In my case a TP-Link WR543 wireless router was causing the problem. A firmware upgrade helped. I cannot confirm the error message on shutdown though.
-- Error on shutdown --> ipw 3945: error sending cmd #07 to daemon: timeout after 500ms https://bugs.launchpad.net/bugs/71510 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
