Thank you for reporting this bug to Ubuntu. Ubuntu 17.10 (artful) reached end-of-life on July 19, 2018.
See this document for currently supported Ubuntu releases: https://wiki.ubuntu.com/Releases We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in and change the bug status to Confirmed. ** Changed in: mutter (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1714908 Title: Cannot use multiple monitors; xrandr causes segfault at 1a0 ip 00007f54021c9836 sp 00007fff 994f5b00 error 4 in libmutter-1.so.0.0.0[7f54020e5000+13f000] Status in mutter package in Ubuntu: Incomplete Bug description: Attempting to use multiple monitors from the graphical interface results in nothing happening: (gnome-control-center:8910): display-cc-panel-WARNING **: Error applying configuration: GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: Method ApplyConfiguration is not implemented on interface org.gnome.Mutter.DisplayConfig Attempting to set up the same from xrandr causes segmentation faults in libmutter: $ sudo dmesg --console-on $ xrandr --output eDP-1 --off --output DP-1-2 --mode 1920x1080 --rotate left --pos 2160x0 --output DP-1-1 --pos 0x0 --mode 1920x1080 --rotate left --output DP-1-3 --pos 1080x0 --mode 1920x1080 --rotate left --verbose --scale 1x1 screen 0: 3240x1920 858x508 mm 95.92dpi crtc 0: 1920x1080 60.00 +1080+0 "DP-1-3" crtc 1: 1920x1080 60.00 +2160+0 "DP-1-2" crtc 2: 1920x1080 60.00 +0+0 "DP-1-1" [Sep 4 11:07] gnome-shell[3603]: segfault at 8 ip 00007f79e651bda0 sp 00007ffd48c3d1b8 error 4 in libmutter-1.so.0.0.0[7f79e64c2000+13f000] It should be noted that all monitors are working as expected during boot (e.g. while typing my HDD unlock password) Regrettably the segfault information changes every time and apport doesn't seem able to capture reports for it. xfce sessions from lightdm start regularly and can use external monitors regularly. ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: libmutter-1-0 3.25.91+20170902~ce515c5-1ubuntu1 ProcVersionSignature: Ubuntu 4.12.0-12.13-generic 4.12.8 Uname: Linux 4.12.0-12-generic x86_64 ApportVersion: 2.20.7-0ubuntu1 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Mon Sep 4 11:02:06 2017 EcryptfsInUse: Yes InstallationDate: Installed on 2017-08-14 (20 days ago) InstallationMedia: Ubuntu 17.10 "Artful Aardvark" - Alpha amd64 (20170814) SourcePackage: mutter UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1714908/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
