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
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https://bugs.launchpad.net/bugs/1873403
Title:
[nvidia] Screen turns off when trying to set some fractional scaling
values
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