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 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1426887 Title: Full screen app has a white stripe on top after switching to another window To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-panel/+bug/1426887/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs