Move it to gnome-session. On VT switch it doesn't redraw the background and you see whatever is in the framebuffer. gksu, screensaver have the same issue. I'm not sure it's fixable without awful hacks.
** Changed in: xorg (Ubuntu) Sourcepackagename: xorg => gnome-session Status: Unconfirmed => Confirmed -- Screen not properly redrawn on desktop change, if a system dialog is shown https://launchpad.net/bugs/77415 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs