Error while opening gui app from commandline[SOLVED]

rnarch · 2012-03-23 04:25:10

When I try to run a gui application from command line, I get following error:

# thunar
No protocol specified
Thunar: Cannot open display:

I have not been able to get info regarding this in the wiki.

Last edited by rnarch (2012-03-23 05:53:13)

MisterAnderson · 2012-03-23 04:34:16

Works fine for me here. This link gives a good answer http://www.linuxquestions.org/questions … ot-808706/

Of course, you could always launch it from your user using sudo or gksudo. You'll need to install the gksu package for the latter.

$ gksudo thunar

However, is there any reason that you're trying to launch it as root?

Last edited by MisterAnderson (2012-03-23 04:35:31)

rnarch · 2012-03-23 04:44:30

Thanks for your reply. I am trying to install gksu but pacman is not working even though browser is. I am putting this in a new thread.

ewaller · 2012-03-23 04:45:21

You are trying to run thunar as root. I really suggest you not run GUI stuff that can move and delete stuff with a mouse gesture as root.

I assume you are not running X as root. If you are, allow me to redouble my previous admonition.
In your example, are you running that from the command line, or from a terminal emulator under X?

If you must run as root, try MisterAnderson's suggestion, but note that the command is issued as a normal user.
You can also run thunar as root from a terminal by specifying the X session to which to attach, but I cannot put the incantation together off the top of my head. If you are interested, let us know and someone will probably come up with help.

rnarch · 2012-03-23 05:00:54

I really suggest you not run GUI stuff that can move and delete stuff with a mouse gesture as root.

I fully agree. But I have recently installed Arch and I am in the process of setting up for which I often need root access. I am not able to install gksu as I am having some trouble with pacman (pl. see my other thread).

rnarch · 2012-03-23 05:36:01

I have installed gksu and now following is the error:

# gksu thunar
No protocol specified
(gksu:1786): Gtk-WARNING **: cannot open display: :0.0

ewaller · 2012-03-23 05:46:04

That command wants to be run as a normal user.
Are you inside an X environment running a terminal, or are you on a console ?

rnarch · 2012-03-23 05:52:47

Yes. It is working very well now. I can open all partitions and read as well as write on files.

Many thanks for your help all the way. I think you guys have made Arch a great distro and this forum and the wiki are really very helpful.

ewaller · 2012-03-23 06:02:14

Okay. Here is another way to do it...

ewaller@odin:~ 1001 %xhost +
access control disabled, clients can connect from any host
ewaller@odin:~ 1002 %su
Password: 
[root@odin ewaller]# thunar

The GUI started and had a Big red banned at the top warning I was running as root.

Be afraid, be very afraid...

rnarch · 2012-03-23 06:30:39

Thanks. I'll be careful.

MisterAnderson · 2012-03-24 02:01:14

If you just want to automount partitions, have a look here: https://wiki.archlinux.org/index.php/Th … tomounting

Arch Linux

#1 2012-03-23 04:25:10

Error while opening gui app from commandline[SOLVED]

#2 2012-03-23 04:34:16

Re: Error while opening gui app from commandline[SOLVED]

#3 2012-03-23 04:44:30

Re: Error while opening gui app from commandline[SOLVED]

#4 2012-03-23 04:45:21

Re: Error while opening gui app from commandline[SOLVED]

#5 2012-03-23 05:00:54

Re: Error while opening gui app from commandline[SOLVED]

#6 2012-03-23 05:36:01

Re: Error while opening gui app from commandline[SOLVED]

#7 2012-03-23 05:46:04

Re: Error while opening gui app from commandline[SOLVED]

#8 2012-03-23 05:52:47

Re: Error while opening gui app from commandline[SOLVED]

#9 2012-03-23 06:02:14

Re: Error while opening gui app from commandline[SOLVED]

#10 2012-03-23 06:30:39

Re: Error while opening gui app from commandline[SOLVED]

#11 2012-03-24 02:01:14

Re: Error while opening gui app from commandline[SOLVED]

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