Volume and brightness OSD make full-screen video flicker once they disappear

[Amr Ibrahim]

Steps:

1. Open a video in Totem, MPV or YouTube
2. Make the video full-screen
3. Press the keyboard keys to change volume or brightness to show an OSD
4. Notice the video flicker ONCE the OSD disappears (as if it destroys the graphics behind it for a second)
5. Keep trying to show an OSD, changing volume or brightness, until you see the bug because sometimes it doesn't happen the first time and not consistently

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: gnome-shell 3.28.3+git20190124-0ubuntu18.04.2
ProcVersionSignature: Ubuntu 4.18.0-18.19~18.04.1-generic 4.18.20
Uname: Linux 4.18.0-18-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.6
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Sun May 12 00:14:04 2019
DisplayManager: gdm3
InstallationDate: Installed on 2018-11-29 (163 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

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

[KC (kc12)]

I'm not able to reproduce this bug anymore since the final 19.10 release. Video works fine now, both in mpv and gnome-mpv.

[Launchpad Janitor (janitor)]

This bug was fixed in the package mutter - 3.36.0-2ubuntu1

---------------
mutter (3.36.0-2ubuntu1) focal; urgency=medium

  * Merge with debian. Remaining changes:
    + debian/control:
      - Update VCS flags to point to ubuntu salsa branch
    + debian/gbp.conf: update branch to point to ubuntu/master
    + debian/patches/x11-Add-support-for-fractional-scaling-using-Randr.patch:
      - X11: Add support for fractional scaling using Randr
  * d/p/clutter-master-clock-default-Sync-timelines-to-hardware-v.patch:
    - Improves smoothness and reduce input-to-output latency
      levels (LP: #1862308)
  * debian/libmutter-6-0.symbols:
    - Update as per background mipmap levels patch symbol addition
  * Ubuntu bugs resolved since 3.35.91-1ubuntu1:
    - Higher than necessary CPU usage on mouse movement (LP: #1848951)
    - No mouse cursor drawn for radeon in Wayland sessions (LP: #1867080)
    - Restarting displays apps running on other workspaces (LP: #1819890)
    - Volume/brightness OSD make fullscreen video flicker (LP: #1828697)

mutter (3.36.0-2) experimental; urgency=medium

  * control: Build against gnome-desktop 3.36 and break old gnome-shell. So we
    get dependencies on libgnome-desktop-3-19. Otherwise we get two different
    versions of gnome-desktop loaded into GNOME Shell, which crashes. Break
    old gnome-shell for the inverse reason - it needs to be upgraded otherwise
    we get the mismatch the other way around.

mutter (3.36.0-1) experimental; urgency=medium

  * New upstream release
    + Fix placement of popup windows in multi-monitor setups
    + Fix invisible mouse cursor on some hardware
    + Updated translations

mutter (3.35.92-1) experimental; urgency=medium

  * New upstream release
    + Add side channel for starting required X11 services
    + Allow remote desktop services to inhibit animations
    + Avoid flicker when (un)redirecting windows
    + Fix clipping glitches in long text entries
    + Fix visibility of initially hidden windows
    + Implement scaled/transformed hardware cursors
    + Let BindConstraints update the preferred size
    + Make check-alive timeouts configurable
    + Make each stage view correspond to a single CRTC
    + Make Xwayland startup asynchronous
    + Ping windows on every window focus
    + Remove overhead from hot code paths
    + Support synchronized wayland popup moving
    + Update screen-cast code to PipeWire 0.3 API
    + Use DMA buffers for screencasting if possible
  * d/p/*: Rebase
  * rules: Disable remote-desktop temporarily. This now requires pipewire 0.3
    which is not packaged yet and needs to be worked on
  * control: Bump wayland-protocols dep to 1.19 per meson.build
  * debian/libmutter-6-0.symbols: Add new symbols for this release. One symbol
    which was introduced in .90 was dropped; -6's ABI is not stable yet.

 -- Marco Trevisan (Treviño) <email address hidden> Thu, 19 Mar 2020 15:51:05 +0000