[SOLVED] How can I use another user's display

Issue

I'm using xdotool in a SSH connection logged in as root, I'm setting DISPLAY=":0.0" which is what echo $DISPLAY on the logged user says. But I get a error unless I su to the other user:

root@sb:~# export DISPLAY=":0.0"
root@sb:~# xdotool getactivewindow
No protocol specified
No protocol specified
Error: Can't open display: (null)
Segmentation fault (core dumped)

---

geerm@sb:~$ export DISPLAY=":0.0"
geerm@sb:~$ xdotool getactivewindow
41943046

Is this even possible? If so, what do I need to change to use the logged in user's session?

Solution

By default, most X servers disallow other users displaying to each other's screens. If you want to disable this protection, you might be able to using xhost.

Answered By - zigdon

Answer Checked By - Candace Johnson (WPSolving Volunteer)