:0: Idling display
engine timed out: 0x0000c67e:6:0:1173
Mar 07 09:30:34 proton kernel: nvidia-modeset: ERROR: GPU:0: Idling display
engine timed out: 0x0000c67e:6:0:1173
Mar 07 09:30:37 proton kernel: nvidia-modeset: ERROR: GPU:0: Idling display
engine timed out: 0x0000c67e:6:0:1173
Mar 07 09:30:39 proton kernel: nvidia-modeset: ERROR: GPU:0: Idling display
engine timed out: 0x0000c67e:6:0:1173
Mar 07 09:30:41 proton kernel: nvidia-modeset: ERROR: GPU:0: Idling display
engine timed out: 0x0000c67e:6:0:1173
Mar 07 09:30:43 proton kernel: nvidia-modeset: ERROR: GPU:0: Idling display
engine timed out: 0x0000c67e:6:0:1173
Mar 07 09:30:45 proton kernel: nvidia-modeset: ERROR: GPU:0: Idling display
engine timed out: 0x0000c67e:6:0:1173
STEPS TO REPRODUCE
1. Plug in a 60Hz monitor on a 144Hz system.
OBSERVED RESULT
The screens stop working as expected
EXPECTED RESULT
The screens work as expected
SOFTWARE/OS VERSIONS
Linux: 6.7.8-zen1-1-zen (64-bit)
KDE Plasma Version: 6.0.1
KDE Frameworks Version: 6.0.0
Qt Version: 6.6.2
ADDITIONAL INFORMATION
Displays:
- 2x LG UltraGear 27GN650-B
- Huion Kamvas 13
GPU: NVIDIA GeForce RTX 4080 SUPER
Driver: Proprietary NVIDIA 550.54.14
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