Ubuntu 9.10 (Karmic) 32-bit with all the current updates 3D-accelerated proprietary graphics driver for ATI cards is on.
$ uname -a Linux piotr-desktop 2.6.31-20-generic-pae #58-Ubuntu SMP Fri Mar 12 06:25:51 UTC 2010 i686 GNU/Linux $ java -version java version "1.6.0_0" OpenJDK Runtime Environment (IcedTea6 1.6.1) (6b16-1.6.1-3ubuntu1) OpenJDK Server VM (build 14.0-b16, mixed mode) Problem shows up when running Matlab R2009b 32-bit . When Compiz is running and more than one Matlab window is opened sometimes one or two Matlab windows disappear from GNOME panel. They are available through Alt+Tab or Turbo+Tab. When Compiz is disabled it works OK. BTW, Scilab 5.2.1 seems to work fine, though it's build around Java graphics as well. Cheers, Piotr -- some windows do not appear in the window list https://bugs.launchpad.net/bugs/144406 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