Display freezes quite often, rendering the phone irresponsive

Since a couple of months (presumably after some upgrade), I experience frequent freezes of the display which lead to my Pinephone being irresponsive. I still can press the lock button and the display goes off, but when I press it again nothing comes up. I see the following messages in journalctl:

abr 23 14:07:43 host kernel: [drm:lima_sched_timedout_job] *ERROR* lima job timeout
abr 23 14:07:43 host kernel: lima 1c40000.gpu: pp task error 0 int_state=0 status=5
abr 23 14:07:43 host kernel: lima 1c40000.gpu: pp task error 1 int_state=0 status=5
abr 23 14:07:51 host systemd-logind[660]: Power key pressed short.
abr 23 14:07:51 host phosh-session[6314]: The XKEYBOARD keymap compiler (xkbcomp) reports:
abr 23 14:07:51 host phosh-session[6314]: > Warning:          Unsupported maximum keycode 708, clipping.
abr 23 14:07:51 host phosh-session[6314]: >                   X11 cannot support keycodes above 255.
abr 23 14:07:51 host phosh-session[6314]: Errors from xkbcomp are not fatal to the X server
abr 23 14:07:51 host gsd-xsettings[1189]: Failed to get current UI legacy scaling factor
abr 23 14:07:51 host gsd-xsettings[1189]: Failed to get current UI legacy scaling factor
abr 23 14:07:53 host systemd-logind[660]: Power key pressed short.
abr 23 14:07:54 host gsd-xsettings[1189]: Failed to get current UI legacy scaling factor
abr 23 14:07:54 host gsd-xsettings[1189]: Failed to get current UI legacy scaling factor
abr 23 14:07:58 host systemd-logind[660]: Power key pressed short.
abr 23 14:07:59 host gsd-xsettings[1189]: Failed to get current UI legacy scaling factor
abr 23 14:07:59 host gsd-xsettings[1189]: Failed to get current UI legacy scaling factor

I have the impression (but might be quite subjective) that it gets triggered specially when more than one finger touches the screen, but other than that I don't see any other correlation with other events.