Re: Network manager gets stuck in wireless hotspot mode when resuming from sleep

[Dan Williams <dcbw redhat com>]

On Fri, 2014-03-07 at 15:57 +1100, Will Rouesnel wrote:
> Using my laptop as a wireless router for my desktop, I can easily
> share it's wi-fi internet connection (provided by another wireless
> router elsewhere in the house) to my desktop by picking the "Shared to
> other computers" setting under it's configuration.
>
> This works fine.
>
> However, if I put the laptop to sleep (typically because I'm going out
> with it) then when I eventually get back to the house and try to
> reconnect it, NetworkManager will insist it's in "wireless hotspot"
> mode.
>
> This state is persistent - disabling through the GUI does not work, no
> internet connection is shared and the laptop cannot access the
> internet itself. A reboot does not fix the problem - the only fix I
> have found is to go to /etc/NetworkManager/system-connections, open up
> the file for the network I was using and manually change IPv4
> addressing to "auto". Then I have to explicitly disable the wired
> ethernet interface in order to allow it to resume normal operations.

Are you able to get some system logs from NetworkManager before and
after the suspend/resume?  Those are usually in /var/log/daemon.log
or /var/log/syslog or /var/log/messages, depending on your distro.  I
think for Ubuntu it's /var/log/syslog.

Dan