Am Samstag, den 17.09.2016, 09:37 +0200 schrieb Michael Biebl: > Am 17.09.2016 um 01:09 schrieb Erik Tews: > > > > > After startup, gdm doesn't show up and just shows a grey screen. > > Looking at syslog reveals the reason: > > > > syslog:Sep 16 23:27:25 matte kernel: [ 172.983123] gnome- > > shell: segfault > > at 10 ip 00007f8e7c85d6c4 sp 00007ffd151d0a80 error 4 in > > libwacom.so.2.4.6[7f8e7 > > c85a000+9000] > > > > Since I haven't updated libwacom2 in the last 2 weeks, but gnome- > > shell was recently updated, I assume this is due to a problem in > > gnome-shell. > > > > There is also a temporary fix, just run: rmmod wacom, and then > > restart gdm, and you can use it again, of course without the > > touchscreen. > > > > Unfortunately, in upstream, I cannot see any kind of commit between > > 3.21.92 and 3.21.91 that might cause such a problem. > > Can you downgrade gnome-shell (and gnome-shell-common) to version > 3.21.91-2 (from testing), reboot and test if the problem is still > reproducible? > > If not, does downgrading libmutter0i, mutter-common, mutter to > 3.21.91-2 > fix the problem?
Just downgrading gnome-shell with the dependencies didn't help, but downgrading mutter and some related packages with gnome-shell solved the problem. Right now I have the following versions of those packages, everything else is on Debian unstable: ii gdm3 3.21.90-1 amd64 GNOME Display Manager ii gir1.2-gdm-1.0 3.21.90-1 amd64 GObject introspection data for the GNOME Display Manager ii gir1.2-mutter-3.0:amd64 3.21.91-2 amd64 GObject introspection data for Mutter ii gnome-session 3.20.2-1 all GNOME Session Manager - GNOME 3 session ii gnome-session-bin 3.20.2-1 amd64 GNOME Session Manager - Minimal runtime ii gnome-session-common 3.20.2-1 all GNOME Session Manager - common files ii gnome-shell 3.21.91-2 amd64 graphical shell for the GNOME desktop ii gnome-shell-common 3.21.91-2 all common files for the GNOME graphical shell ii gnome-shell-extensions 3.21.91-1 all Extensions to extend functionality of GNOME Shell ii libgdm1 3.21.90-1 amd64 GNOME Display Manager (shared library) ii libmutter0i:amd64 3.21.91-2 amd64 window manager library from the Mutter window manager ii linux-base 4.4 all Linux image base package ii mutter 3.21.91-2 amd64 lightweight GTK+ window manager ii mutter-common 3.21.91-2 all shared files for the Mutter window manager And gdm with gnome-shell works fine with wacom. I also looked at the upstream git commits for mutter, but didn't find an obvious one that causes the problem. Is there any nice way of getting a stack backtrace when gnome-shell launched by gdm crashes so that I can see how the call looks like and through which library it went? Erik
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