On Saturday, 31 August 2019 23:41:13 BST Tamer Higazi wrote: > Hi people, > > For a specific time I have a very strange behaviour on gentoo. > I cannot start any applicaion on xfce, just logout or shutdown the machine. > > When I try through an existing open shell to execute a program I get > this error: > > tamer@tux / $ firefox-bin > No protocol specified > Error: cannot open display: :0.0 > > Can somebody tell me what's wrong here? > > > best, Tamer
It may be related to an obscure old networkmanager bug, whereby it changes the hostname in /etc/hosts. I don't use networkmanager and I don't use xfce to comment on particulars, but here's some generic things to check: 1. Have a look at the 'Host and domain information' section and at the 'The hosts file' section in the handbook and configure them accordingly: https://wiki.gentoo.org/wiki/Handbook:AMD64/Installation/System 2. Does 'echo $HOSTNAME' show what you have configured in your system, after you restart networkmanager, or reboot? 3. Have you added /etc/init.d/hostname to your boot runlevel? -- Regards, Mick
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