Screen tearing on Firefox when watching a video or scrolling down a webpage with a lot of text.
Steps to reproduce video screen tearing
1. Open Firefox browser on and go to Youtube
2. Select a video but I recommend a screen tearing video test
3. View the whole video and screen tearing occurs.
Steps to reproduce scroll tearing
1. Open a webpage on Firefox that has a lot of text like a Wiki
2. Scroll down the page and tearing is seen when scrolling
Tried recording the screen with Kazam to illustrate the issue but it does not record the screen tearing. Tested on Chromium but no screen tearing
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: firefox 75.0+build3-0ubuntu1
ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
Uname: Linux 5.4.0-26-generic x86_64
AddonCompatCheckDisabled: False
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC1: tony 1840 F.... pulseaudio
/dev/snd/controlC0: tony 1840 F.... pulseaudio
BuildID: 20200403170909
CasperMD5CheckResult: skip
Channel: Unavailable
CurrentDesktop: ubuntu:GNOME
Date: Mon Apr 27 09:33:26 2020
DefaultProfileExtensions: extensions.sqlite corrupt or missing
DefaultProfileIncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite)
DefaultProfileLocales: extensions.sqlite corrupt or missing
DefaultProfilePrefErrors: Unexpected character ',' before close parenthesis @ /usr/lib/firefox/omni.ja:greprefs.js:733
DefaultProfileThemes: extensions.sqlite corrupt or missing
ForcedLayersAccel: False
InstallationDate: Installed on 2020-04-27 (0 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
IpRoute:
default via 192.168.0.1 dev wlo1 proto dhcp metric 600
169.254.0.0/16 dev wlo1 scope link metric 1000
192.168.0.0/24 dev wlo1 proto kernel scope link src 192.168.0.32 metric 600
Profile0Extensions: extensions.sqlite corrupt or missing
Profile0IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite)
Profile0Locales: extensions.sqlite corrupt or missing
Profile0PrefErrors: Unexpected character ',' before close parenthesis @ /usr/lib/firefox/omni.ja:greprefs.js:733
Profile0PrefSources: prefs.js
Profile0Themes: extensions.sqlite corrupt or missing
Profiles:
Profile1 (Default) - LastVersion=None/None (Out of date)
Profile0 - LastVersion=75.0/20200403170909
RunningIncompatibleAddons: False
SourcePackage: firefox
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/06/2019
dmi.bios.vendor: Insyde
dmi.bios.version: F.65
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: 8444
dmi.board.vendor: HP
dmi.board.version: 67.33
dmi.chassis.asset.tag: Chassis Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnInsyde:bvrF.65:bd12/06/2019:svnHP:pnHPLaptop15-bs1xx:pvrType1ProductConfigId:rvnHP:rn8444:rvr67.33:cvnHP:ct10:cvrChassisVersion:
dmi.product.family: 103C_5335KV HP Notebook
dmi.product.name: HP Laptop 15-bs1xx
dmi.product.sku: 4UL47EA#BH5
dmi.product.version: Type1ProductConfigId
dmi.sys.vendor: HP
Is this in a default X11 session, or a Wayland one?
If the former, this is probably a duplicate of bug #1754284.