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I bought a new Dell Precision 5770 [XPS 17], put Arch linux with gnome (wayland) on it and disabled the NVIDIA gpu. The system's native resolution is 1920x1200. When set to this resolution, whenever the mouse is moved around the bottom 20% of the screen, each time the cursor is moved the system visually freezes for a half sec (eg. if I play a video, the video skips and the cursor skips, updating only after half a sec and I see some small black line display artifacts on the screeen during the 0.5s. The audio does not skip during the 0.5sec.).
If I change to resolution to 1920x1080 or any resolution lower than the native resolution the problem goes away.
I don't see any events generated in dmesg or journalctl -xe. I don't see any spike in cpu or gpu in top or intel_gpu_top.
Any advice on how to debug this? Is this a GPU or touchpad issue? I tried installing the latest elantech touchpad drivers but the problem persists.
EDIT: I found setting the kernel parameter i915.enable_psr=0 makes the issue go away.
Last edited by crescent (2022-07-04 13:52:45)
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Could also be a gnome wayland issue, can you reproduce in a xorg session?
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I found setting the kernel parameter i915.enable_psr=0 makes the issue go away.
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Glad you were able to work around the issue.
Feel free to file a bug against the i915 driver if you don't mind debugging it a little bit more deeply.
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