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[Viktor Pal <1426887@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

To reproduce:
1.) Open VLC (or SMplayer or any app in fullscreen mode).
2.) Start watching a movie and go to fullscreen mode.
3.) Alt+tab to another open application
4.) Alt+tab back to VLC
After getting back to VLC you will see a white stripe on the top of the screen as on the attached screenshot.

I have tried this with other applications like Firefox and the default video player (Totem).
They produce a slightly different symptoms as they also have a white stripe on the left of the screen besides the top, but I would bet it is the same bug.
In Totem the white stripes are also blinking a bit.

I'm attaching 2 screenshots.
1.) After starting VLC where everything is okay.
2.) After alt+tab ing with VLC where the white stripe is already displayed.

I'm using gnome-session-flashback (gnome-panel) with metacity.
I'm not sure which of them is responsible for this or if one of them even is but they seem to be the best candidates.

I have also installed Xfce on the same machine and players started in
Xfce do not produce similar problems.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: metacity 1:2.34.13-0ubuntu4
ProcVersionSignature: Ubuntu 3.13.0-46.75-generic 3.13.11-ckt15
Uname: Linux 3.13.0-46-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.7
Architecture: amd64
CurrentDesktop: Unity
Date: Sun Mar  1 14:54:32 2015
SourcePackage: metacity
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: gnome-panel (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: metacity (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug trusty

** Attachment added: "after_starting_vlc_in_fullscreen.png"
   https://bugs.launchpad.net/bugs/1426887/+attachment/4331223/+files/after_starting_vlc_in_fullscreen.png

** Also affects: gnome-panel (Ubuntu)
   Importance: Undecided
       Status: New

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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to metacity in Ubuntu.
https://bugs.launchpad.net/bugs/1426887

Title:
  Full screen app has a white stripe on top after switching to another
  window

Status in gnome-panel package in Ubuntu:
  New
Status in metacity package in Ubuntu:
  New

Bug description:
  To reproduce:
  1.) Open VLC (or SMplayer or any app in fullscreen mode).
  2.) Start watching a movie and go to fullscreen mode.
  3.) Alt+tab to another open application
  4.) Alt+tab back to VLC
  After getting back to VLC you will see a white stripe on the top of the screen as on the attached screenshot.

  I have tried this with other applications like Firefox and the default video player (Totem).
  They produce a slightly different symptoms as they also have a white stripe on the left of the screen besides the top, but I would bet it is the same bug.
  In Totem the white stripes are also blinking a bit.

  I'm attaching 2 screenshots.
  1.) After starting VLC where everything is okay.
  2.) After alt+tab ing with VLC where the white stripe is already displayed.

  I'm using gnome-session-flashback (gnome-panel) with metacity.
  I'm not sure which of them is responsible for this or if one of them even is but they seem to be the best candidates.

  I have also installed Xfce on the same machine and players started in
  Xfce do not produce similar problems.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: metacity 1:2.34.13-0ubuntu4
  ProcVersionSignature: Ubuntu 3.13.0-46.75-generic 3.13.11-ckt15
  Uname: Linux 3.13.0-46-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.7
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Sun Mar  1 14:54:32 2015
  SourcePackage: metacity
  UpgradeStatus: No upgrade log present (probably fresh install)

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