OK. There is still bug 1292398 open though. Sounds too closely related to keep separate from this one. The people in bug 1292398 have been using Gnome Shell since at least 2014 so they certainly would have hit this problem before the rest of us...
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1726538 Title: Dual monitor configuration not saved across logout / login Status in gnome-shell package in Ubuntu: Confirmed Bug description: System76 Galaga UltraPro laptop. Two monitors, one plugged into the DisplayPort and one plugged into HDMI. I use the Displays settings page to tell the system which monitor is on the right and which is on the left, and tell it to make the left monitor the primary one. All is well. Then I log out and log back in. Now the two monitors are reversed -- i.e., it thinks that the monitor on the right is on the left and vice versa -- and the right monitor (which, remember, it thinks is on the left) is the primary one. In short, it forgets the configuration I told it to use immediately before logging out. ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: gnome-shell 3.26.1-0ubuntu4 ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4 Uname: Linux 4.13.0-16-generic x86_64 ApportVersion: 2.20.7-0ubuntu3 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Mon Oct 23 14:55:09 2017 DisplayManager: gdm3 InstallationDate: Installed on 2017-05-19 (157 days ago) InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412) SourcePackage: gnome-shell UpgradeStatus: Upgraded to artful on 2017-10-20 (3 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1726538/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp