Public bug reported:
After upgrading from ubuntu-18.04 to 20.04 I noticed that selecting text
via shift-rightarrow in any app (gedit, chrome, firefox) makes X11 stop
updating all apps' window contents while gnome-shell jumps to 100% cpu
in top.
This is on an idle DELL e7440 laptop (i5-4210U with 8 GB of RAM) and a
fresh ubuntu install.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: gnome-shell 3.36.4-1ubuntu1~20.04.2
ProcVersionSignature: Ubuntu 5.4.0-45.49-generic 5.4.55
Uname: Linux 5.4.0-45-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.8
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Fri Sep 4 15:44:00 2020
DisplayManager: gdm3
InstallationDate: Installed on 2020-08-26 (9 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
RelatedPackageVersions: mutter-common 3.36.4-0ubuntu0.20.04.2
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: gnome-shell (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug focal
** Attachment added: "screen recording of bug reproduction"
https://bugs.launchpad.net/bugs/1894225/+attachment/5407630/+files/gnome-shell-cpu-3.ogv
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https://bugs.launchpad.net/bugs/1894225
Title:
Blocked UI and 100% cpu in gnome-shell when selecting text
Status in gnome-shell package in Ubuntu:
New
Bug description:
After upgrading from ubuntu-18.04 to 20.04 I noticed that selecting
text via shift-rightarrow in any app (gedit, chrome, firefox) makes
X11 stop updating all apps' window contents while gnome-shell jumps to
100% cpu in top.
This is on an idle DELL e7440 laptop (i5-4210U with 8 GB of RAM) and a
fresh ubuntu install.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: gnome-shell 3.36.4-1ubuntu1~20.04.2
ProcVersionSignature: Ubuntu 5.4.0-45.49-generic 5.4.55
Uname: Linux 5.4.0-45-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.8
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Fri Sep 4 15:44:00 2020
DisplayManager: gdm3
InstallationDate: Installed on 2020-08-26 (9 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
RelatedPackageVersions: mutter-common 3.36.4-0ubuntu0.20.04.2
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)
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