Public bug reported:
After an upgrade with focal-proposed this morning, I am unable to set
any scaling for any of my monitors without the monitor turning blank for
15 seconds and reverting to 100% scaling.
I am using X11 with gnome and proprietary nvidia drivers on Focal. I
have 3 monitors attached, all 4K, and my usual setup is to enable
fractional scaling, and set all 3 monitors to 150% scaling.
Now however, I cannot change the monitors to use any scaling, and even
if I disconnect 2 of the monitors to only have a single monitor I still
cannot use scaling.
Finally note I am just using the Settings window, I haven't fiddled with
xrandr at all manually.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: mutter 3.36.0-2ubuntu1
ProcVersionSignature: Ubuntu 5.4.0-20.24-generic 5.4.27
Uname: Linux 5.4.0-20-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair nvidia_modeset
nvidia
ApportVersion: 2.20.11-0ubuntu21
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Wed Mar 25 11:24:05 2020
InstallationDate: Installed on 2019-07-05 (264 days ago)
InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: mutter
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: mutter (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
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https://bugs.launchpad.net/bugs/1869042
Title:
all monitor scaling fails due to overlapping monitors
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