Hmm... To track things down further, I decided to install an older kernel to see if that fixes the problem. After rebooting into that old kernel, things work great again. So I started to "bisect" except that I haven't been able to reproduce the problem with a newer kernel either.
The upside is that the problem seems to be fixed. Not sure if "for good" or if it's still out there lurking, but I'll enjoy it while it lasts. Thanks for the help, in any case, === Stefan Stefan Monnier [2026-04-28 16:42:41] wrote: >> Don't know if my idea is relevant; A long time ago I had some weirdness with >> interrupts, where the mouse became extremely sluggish when that acted >> up. I think that one complained in dmesg. Maybe it is something to look at? > > Good idea, thanks. This said, I can't see any complaint in the dmesg > log that would seem related. OTOH, I noticed > > [ 6.428328] input: TPPS/2 IBM TrackPoint as > /devices/platform/i8042/serio1/serio2/input/input5 > > so I went to see that /sys node and tried > > echo on > > /sys/devices/platform/i8042/serio1/serio2/input/input5/power/control > > But that didn't seem to make any difference 🙁 > > > === Stefan
