Oh, in case it is of any interest, laptop beeped a moment ago and printed on all terminals: Laicolasse:~ # Message from syslogd@Laicolasse at Apr 4 09:58:05 ... kernel:[10684.097050][ C0] Uhhuh. NMI received for unknown reason 2c on CPU 0. Message from syslogd@Laicolasse at Apr 4 09:58:05 ... kernel:[10684.097056][ C0] Dazed and confused, but trying to continue Laicolasse:~ # Laicolasse:~ # uname -a Linux Laicolasse.valinor 6.2.8-lp154.3.gc9a94ac-default #1 SMP PREEMPT_DYNAMIC Tue Mar 28 07:54:15 UTC 2023 (c9a94ac) x86_64 x86_64 x86_64 GNU/Linux Laicolasse:~ # grep "NAME=\|ID=" /etc/os-release NAME="openSUSE Leap" ID="opensuse-leap" VERSION_ID="15.4" PRETTY_NAME="openSUSE Leap 15.4" CPE_NAME="cpe:/o:opensuse:leap:15.4" Laicolasse:~ # otherwise, running fine.