Intel graphic card - Optiplex killed with an update :-)

[ugnvs]

Please have a look at

Compiz as windows manager leads to empty desktop and missing menu bar (Wobbly windows wanted)

Might be late to the party. Going to Startup Applications, try disabling 'picom' (unchecking worked). This seemed to fix it for me. Running Ubuntu MATE 24.04.1 My guess is that compiz gets started, and then picom, which leads to both fighting as window manager. Hopefully that helps someone!

and linked topics. Hopefully that info might help.