For about a week or two (can't quite remember exactly when it started) my system has started randomly freezing once every day or two: completely unresponsive to anything other than a hard reboot, and the system gets very hot with the fans running full speed. It mostly occurs immediately prior to entering sleep, but also rarely (as in once, today) froze when just sitting there not doing anything. /var/log/kernel.log is filled with something akin to below, repeated hundreds of times per second—in a freshly-rotated kernel.log, it grew to 500 MiB over the course of about 5–10 minutes from the system freeze to when I noticed it was frozen. This was taken from the last set of logspam before I hard rebooted the system, so it seems likely to me that the “No installed handler for fixed event - SleepButton” message was from me holding the power button before the hard shutdown circuitry kicked in.
I'm on a 2015 MacBook Pro with OpenRC and using KDE. The issue occurs on both linux (6.5.5.artix1-1) and linux-lts (6.1.54-1), but notably did not occur on linux-lts until recently, it started happening on both kernels simultaneously.
Oct 3 18:09:05 GLaDOS kernel: ACPI Error: No installed handler for fixed event - PM_Timer (0), disabling (20230331/evevent-255)
Oct 3 18:09:05 GLaDOS kernel: ACPI Error: No installed handler for fixed event - SleepButton (3), disabling (20230331/evevent-255)
Oct 3 18:09:05 GLaDOS kernel: ACPI Error: Could not disable RealTimeClock events (20230331/evxfevnt-243)
Oct 3 18:09:05 GLaDOS kernel: ACPI Error: No handler or method for GPE 00, disabling event (20230331/evgpe-839)
Oct 3 18:09:05 GLaDOS kernel: ACPI Error: No handler or method for GPE 01, disabling event (20230331/evgpe-839)
Oct 3 18:09:05 GLaDOS kernel: ACPI Error: No handler or method for GPE 02, disabling event (20230331/evgpe-839)
Oct 3 18:09:05 GLaDOS kernel: ACPI Error: No handler or method for GPE 03, disabling event (20230331/evgpe-839)
Oct 3 18:09:05 GLaDOS kernel: ACPI Error: No handler or method for GPE 04, disabling event (20230331/evgpe-839)
Oct 3 18:09:05 GLaDOS kernel: ACPI Error: No handler or method for GPE 05, disabling event (20230331/evgpe-839)
Oct 3 18:09:05 GLaDOS kernel: ACPI Error: No handler or method for GPE 11, disabling event (20230331/evgpe-839)
Oct 3 18:09:05 GLaDOS kernel: ACPI Error: No handler or method for GPE 12, disabling event (20230331/evgpe-839)
Oct 3 18:09:05 GLaDOS kernel: ACPI Error: No handler or method for GPE 13, disabling event (20230331/evgpe-839)