Public bug reported:
The bug occurs with any XWayland application. I tried VSCode, Chrome,
Audacity, Darktable...
I have two monitors with a different DPI. One is 4K HiDPI monitor and
the second in LowDPI 2K monitor. I can setup 200% scale for a HiDPI
monitor and 100% scale for a LowDPI. All native gnome applications are
fine.
The bug: when I select LowDPI monitor as a primary, XWayland
applications stop scaling on a HiDPI monitor. They run 100% scale on
both monitors. If I select HiDPI monitor as the primary, XWayland
applications scales fine — 200% on the primary monitor and 100% on the
secondary.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: mutter 3.36.6-1ubuntu0.20.04.2
ProcVersionSignature: Ubuntu 5.4.0-52.57-generic 5.4.65
Uname: Linux 5.4.0-52-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.10
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Sat Nov 7 12:28:53 2020
InstallationDate: Installed on 2019-11-16 (356 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=ru_RU.UTF-8
SHELL=/bin/bash
SourcePackage: mutter
UpgradeStatus: Upgraded to focal on 2020-05-02 (189 days ago)
** Affects: mutter (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal third-party-packages wayland-session
** Attachment added: "LowDPI monitor is primary"
https://bugs.launchpad.net/bugs/1903383/+attachment/5432115/+files/%D0%A1%D0%BD%D0%B8%D0%BC%D0%BE%D0%BA%20%D1%8D%D0%BA%D1%80%D0%B0%D0%BD%D0%B0%20%D0%BE%D1%82%202020-11-07%2012-26-28.png
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https://bugs.launchpad.net/bugs/1903383
Title:
XWayland applications respect scale only if a scaled output is primary
on a mixed-scale setup
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