Hi, Debian on Pi4 have disabled 3D acceleration, so it makes desktop slow and bugs. It can solve upgrade kernel to 5.10 from buster-backports or if you are on bullseye only upgrade.
Good luck, Josef 15. 7. 2021 20:50:46 pcr <p...@pcrt.us>: > Recently I flashed the 20200210 build of debian to a 128 GB A2 SanDisk > micro sd card and I have been using in in in my raspberry pi. I > recently lost my desktop to a crash, so I am temporarily relying on the > Pi. So far it pretty good, about as fast as my old i3 laptop; one bug, > however, is a black rectangle that appears on the middle of my screen > occasionally. It goes away if I right click-left click, or if I waggle > the mouse pointer over the black rectangle, so it remains usable. Ill > let you know how it goes.
