[Pkg-utopia-maintainers] Bug#650002: Bug#650002: network-manager-gnome: connection to WiFi leads to 'Gtk-WARNING **: cannot open display: :0.0'

[blabla blabla]

Am 25.11.2011 15:20, schrieb Michael Biebl:
> [always CC the bug report]
> On 25.11.2011 15:05, blabla blabla wrote:
>> Am 25.11.2011 14:38, schrieb Michael Biebl:
>>   >  On 25.11.2011 14:17, tom wrote:
>
>>   >>
>>   >>  (mousepad:3883): Gtk-WARNING **: cannot open display: :0.0'
>>   >>
>>   >
>>   >  What happened most likely, is that your hostname was changed.
>>   >  Could you verify that: what's the output of hostname before and after
>>   >  you connect to said Wifi network.
>>
>> correct, it changes from that in /etc/hostname to 'dhcppc0'.
>>
>>   >  Did the DHCP server send a hostname?
>>
>> how can I check that?
>
> You can run NetworkManager in debug mode [1]. But given it is set to
> dhcppc0, that's most likely what happened.
>
>>   >  Do you have the ifupdown plugin enabled in
>>   >  /etc/NetworkManager/NetworkManager.conf?
>>
>> [ifupdown]
>> managed=false
>>
>> setting it to true and restarting makes no difference.
>
> I meant:
> [main]
> plugins=ifupdown

It was

[main]
plugins=keyfile

I set it to

[main]
plugins=ifupdown,keyfile

This solved the problem of changing hostnames after restart. But with 
the nice side effect that all windows were missing titles and buttons to 
control them (the cross ... usually in the upper right corner). Deleting 
~/.cache, ~/.dconf and ~/.gconf/system solved that (I deleted all at a 
time, thus I don't know which one really did it).

regards,
Tom

>
>
> [1] https://live.gnome.org/NetworkManager/Debugging