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It seems that I install a new graphic cart AMD Radeon R7 240, it was blinking
at first i watch video then put it on full screen (especially in browser
chrome). it suddenly no response for any keys. even i press "Ctrl+alt+delete"
or try "Ctrl+alt+F2" to text mode.
then I search google and install amd's opencl driver to replace intel. but, it
just better then previous.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: mutter 3.36.9-0ubuntu0.20.04.1
ProcVersionSignature: Ubuntu 5.4.0-7634.38~1592497129~20.04~9a1ea2e-generic
5.4.41
Uname: Linux 5.4.0-7634-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.18
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Sun Aug 8 13:48:50 2021
InstallationDate: Installed on 2019-11-23 (623 days ago)
InstallationMedia: Ubuntu 18.04.2 LTS "Bionic Beaver" - Release amd64 (20190210)
SourcePackage: mutter
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 amdgpu apport-bug focal third-party-packages
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[amdgpu] Screen freeze then system without response
https://bugs.launchpad.net/bugs/1939221
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