Public bug reported: When the nvidia driver is installed, the screen turns off when trying to set some fractional scaling values like 150%. And it stays off even after rebooting and logging in again.
And from ssh I can see there's no current mode set anymore (just like in bug 1869750): $ xrandr Screen 0: minimum 8 x 8, current 960 x 600, maximum 16384 x 16384 DVI-I-0 disconnected (normal left inverted right x axis y axis) DVI-I-1 disconnected (normal left inverted right x axis y axis) DP-0 disconnected (normal left inverted right x axis y axis) DP-1 connected primary (normal left inverted right x axis y axis) 1920x1200 59.95 + 59.88 ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: mutter 3.36.1-3ubuntu2 ProcVersionSignature: Ubuntu 5.4.0-24.28-generic 5.4.30 Uname: Linux 5.4.0-24-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu27 Architecture: amd64 CasperMD5CheckResult: skip Date: Fri Apr 17 15:51:15 2020 InstallationDate: Installed on 2020-02-03 (73 days ago) InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Alpha amd64 (20200124) SourcePackage: mutter UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: gnome-control-center (Ubuntu) Importance: Undecided Status: New ** Affects: gnome-shell (Ubuntu) Importance: Undecided Status: New ** Affects: mutter (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug black-screen champagne focal nvidia xrandr-scaling ** Tags added: black-screen ** Also affects: gnome-shell (Ubuntu) Importance: Undecided Status: New ** Also affects: gnome-control-center (Ubuntu) Importance: Undecided Status: New ** Summary changed: - [nvidia] Screen turns off when trying to switch to fractional scaling values + [nvidia] Screen turns off when trying to set fractional scaling values -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to mutter in Ubuntu. https://bugs.launchpad.net/bugs/1873403 Title: [nvidia] Screen turns off when trying to set some fractional scaling values To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1873403/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs