I ran "journalctl --user" after the last flicker and this is the output from the time around the flicker
Sep 12 20:12:34 shadeball org.gnome.Shell.desktop[5959]: [1:1:0912/201234.077664:ERROR:child_process_sandbox_support_impl_linux.cc(81)] FontService unique font name matching request did not receive a response. Sep 12 20:12:34 shadeball org.gnome.Shell.desktop[5959]: [1:1:0912/201234.078033:ERROR:child_process_sandbox_support_impl_linux.cc(81)] FontService unique font name matching request did not receive a response. Sep 12 20:12:34 shadeball org.gnome.Shell.desktop[5959]: [1:1:0912/201234.084532:ERROR:child_process_sandbox_support_impl_linux.cc(81)] FontService unique font name matching request did not receive a response. Sep 12 20:12:34 shadeball org.gnome.Shell.desktop[5959]: [1:1:0912/201234.084847:ERROR:child_process_sandbox_support_impl_linux.cc(81)] FontService unique font name matching request did not receive a response. I can post the full multi-day output of journalctl --user if that would be useful to you all. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1827790 Title: Dell XPS 13 9380 - Screen brightness flashes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-settings-daemon/+bug/1827790/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
