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#1 2018-05-26 14:54:27
- valgio
- Member
- Registered: 2017-11-30
- Posts: 18
[SOLVED]Network Manager issue
Hi guys
Some days ago i met this problem. I installed NetworkManager using pacman on KDE Plasma5 and i ran it using systemctl. It has started to work fine. Before did other checks i rebooted the system. (obviously i enabled the NetworkManager service).
When the system was up i could see on the right the icon of network manager looking for a network.
Here the problem from the moment after the connection up i could't launch any application.
I tried to launch terminal but a warning window with this sentence "KDEInit could not launch '/usr/bin/konsole'" appears.
I checked the journal and i found
new-host konsole[4658]: Could not connect to any X display.
I also realized that i just couldn't launch apps. But those launched before were still running.
So i disabled NetworkManager, launched terminal and enabled NetworkManager. I tried to launch some apps like chromium or spotify from terminal but this warning occured:
Gtk-WARNING **: cannot open display: :0
I found that this problem starts when connection is up. If i put the system offline everything turns out well.
I also tried to delete NetworkManager and reinstall it from scratch but it gives me the same problem.
I tried to figure out how Xserver works (very nice lecture) but i didn't found nothing usefull.
Finally i decided to ask here 
Last edited by valgio (2018-05-26 16:49:17)
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#2 2018-05-26 15:04:55
- Slithery
- Administrator
- From: Norfolk, UK
- Registered: 2013-12-01
- Posts: 5,776
Re: [SOLVED]Network Manager issue
Set your hostname correctly.
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#3 2018-05-26 16:48:43
- valgio
- Member
- Registered: 2017-11-30
- Posts: 18
Re: [SOLVED]Network Manager issue
I didn't have /etc/hostname
Woow.. i would never have figured out...
Can you pls explain me quickly why? And thank a lot!!
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#4 2018-05-26 22:21:34
- c00ter
- Member
- From: Alaskan in Washington State
- Registered: 2014-08-28
- Posts: 395
Re: [SOLVED]Network Manager issue
I didn't have /etc/hostname
Woow.. i would never have figured out...
Can you pls explain me quickly why? And thank a lot!!
You must have skipped that portion when you installed Arch per the Wiki. https://wiki.archlinux.org/index.php/In … figuration
UNIX was not designed to stop you from doing stupid things, because that would also stop you from doing clever things. -- Doug Gwyn
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