Judging by the syslog, it looks like the VM might have a broken clock. Similar to another bug from a couple of years ago which had the same result: Only the first frame gets displayed so it's a blank purple screen. In that case it was a faulty graphics driver.
Try booting with kernel parameter 'nomodeset'. -- 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/1945704 Title: gdm3 shows only purple color screen in virtualbox with default VBoxSVGA or VBoxVGA video drivers Status in gnome-shell package in Ubuntu: Confirmed Bug description: Using 20.04 LTS installed from mini.iso, upgraded to 21.10. Then installed Cinnamon desktop by `sudo apt-get install cinnamon*`. This is what I see on boot - see screenshot. --- Note the same happens on installation of regular Ubuntu 21.10 ISO. ProblemType: Bug DistroRelease: Ubuntu 21.10 Package: gdm3 41~rc-0ubuntu1 ProcVersionSignature: Ubuntu 5.13.0-16.16-generic 5.13.13 Uname: Linux 5.13.0-16-generic x86_64 ApportVersion: 2.20.11-0ubuntu69 Architecture: amd64 CasperMD5CheckResult: unknown Date: Fri Oct 1 00:04:53 2021 SourcePackage: gdm3 UpgradeStatus: Upgraded to impish on 2021-09-10 (20 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1945704/+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