Sebastian, Just turned off Xinerama (for a few minutes). For some reason, the system is unable to use both screens without Xinerama. Played with this a lot when I upgraded to 20.04 from 16.04 (worked nicely before upgrade). FWIW, cursor is a big X on second screen, but no background and no moving windows onto it.
Stan On Tue, May 10, 2022 at 11:52 AM Stan Tomlinson <s...@tomlinson.com> wrote: > Turned off COMPOSITE, and am getting the same reaction. > See attached Xorg.0.log > > On Tue, May 10, 2022 at 3:20 AM Sebastien Bacher < > 1972...@bugs.launchpad.net> wrote: > >> The Xorg log was sent via email and contains >> >> (WW) NVIDIA: The Composite and Xinerama extensions are both enabled, which >> (WW) NVIDIA: is an unsupported configuration. The driver will >> continue >> (WW) NVIDIA: to load, but may behave strangely. >> (WW) NVIDIA: Xinerama is enabled, so RandR has likely been disabled by the >> (WW) NVIDIA: X server. >> >> gnome-control-center should handle the situation better but that's a bit >> of a special graphical display configuration, did you try to do without >> xinerama? >> >> -- >> You received this bug notification because you are subscribed to the bug >> report. >> https://bugs.launchpad.net/bugs/1972037 >> >> Title: >> Stack Overflow - gnome-control-center >> >> Status in gnome-control-center package in Ubuntu: >> New >> >> Bug description: >> >> Program: gnome-control-center >> Installed version: 1:3.36.5-0ubuntu4 (ubuntu default download) >> OS: ubuntu 20.04.4 LTS >> GNOME Version: 3.36.8 (ubuntu default download) >> Windowing System: X11 >> Graphics: GeForce 8400GS/PCIe/SSE2 >> Driver: Using NVIDIA binary driver version 340.108 >> Source: download version from ubuntu >> >> Steps to reproduce: >> >> Reset GNOME settings with: >> dconf reset -f /org/gnome/control-center/ >> Open GNOME Settings with: >> /usr/bin/gnome-control-center >> Click on "Displays" and receive: >> Xlib: extension "RANDR" missing on display ":0". >> Xlib: extension "RANDR" missing on display ":0". >> Segmentation fault (core dumped) >> >> Repeated using gdb with package symbols. >> Output of "bt -full" in attachment (with a few comments). >> >> (Submitted to gnome.org, but they said it is out of date and not >> supported by them.) >> >> ProblemType: Bug >> DistroRelease: Ubuntu 20.04 >> Package: gnome-control-center 1:3.36.5-0ubuntu4 >> ProcVersionSignature: Ubuntu 5.4.0-100.113-generic 5.4.166 >> Uname: Linux 5.4.0-100-generic x86_64 >> NonfreeKernelModules: nvidia >> ApportVersion: 2.20.11-0ubuntu27.23 >> Architecture: amd64 >> CasperMD5CheckResult: skip >> CurrentDesktop: GNOME-Flashback:GNOME >> Date: Fri May 6 20:38:55 2022 >> InstallationDate: Installed on 2011-07-11 (3952 days ago) >> InstallationMedia: Ubuntu-Server 11.04 "Natty Narwhal" - Release amd64 >> (20110426) >> SourcePackage: gnome-control-center >> UpgradeStatus: Upgraded to focal on 2022-02-01 (94 days ago) >> >> To manage notifications about this bug go to: >> >> https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1972037/+subscriptions >> >> -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1972037 Title: Stack Overflow - gnome-control-center To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1972037/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
