Comment # 1 on bug 104421 from Jan Vlug

After a while, I saw also this log statement multiple times:
Dec 30 23:24:30 nyx kernel: nouveau 0000:23:00.0: Xwayland[5346]:
nv50cal_space: -16

An attempt to restart the gnome-shell with:
# killall -3 gnome-shell
had no effect.