Ubuntu
gnome-shell package

21.04 Multi-Monitor Desktop Click & Drag Issues

Bug #1927159 reported by craig-dods on 2021-05-04

This bug report is a duplicate of: Bug #1923347: Selecting an area on the desktop is broken on multi-monitor setups in X11. Edit Remove

This bug affects 1 person

Affects		Status	Importance	Assigned to	Milestone
	gnome-shell (Ubuntu)	New	Undecided	Unassigned

Bug Description

Hello,

I've got two displays set up in "Join Displays" mode, where screen 1 is above screen 2

When both monitors are enabled, the "Click and Drag" area on the desktop (and only the desktop!) is wrong. However, when one monitor is disabled, click & drag behaves properly.

When I depress the mouse on the bottom screen, the point I click on to start the 'square of selection' is correct, but the bottom left automatically starts 1000~ pixels (or more) below where I click.

Strangely, on the top monitor, the behaviour is different and the right 'x' coordinate is moved to the right about 700~ pixels

E.g in the picture below (top monitor), I clicked on the top right of the edge of the volcano, but it automatically added another selection point to the right of it.

ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: gnome-shell 3.38.4-1ubuntu2
ProcVersionSignature: Ubuntu 5.11.0-16.17-generic 5.11.12
Uname: Linux 5.11.0-16-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu65
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Tue May 4 16:51:44 2021
DisplayManager: gdm3
InstallationDate: Installed on 2018-07-11 (1028 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_CA.UTF-8
SHELL=/bin/bash
RelatedPackageVersions: mutter-common 3.38.4-1ubuntu2
SourcePackage: gnome-shell
UpgradeStatus: Upgraded to hirsute on 2021-05-04 (0 days ago)

Tags:

Revision history for this message

craig-dods (craig-dods) wrote on 2021-05-04:

Screenshot of behaviour Edit (450.5 KiB, image/png)
Dependencies.txt Edit (21.5 KiB, text/plain; charset="utf-8")
GsettingsChanges.txt Edit (2.2 KiB, text/plain; charset="utf-8")
ProcCpuinfoMinimal.txt Edit (1.4 KiB, text/plain; charset="utf-8")
ShellJournal.txt Edit (413.6 KiB, text/plain; charset="utf-8")
monitors.xml.txt Edit (4.6 KiB, text/plain; charset="utf-8")

Revision history for this message

Daniel van Vugt (vanvugt) wrote on 2021-05-05:

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 1923347, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.