Hey dmoyne, It is unlikely that the problem is caused by any interaction of kdm and compiz.
The KDE shutdown sequence looks basically like this: * user invokes kde shutdown with certain type (logout, shutdown, reboot...) * a part of KDE (called ksmserver) will then try to get all applications to quit properly (in order to store their session data), if they don't quit within a certain amount of time, it will try to kill them * once all desktop processes have quit, ksmserver will pass the shutdown type to kdm (in case it needs kdm interaction, i.e. anything but logout) * ksmserver ends the whole kde session and kdm takes over So I presume that either compiz doesn't quit and/or doesn't take kindly to killing and/or somehow compiz (as a window manager) would need special treatment by ksmserver to get shutdown properly. I am not sure on this, but compiz stopping the shutdown sequence seems like the best option here. So I am bouncing this bug over to the compiz package, maybe the specialists in compiz matters have a clue to what is going on. Otherwise they can be free to bounce it back to us for investigation on the KDE side. Have a nice day, and thank you for this report :) ** Package changed: kdebase-workspace (Ubuntu) => compiz (Ubuntu) ** Summary changed: - kdm not possible to halt or reboot + KDE session not quitting due to compiz -- KDE session not quitting due to compiz https://bugs.launchpad.net/bugs/310764 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