[Bug 1808927] Re: On fullscreen mode, video playback is somewhat traslucent in Firefox

Tue Dec 18 07:32:40 UTC 2018

** Description changed:

  Description:

  *In Mozilla Firefox browser and when playing HTML5 fullscreen videos, elements on the Gnome 3 desktop (like floating windows) are somewhat still visible (video isn't 100 % opaque).
  *The issue occurs only when video is playing, not when paused. Transparency occurs mainly when displaying dark tones (like blues), but not black.
  *Tested with Youtube, Dailymotion and Vimeo videos.
  *Tested with official Ubuntu repository package and also with Snap package: issue occurs on both of them.
+ *chromium-browser package from Ubuntu repository also tested: issue isn't present.

  System and package details:

  uname -a
  Linux ***** 4.18.0-12-generic #13-Ubuntu SMP Wed Nov 14 15:17:05 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux

  lsb_release -rd
  Description:	Ubuntu 18.10
  Release:	18.10

  apt-cache policy firefox
  firefox:
-   Instalados: 64.0+build3-0ubuntu0.18.10.1
-   Candidato:  64.0+build3-0ubuntu0.18.10.1
-   Tabla de versión:
-  *** 64.0+build3-0ubuntu0.18.10.1 500
-         500 http://archive.ubuntu.com/ubuntu cosmic-updates/main amd64 Packages
-         500 http://archive.ubuntu.com/ubuntu cosmic-security/main amd64 Packages
-         100 /var/lib/dpkg/status
-      63.0+build1-0ubuntu1 500
-         500 http://archive.ubuntu.com/ubuntu cosmic/main amd64 Packages
+   Instalados: 64.0+build3-0ubuntu0.18.10.1
+   Candidato:  64.0+build3-0ubuntu0.18.10.1
+   Tabla de versión:
+  *** 64.0+build3-0ubuntu0.18.10.1 500
+         500 http://archive.ubuntu.com/ubuntu cosmic-updates/main amd64 Packages
+         500 http://archive.ubuntu.com/ubuntu cosmic-security/main amd64 Packages
+         100 /var/lib/dpkg/status
+      63.0+build1-0ubuntu1 500
+         500 http://archive.ubuntu.com/ubuntu cosmic/main amd64 Packages

  Summary:

  *What is expected to happen:
  Fullscreen HTML5 video should be 100 % opaque (desktop elements shouldn't be visible at all).

  *What happened instead:
- Desktop elements ares subtly still visible under Fullscreen HTML5 video, only when video is playing (not when paused) and mainly with dark tones, not with black.
+ Desktop elements are subtly still visible under Fullscreen HTML5 video, only when video is playing (not when paused) and mainly with dark tones, not with black.

  ProblemType: Bug
  DistroRelease: Ubuntu 18.10
  Package: firefox 64.0+build3-0ubuntu0.18.10.1
  ProcVersionSignature: Ubuntu 4.18.0-12.13-generic 4.18.17
  Uname: Linux 4.18.0-12-generic x86_64
  AddonCompatCheckDisabled: False
  ApportVersion: 2.20.10-0ubuntu13.1
  Architecture: amd64
  AudioDevicesInUse:
-  USER        PID ACCESS COMMAND
-  /dev/snd/controlC0:  julian     3065 F.... pulseaudio
+  USER        PID ACCESS COMMAND
+  /dev/snd/controlC0:  julian     3065 F.... pulseaudio
  BuildID: 20181207224759
  Channel: Unavailable
  CurrentDesktop: ubuntu:GNOME
  Date: Tue Dec 18 02:02:22 2018
  EcryptfsInUse: Yes
  Extensions: extensions.sqlite corrupt or missing
  ForcedLayersAccel: False
  IfupdownConfig:
-  # interfaces(5) file used by ifup(8) and ifdown(8)
-  auto lo
-  iface lo inet loopback
+  # interfaces(5) file used by ifup(8) and ifdown(8)
+  auto lo
+  iface lo inet loopback
  IncompatibleExtensions: Unavailable (corrupt or non-existant compatibility.ini or extensions.sqlite)
  InstallationDate: Installed on 2018-11-15 (32 days ago)
  InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.3)
  IpRoute:
-  default via 192.168.0.1 dev wlp2s0 proto dhcp metric 600 
-  169.254.0.0/16 dev wlp2s0 scope link metric 1000 
-  192.168.0.0/24 dev wlp2s0 proto kernel scope link src 192.168.0.37 metric 600
+  default via 192.168.0.1 dev wlp2s0 proto dhcp metric 600
+  169.254.0.0/16 dev wlp2s0 scope link metric 1000
+  192.168.0.0/24 dev wlp2s0 proto kernel scope link src 192.168.0.37 metric 600
  Locales: extensions.sqlite corrupt or missing
  PrefSources: prefs.js
  Profiles: Profile0 (Default) - LastVersion=64.0/20181207224759
  RunningIncompatibleAddons: False
  SourcePackage: firefox
  Themes: extensions.sqlite corrupt or missing
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 03/16/2016
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: GL552VW.218
  dmi.board.asset.tag: ATN12345678901234567
  dmi.board.name: GL552VW
  dmi.board.vendor: ASUSTeK COMPUTER INC.
  dmi.board.version: 1.0
  dmi.chassis.asset.tag: ATN12345678901234567
  dmi.chassis.type: 10
  dmi.chassis.vendor: ASUSTeK COMPUTER INC.
  dmi.chassis.version: 1.0
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrGL552VW.218:bd03/16/2016:svnASUSTeKCOMPUTERINC.:pnGL552VW:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnGL552VW:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
  dmi.product.family: GL
  dmi.product.name: GL552VW
  dmi.product.sku: ASUS-NotebookSKU
  dmi.product.version: 1.0
  dmi.sys.vendor: ASUSTeK COMPUTER INC.

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https://bugs.launchpad.net/bugs/1808927

Title:
  On fullscreen mode, video playback is somewhat traslucent in Firefox

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