since I upgraded to Fedora 32, I have often noticed that the mouse pointer leaves traces. Essentially, what remains as a trace is a single, partially incomplete, copy of the mouse pointer. So far, I have not been able to determine if this is related to a specific application or mouse gesture.
To me it looks as if the screen is simply not redrawn properly. Sometimes it happens multiple times within some minutes, sometimes everything is fine for hours. The issue is only present in GNOME Wayland, the X session runs without problems.
Does anyone have an idea where to start debugging? Here is some system information:
Well, I do not think that it is a touchpad issue, as it works with X. Both, Wayland and X, should use libinput as the touchpad driver.
My impression is that it might be related to the GPU driver (amdgpu) or the compositor. The driver has seen a lot of changes for 5.6 (see here). Maybe I should try running one of the 5.7 RCs.