Apparently it's really iwlagn. After unloading the module (sudo rmmod iwlagn) rebooting works fine. A single line message is printed on screen before the reboot actually takes place, but I am not able to read it.
I will now try the latest wireless module version using http://linuxwireless.org/en/users/Download#Gettingcompat- wirelessonUbuntu hoping this issue is a module issue (not one with Ubuntu kernel patches) and may have been fixed already. -- failed to stop md devices on jaunty restart or shutdown https://bugs.launchpad.net/bugs/350207 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
