After further research I discovered, that "Virtual" values bigger than 2048 cause this problem. As stated before only Hardy is affected, values bigger than 2048 are working fine in Gutsy.
-- "additional startup programs" crash xserver https://bugs.launchpad.net/bugs/190799 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
