it looks like it is related to XServer with no backfill functionality https://launchpad.net/~ubuntu-x-swat/+archive/xserver-no-backfill "This PPA contains a variant of the xserver with background initialization disabled. This will result in background corruption (video garbage) in windows or new objects, however it also gives a performance boost, and on some drivers the corruption isn't noticeable."
This is imho a major issue for natty release because it affects "Classical Session" ** Description changed: - When I open a menu I get graphical corruption, some artefacts.. it seems video memory is not clean or has some issue. - This issue appeared with Xorg 1.10 (from its first rc release) and it is present in a virtual machine and also using a Nvidia or Intel gfx card so it seems not related to graphic drivers. + When I open a menu I get graphical glitces, also metacity decorator is + corrupted. + + This issue appeared with Xorg 1.10 (from its first rc release), + it is reproducible with different graphic drivers (ati, nouveau, nvidia, gma500, vesa, vbox), + it is present with metacity and with metacity compositor, only with compiz activated is no more present. this is a video with the problem: http://dl.dropbox.com/u/1338581/artefacts.ogv a thread in ubuntuforums with some comfirmations: http://ubuntuforums.org/showthread.php?t=1696211 ** Summary changed: - graphical glitches in menu (natty) + graphical glitches in menu and metacity (natty) ** Changed in: xorg-server (Ubuntu) Status: New => Confirmed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/726369 Title: graphical glitches in menu and metacity (natty) -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
