Problem running X apps as other users

dissociative · 11-28-2007, 05:32 PM

I run X with startx from runlevel 3, when I try to run any graphical application as a another user I get error messages that say unable to open display like this.

Code:

bash-3.1$ audacious 
No protocol specified
No protocol specified
audacious: cannot open display:

Code:

bash-3.1$ xarchive
No protocol specified
Error parsing options

I'm not sure if this has something to do with the runlevel

shadowsnipes · 11-28-2007, 05:37 PM

no it has nothing to do with the runlevel and everything to do with the X server. You have to give other users permission to use the already running X server (since it is running under a different user).

A dangerous, but easy way to allow everyone access is to simply do a

Code:

xhost +

It is safer just to add the username you want to be able to connect with a

Code:

xhost +USERNAME

dissociative · 11-28-2007, 08:44 PM

I tried that but it returns an error even as root:

Code:

root@darkstar:/home/guest# xhost +user
No protocol specified
xhost:  unable to open display ":0.0"

shadowsnipes · 11-28-2007, 11:36 PM

oops forgot to tell you to also export the display.
As the user you logged into X...

Code:

xhost +127.0.0.1

now as the other user

Code:

export DISPLAY=127.0.0.1:0.0

Now try running your apps.

Alien_Hominid · 11-29-2007, 12:33 AM

Check this and later posts: http://www.linuxquestions.org/questi...4/#post2964588

For username it should be like this:

xhost +user@domain e.g. xhost +dissociative@localhost

difrost · 11-29-2007, 03:08 AM

Also specify only display number, e.g.:

Code:

export DISPLAY=:0