> If your card is that old, shouldn't the nouveau drivers be quite full-featured anyway?

Normally they would probably be, but it looks like my ultra-wide screen is too much to handle for those drivers.

> you may also want to run a Bookworm kernel with a full Trixie userspace.

Good idea indeed. But at this point I'm afraid of borking everything again. I'll just wait for the replacement card I ordered and hope it doesn't make things worse.