Comment 30 for bug 1861395

@David - as far as I know, before reporting kernel issues, Ubuntu users are expected to try a repro with a mainline kernel. I've read (some of) the discussion in the Freedesktop bug report where people have proposed that various patches have possibly solved the problem, so I hit the mainline PPA and got the newest 5.4 :-). And it looked promising for a while.

Currently running 5.4.0-15-generic #18-Ubuntu from focal-proposed, and so far so good.