This is a very ugly bug.
Sometimes this causes reboots to hang for long periods. Just timed it on a Wily system with all upgrades installed.
Takes 157 seconds, to shutdown system.
Above comments only mention 3.19 (Vivid) kernels. This problem persists in Wily...
net4-dev# lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 15.10 Release: 15.10 Codename: wily
net4-dev# uname -a Linux net4.bizcooker.com 4.2.0-22-generic #27-Ubuntu SMP Thu Dec 17 22:57:08 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
This is a very ugly bug.
Sometimes this causes reboots to hang for long periods. Just timed it on a Wily system with all upgrades installed.
Takes 157 seconds, to shutdown system.
Above comments only mention 3.19 (Vivid) kernels. This problem persists in Wily...
net4-dev# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 15.10
Release: 15.10
Codename: wily
net4-dev# uname -a
Linux net4.bizcooker.com 4.2.0-22-generic #27-Ubuntu SMP Thu Dec 17 22:57:08 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux