A little bit of debugging and investigating confirm what is in log
above:
libmutter cannot get a monitor and crashes here:
https://github.com/GNOME/mutter/blob/master/src/backends/meta-backend.c#L128-L133
primary =
meta_monitor_manager_get_primary_logical_monitor (monitor_manager);
meta_backend_warp_pointer (backend,
primary->rect.x + primary->rect.width / 2,
primary->rect.y + primary->rect.height / 2);
because 'primary' is not a valid pointer.
So,
1. This should be reported to gnome/mutter developers, so they check all their
pointers and terminate in clean way with meta_fatal("failed to get primary
monitor"); or something like that.
2. We have to understand, why libmutter fails to get primary logical monitor.
Does Xorg need some permissions?
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which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1672033
Title:
Xorg does not work in rootless mode on nvidia proprietary drivers
(GNOME)
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