Here's the xrandr. It looks like 0x0 is selected for display Virtual2 and maybe this is confusing g-c-c.
** Attachment added: "xrandr" https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1851189/+attachment/5302626/+files/xrandr -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-control-center in Ubuntu. https://bugs.launchpad.net/bugs/1851189 Title: gnome-control-center can't configure second virtualbox display Status in gnome-control-center package in Ubuntu: New Bug description: On a VirtualBox 6.0.14 host, with a fresh install of Ubuntu 19.10 and the virtualbox guest drivers installed, I can't configure a second display, although xrandr shows it to be present. Steps: 1. Install VirtualBox 2. Install Ubuntu 19.10 as a guest with 2 displays (note: at least 2048 MB RAM is required or the guest is chronically slow during installation; I gave the displays 32 MB RAM as well). 3. In the guest, install virtualbox guest drivers and reboot. 4. Run g-c-c and go to the Devices / Displays section. Expected result: I can choose to Join the displays, move them around with the mouse and Apply the new settings successfuly. Actual result: Display 2 is shown normally but Display 1 is just a number (see attached) - I can't move it around or Apply changes. ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: gnome-control-center 1:3.34.1-1ubuntu2 ProcVersionSignature: Ubuntu 5.3.0-18.19-generic 5.3.1 Uname: Linux 5.3.0-18-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.11-0ubuntu8 Architecture: amd64 Date: Mon Nov 4 11:49:05 2019 ProcEnviron: LANGUAGE=en_AU:en TERM=xterm-256color PATH=(custom, no user) LANG=en_AU.UTF-8 SHELL=/bin/bash SourcePackage: gnome-control-center UpgradeStatus: No upgrade log present (probably fresh install) modified.conffile..etc.apport.crashdb.conf: [modified] mtime.conffile..etc.apport.crashdb.conf: 2019-11-04T11:48:33.047928 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1851189/+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