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Re: networkmanager hostname woes

From: Alex Sassmannshausen
Subject: Re: networkmanager hostname woes
Date: Wed, 13 Sep 2017 17:47:43 +0200
User-agent: mu4e 0.9.18; emacs 25.2.1

Hi Thomas,

Thomas Danckaert writes:

> Hi Guix,
> since the change to networkmanager, I've been running into the 
> following problem: when I connect to a wireless network using 
> networkmanager, I can no longer start graphical applications 
> (starting any program fails with “cannot open display :0.0” and 
> similar messages).
> AFAIU, the cause is that networkmanager changes my hostname (after 
> DHCP?), in my case to “new-host2” or something similar, and this 
> seems to break the X session.  When I manually restore the hostname 
> with “sudo hostname <original-hostname>”, the problem is solved.  Is 
> there anyway to disable this behaviour for networkmanager?

I agree with your analysis, I would just add that this behaviour happens
for me at home, but not in most other "professionally managed" wireless
networks.  This makes me think that it might be a network configuration
derived issue — but I have not been able to get to the bottom of this

I see that you might be based in Belgium — I am too, and my home network
uses most of the defaults from Proximus' B-Box 2.  If this is the case
for you too, then perhaps it is a matter of the default settings in that

Best wishes,


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