Screen tearing in Firefox on Wayland

[Artyom Pozharov]

Details here: https://photos.app.goo.gl/9kA7R6KqNaSsn9CB8

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: firefox 68.0.1+build1-0ubuntu2
ProcVersionSignature: Ubuntu 5.2.0-8.9-generic 5.2.0
Uname: Linux 5.2.0-8-generic x86_64
ApportVersion: 2.20.11-0ubuntu7
Architecture: amd64
BuildID: 20190719083815
CurrentDesktop: ubuntu:GNOME
Date: Mon Aug 5 13:36:32 2019
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:1141
DefaultProfileThemes: extensions.sqlite corrupt or missing
InstallationDate: Installed on 2019-08-04 (0 days ago)
InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Alpha amd64 (20190802)
Profiles:
 Profile1 (Default) - LastVersion=None/None (Out of date)
 Profile0 - LastVersion=68.0.1/20190719083815 (In use)
SourcePackage: firefox
UpgradeStatus: No upgrade log present (probably fresh install)

[Olivier Tilloy (osomon)]

The tearing isn't obvious to my untrained eye, nor can I observe it locally when testing in VMs.
I tested both X11 and Wayland, by scrolling up and down a long wikipedia page.

Can you provide details about your graphics card and driver?

Can you test an upstream build (download and unpack https://www.mozilla.org/firefox/download/thanks/) and confirm whether it's similarly affected? If so, can you file an upstream bug at https://bugzilla.mozilla.org/enter_bug.cgi#h=dupes%7CFirefox and share the link to it here?

Thanks!

[Artyom Pozharov (artyom-pozharov)]

I use Intel HD 500 video card and default free driver, that is included in
Ubuntu GNU/Linux

ср, 7 авг. 2019 г., 13:10 Olivier Tilloy <email address hidden>:

> The tearing isn't obvious to my untrained eye, nor can I observe it
> locally when testing in VMs.
> I tested both X11 and Wayland, by scrolling up and down a long wikipedia
> page.
>
> Can you provide details about your graphics card and driver?
>
> Can you test an upstream build (download and unpack
> https://www.mozilla.org/firefox/download/thanks/) and confirm whether
> it's similarly affected? If so, can you file an upstream bug at
> https://bugzilla.mozilla.org/enter_bug.cgi#h=dupes%7CFirefox and share
> the link to it here?
>
> Thanks!
>
> ** Changed in: firefox (Ubuntu)
> Status: New => Incomplete
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1838965
>
> Title:
> Screen tearing in Firefox on Wayland
>
> Status in firefox package in Ubuntu:
> Incomplete
>
> Bug description:
> Details here: https://photos.app.goo.gl/9kA7R6KqNaSsn9CB8
>
> ProblemType: Bug
> DistroRelease: Ubuntu 19.10
> Package: firefox 68.0.1+build1-0ubuntu2
> ProcVersionSignature: Ubuntu 5.2.0-8.9-generic 5.2.0
> Uname: Linux 5.2.0-8-generic x86_64
> ApportVersion: 2.20.11-0ubuntu7
> Architecture: amd64
> BuildID: 20190719083815
> CurrentDesktop: ubuntu:GNOME
> Date: Mon Aug 5 13:36:32 2019
> 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:1141
> DefaultProfileThemes: extensions.sqlite corrupt or missing
> InstallationDate: Installed on 2019-08-04 (0 days ago)
> InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Alpha amd64 (20190802)
> Profiles:
> Profile1 (Default) - LastVersion=None/None (Out of date)
> Profile0 - LastVersion=68.0.1/20190719083815 (In use)
> SourcePackage: firefox
> UpgradeStatus: No upgrade log present (probably fresh install)
>
> To manage notifications about this bug go to:
>
> https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1838965/+subscriptions
>

[Artyom Pozharov (artyom-pozharov)]

User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) snap Chromium/76.0.3809.87 Chrome/76.0.3809.87 Safari/537.36

Steps to reproduce:

Details here: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/1838965

[Release-mgmt-account-bot (release-mgmt-account-bot)]

[Bugbug](https://github.com/mozilla/bugbug/) thinks this bug should belong to this component, but please revert this change in case of error.

[Stransky (stransky)]

I think you mean slow scrolling here instead of video playback tearing, right?

[Artyom Pozharov (artyom-pozharov)]

I mean tearing appears with scrolling instead of video playback tearing

чт, 5 сент. 2019 г. в 02:50, Stransky <email address hidden>:

> I think you mean slow scrolling here instead of video playback tearing,
> right?
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1838965
>
> Title:
> Screen tearing in Firefox on Wayland
>
> Status in Mozilla Firefox:
> New
> Status in firefox package in Ubuntu:
> Incomplete
>
> Bug description:
> Details here: https://photos.app.goo.gl/9kA7R6KqNaSsn9CB8
>
> ProblemType: Bug
> DistroRelease: Ubuntu 19.10
> Package: firefox 68.0.1+build1-0ubuntu2
> ProcVersionSignature: Ubuntu 5.2.0-8.9-generic 5.2.0
> Uname: Linux 5.2.0-8-generic x86_64
> ApportVersion: 2.20.11-0ubuntu7
> Architecture: amd64
> BuildID: 20190719083815
> CurrentDesktop: ubuntu:GNOME
> Date: Mon Aug 5 13:36:32 2019
> 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:1141
> DefaultProfileThemes: extensions.sqlite corrupt or missing
> InstallationDate: Installed on 2019-08-04 (0 days ago)
> InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Alpha amd64 (20190802)
> Profiles:
> Profile1 (Default) - LastVersion=None/None (Out of date)
> Profile0 - LastVersion=68.0.1/20190719083815 (In use)
> SourcePackage: firefox
> UpgradeStatus: No upgrade log present (probably fresh install)
>
> To manage notifications about this bug go to:
> https://bugs.launchpad.net/firefox/+bug/1838965/+subscriptions
>

[Artyom Pozharov (artyom-pozharov)]

If I enable layers.acceleration.force-enabled in the flags, tearing will disappear.

[Artyom Pozharov (artyom-pozharov)]

(In reply to Martin Stránský [:stransky] from comment #2)
> I think you mean slow scrolling here instead of video playback tearing, right?

I mean tearing during thr scrolling here instead of video playback tearing

[Stransky (stransky)]

As Wayland is run or recent EGL stack / Gtk versions and compositors we should enable GL compositor by default at least for some subset of hardware - Intel and AMD gfx cards and gnome-shell compositor.

Gnome-shell itself uses EGL backend (composites to EGL textures) so GL is guaranteed to work there. It may also help with transition to WebRenderer.

KDE/Sway may be added later after some tests.

[Stransky (stransky)]

Created attachment 9099847
enable-gl-default-wayland.patch

Let's wait to 72 with it.

[Stransky (stransky)]

That's not point to enable GL compositor, better to go directly for WebRedner which works much better and does not suffer from Bug 1587788. Let's use this bug to track various Wayland/GL related bugs instead.

[dev3java (dev3java)]

I confirm what this person said.

[Michel Dänzer (michel-daenzer)]

Are you enabling the native Wayland backend via the environment variable `MOZ_ENABLE_WAYLAND=1` (or `GDK_BACKEND=wayland`)?

If not, this is probably an Xwayland issue, possibly fixed in the upstream xserver 1.20.7 release (or in the upcoming 1.20.8 release).

[Aitor Pazos (aitorpazos)]

I am seeing this as well in OpenSUSE Tumbleweed having `GDK_BACKEND=wayland` on a Lenovo Thinkpad X1 Yoga 3rd gen:
```
00:00.0 Host bridge [0600]: Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers [8086:5914] (rev 08)
00:02.0 VGA compatible controller [0300]: Intel Corporation UHD Graphics 620 [8086:5917] (rev 07)
```
Software:
- kwin 5.19.2
- Mozilla Firefox 78.0.1

[W-jan-k (w-jan-k)]

(In reply to mail from comment #5)
If you open about:support, what does "Compositing" say?
It is normal that the Basic compositor (software rendering) shows tearing. Please open about:config, set gfx.webrender.all to true and restart Firefox to enable OpenGL rendering. WebRender is in the process of becoming enabled by default on Linux.

[W-jan-k (w-jan-k)]

*** This bug has been marked as a duplicate of bug 1587060 ***

[W-jan-k (w-jan-k)]

*** Bug 1572866 has been marked as a duplicate of this bug. ***

[Aitor Pazos (aitorpazos)]

Looks much better now, thanks!!
`Compositing` was set to `Basic` indeed. Turning the OpenGL rendering solved the issues for me.

[Aitor Pazos (aitorpazos)]

One issue I noticed even with `GDK_BACKEND=wayland` and `gfx.webrender.all=true` set is that the "Master Password" entry modal dialog is not rendered properly. It is rendered blank.
Reported as a separate bug in https://bugzilla.mozilla.org/show_bug.cgi?id=1652310

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Daniel van Vugt (vanvugt)]

Thank you for reporting this bug to Ubuntu.

Ubuntu 19.10 (eoan) reached end-of-life on July 17, 2020.

See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test. If you then find the bug is still present in the newer Ubuntu version, please add a comment here telling us which new version it is in.