Let me see... I can't find that "System Settings/General/Look and feel/Appearence" menu, remeber however this is KDE and maybe your are talking about Ubuntu on Gnome. Under System Settings/General/Appearence are many, many options which don't seem to be related, nor I do think they are causing the troubling here (Widget style is Oxygen, by the way). But... under "System Settings/General/Look and feel/Desktop/Desktop Effects" is the plugin I signaled before (good shot!). I disable "All desktop effects", Apply, and... bingo! Now I can watch video streams without the gray squared area appearing in front of everything (however with effects turned-off, obviously). The effects I had active were: -Zoom -Logout -Present Windows -Dialog parent -Login -Minimize animation -Shadow Translucency -Fade -Box switch -Desktop grid -Taskbar thumbnails ...and the rest were inactive.
There is yet another observed behaviour which may be realted: when I switch user X sessions and go back to the one that raised the gray square, I can't get to see the login popup. It is there, however it does not show (screen is all black). Sometimes the user/password fields blink there for half a second, then they go away. The login popup is there but no key I press gets to show it. Typing some arrow keys and my password blindly I could fortunately log in (I had some work ongoing on that session and restarting kdm was just not acceptable). Login fields look good when I try to switch to other user X sessions without the problem. -- Gray square overlaps top-left corner when opening an Mplayer+FireFox3 stream in Toma Internet TV https://bugs.launchpad.net/bugs/262172 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs