GNOME Bugzilla – Bug 786660
3.25.91: Unable to log in: invalid monitor configuration, Logical monitors not adjecent
Last modified: 2021-07-05 13:43:32 UTC
Created attachment 358188 [details] monitors.xml Ubuntu 17.10 Alpha I built gnome-settings-daemon, mutter and gnome-shell 3.25.91 for upload to Ubuntu. I rebooted and tried to log in with my new packages (I had been using 3.25.90 before). GDM showed up but logging in to GNOME didn't work. journal excerpt =============== Aug 22 21:12:31 gnome-shell[23153]: Ignoring invalid monitor configuration for LVDS1:LGD:0x02f8:0x00000000, VGA1:???:0x0000:0x00000000: Logical monitors not adjecent Aug 22 21:12:32 kernel: gnome-shell[23153]: segfault at 8 ip 00007f5a7c06ebd0 sp 00007ffdc85ce7c8 error 4 in libmutter-1.so.0.0.0[7f5a7c015000+13e000] Workaround ========== After moving or removing ~/.config/monitors.xml I was able to log in. I'm attaching a copy of my monitors.xml file that mutter 3.25.91 couldn't handle but worked fine with 3.25.90.
I believe I had copied my ~/.config/monitors.xml from one or two previous computers. Currently, I don't use any external monitors with my laptop.
Could you provide a backtrace? I can't reproduce any crash when using your monitors.xml, I only see the "not adjecent" error, then everything works anyway.
(In reply to Jonas Ådahl from comment #2) > Could you provide a backtrace? I can't reproduce any crash when using your > monitors.xml, I only see the "not adjecent" error, then everything works > anyway. Could you show me how to do that? Ubuntu's apport did not automatically catch a backtrace for gnome-shell/mutter.
(In reply to Jeremy Bicha from comment #3) > (In reply to Jonas Ådahl from comment #2) > > Could you provide a backtrace? I can't reproduce any crash when using your > > monitors.xml, I only see the "not adjecent" error, then everything works > > anyway. > > Could you show me how to do that? Ubuntu's apport did not automatically > catch a backtrace for gnome-shell/mutter. I don't know how to do it in Ubuntu. Maybe this page can help: https://wiki.ubuntu.com/Backtrace
GNOME is going to shut down bugzilla.gnome.org in favor of gitlab.gnome.org. As part of that, we are mass-closing older open tickets in bugzilla.gnome.org which have not seen updates for a longer time (resources are unfortunately quite limited so not every ticket can get handled). If you can still reproduce the situation described in this ticket in a recent and supported software version, then please follow https://wiki.gnome.org/GettingInTouch/BugReportingGuidelines and create a new ticket at https://gitlab.gnome.org/GNOME/mutter/-/issues/ Thank you for your understanding and your help.