Public bug reported: I'm running Xubuntu. I finally reported this problem to the Xfce group and received this response:
"As arandr/xrandr does not detect correctly your 2nd screen, this seems that it is not related directly to Xfce, but a bug in Xubuntu stack. Can you please open a bug on Xubuntu project if the issue is still present for you?" Thus this bug report. I've been running Xubuntu for years with two monitors, each running an independent xfce4 desktop -- i.e., configured without Xinerama. This has worked fine for every upgrade through 18.04. When upgrading to 18.10, something significant changed and the the second monitor (display :0.1) was disabled. After much reading and work, I have only been able to restore some extremely hobbled functionality. I am unable to get a second xfce4-desktop, panel or window manager running on the second screen. I have assembled detailed screenshots and command output at the following link: http://smallthoughts.com/xfce/xfce.html I'm using an NVIDIA Quadro K-4000 graphics card and no hardware changes were made between 18.04 and 18.10. The nvidia-settings tool reports both monitors active (as configured in /etc/X11/xorg.conf) but the xfce4-display-settings and aarandr tools each show only one display (although xrandr can be forced to report on the second display. See full documentation at the above link.) What changed in the latest release, and what needs to be done to get the second monitor running a second desktop once again? I have been struggling with this for many months now and it has severely impacted the use of my system. As a new release of Ubuntu in coming, I would appreciate it if this could be prioritized and addressed as quickly as possible. I will provide additional information upon request. P.S.: There is really no documentation available on running multiple desktops on separate screens when Xinerama is not used to tie the screens together into a single desktop. This is a common configuration and I would like to request that as part of the solution to this problem, the setup steps be documented and this multi-desktop configuration be made a standard part of the development and testing process for each Ubuntu release. 13-> lsb_release -rd Description: Ubuntu 18.10 Release: 18.10 ** Affects: ubuntu Importance: Undecided Status: New ** Tags: 18.10 desktop dual-screen xubuntu -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1822181 Title: Ubuntu 18.10 broke dual-screen dual-desktop configuration To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1822181/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
