I've tested this using Ubuntu 14.04 x64 and FF 33d.0b1(BUild Id: 20140903133924).
The turn screen off enters on the set time(Ubuntu 14.04 doesn’t ship with any screen savers, just a black screen that appears when your system is idle) when playing a youtube video on fullscreen. The same is happening when playing a video without going to fullscreen. I even installed XScreenSaver to see if the issue is reproducible using it instead of gnome screensaver and it is reproducible with XScreenSaver. Is the fix not suppose to work for the turning off screen feature from Ubuntu? or is this an issue with the fix? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/434476 Title: screensaver starts while playing HTML5 videos To manage notifications about this bug go to: https://bugs.launchpad.net/firefox/+bug/434476/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs