Question

5

Cannot run a GUI app from cron

rated 0 times [ 5] [ 0] / answers: 1 / hits: 10369 / 2 Years ago, wed, june 8, 2022, 2:54:14

After doing a "sudo su -" on an Ubuntu 12.04 notebook I did a "crontab -e", added this:

* * * * * env DISPLAY=:0.0 /usr/bin/gnome-calculator

and waited for minutes. Nothing Happened. I don't have any external monitors and if I run this command "env DISPLAY=:0.0 /usr/bin/gnome-calculator" in the terminal, it just works. But not from cron. Why?

The syslog only contains this:

May 24 14:37:01 localhost cron[1227]: (root) RELOAD (crontabs/root)

May 24 14:37:01 localhost CRON[16432]: (root) CMD (env DISPLAY=:0.0 /usr/bin/gnome-calculator )

And I already tried an "xhost +localhost".

[root@NOTEBOOK /var/log] xhost

access control enabled, only authorized clients can connect

INET:localhost.localdomain

SI:localuser:USERNAME

[root@NOTEBOOK /var/log]

So the solution for another question like this on askubunut didn't worked.