imac

I have more late 2011 21.5 inch iMac computers at my school than I know what to do with, so I decided to convert 2 into servers by removing all unnecessary hardware (Wi-Fi card, bluetooth card, antennas, CD drive, useless IR receiver, etc.) and installed Ubuntu Server 24.04 LTS to run a...

Who can tell me how I can get the drivers of an AMD/ATI mobility radeon hd 4850 for an imac 11.1?. The ati drivers work I get the screen black. Thanks a lot.