These warnings are output: al@al-xfce:~$ xfce4-display-settings
(xfce4-display-settings:2148): xfce4-display-settings-CRITICAL **: xfce_randr_mode_width: assertion 'mode != NULL' failed (xfce4-display-settings:2148): xfce4-display-settings-CRITICAL **: xfce_randr_mode_height: assertion 'mode != NULL' failed Segmentation fault (core dumped) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1665048 Title: xfce4-display-settings crashed with SIGSEGV in g_closure_invoke() To manage notifications about this bug go to: https://bugs.launchpad.net/xfce4-settings/+bug/1665048/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs