On Fri, 3 Apr 2020 08:51:27 +1100 fedora@eyal.emu.id.au wrote:
No definitive answers, just some questions to point you to troubleshooting.
[the images will be posted as replies due to size limits]
For a while now I have the following problem. After boot and login things look OK, however moving any window shows terrible artifacts.
Desktop? Desktop manager? What if you try a different desktop, or desktop manager?
20200402_100028.jpg I do a reverse search: ^Rls -l At this point the whole line is filled with a repeated quote character. Doing other things will repeat a substring of what the text holds. Hitting 'end' key will show the full text followed by the quotes. Very difficult to work when parts of the text disappear or get mangled.
Sounds like the input is being altered. Is it possible the keyboard is having issues? Could you try unplugging it and re-plugging it? How about memory, power supply? Heat? Is there dust buildup?
What happens in virtual consoles? Say Ctrl-Alt-F2. Are there problems with text changes or color?
How about with a different terminal in X? Problem still there?
20200402_094034.jpg Moving on, I grab the window and move it a bit. The whole window is filled with a pattern, here is is just a color pattern.
Again, this seems like the data is being mis-read, and color characteristics are being altered unintentionally and randomly.
If the window gets repainted it looks OK until I move it again. The only way I found so far to fix it is to restart X, so logout then login, not nice.
Does it stay fixed after the restart of X? Hardware errors should recur, while software errors will be fixed by reloading.