Hi,

steps to reproduce:

1) login to a gnome desktop instance
2) press fn + d to toggle privacy screen
3) suspend
4) resume

The TTY which previously has the user instance running will crash, killing all
applications in it. Switching to TTY1 (where the login manager runs) and logging
in just switches back to the TTY where gnome-shell segfaulted, so a reboot or
gdm3 restart is needed.

I was able to catch a coredump which I can't attach due to size. Happy to share
it if you're not able to reproduce. There is a similar bug report for Ubuntu:
https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/2085420

The segfault is in src/backends/native/meta-kms-impl-device.c:962.

Regards,
Lee

Can you get a backtrace from this core dump, with gnome-shell and mutter
debug symbols available? That's usually the most important information.

https://wiki.debian.org/HowToGetABacktrace

(I assume that reproducing this would require hardware with the privacy
screen feature?)

Thanks,
    smcv