Arch Linux

pretzel

Member

Registered: 2005-12-24

Posts: 11

Can't run graphical programs as root after pacman -Syu

At first there was this problem with GDM - after the upgrade with packman I did a reboot, then it got to the GDM starting stage, declared [DONE] with no errors, but GDM didn't start. I tried launching it manually by entering gdm from the root shell, but it said: " Gtk-WARNING **: cannot open display:" and that's it. So for now I'm using KDM, but I can't run any program as root, programs such as nmapfe, k3b will show up an error like this:

Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified


Gtk-WARNING **: cannot open display: :0.0

(For nmapfe)

Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified

kdeinit: Can't connect to the X Server.
kdeinit: Might not terminate at end of session.
Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified

kded: cannot connect to X server :0.0
DCOP aborting call from 'anonymous-26300' to 'kded'
kded: ERROR: Communication problem with kded, it probably crashed.
Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified

k3b: cannot connect to X server :0.0
ERROR: KUniqueApplication: Registering failed!
ERROR: Communication problem with k3b, it probably crashed.

(For k3b)

any suggestions?

Dusty

Schwag Merchant

From: Medicine Hat, Alberta, Canada

Registered: 2004-01-18

Posts: 5,986

Website

Re: Can't run graphical programs as root after pacman -Syu

'xhost +localhost'  as user before SUing root. Not really good to run apps as root though.

Dusty

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kristian

Member

From: Norway

Registered: 2005-06-03

Posts: 24

Re: Can't run graphical programs as root after pacman -Syu

I've got the same problem.
"/etc/rc.d/gdm start"
Gives me the following output:
:: Starting GDM   [DONE]
But GDM doesn't start. I still see the traditional console-thing, and ^F7 doesn't take me to a graphical screen.

gdm does not show in top.

startx works though.

Background info:
I shut down my computer on friday and left my apartment for the weekend. At that time it was a while since last time I rebooted it. When I turned i on sunday night, it booted to console. Not the first time this happends. but "pacman -S nvidia" usually solves this. This time i did pacman -Syu first though. (But I form what I can see im missing quite a few updates.. hm... I'm going to do "pacman -Syu" and try again.

kristian

Member

From: Norway

Registered: 2005-06-03

Posts: 24

Re: Can't run graphical programs as root after pacman -Syu

Found the solution here:
http://bbs.archlinux.org/viewtopic.php?t=18170

In my case:
mv /opt/gnome/etc/gdm/gdm.conf.pacsave /opt/gnome/etc/gdm/gdm.conf
Did the trick

Snarkout

Member

Registered: 2005-11-13

Posts: 542

Re: Can't run graphical programs as root after pacman -Syu

Why not use kdesu or the gtk equivalent (gtksu?)?

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Unthinking respect for authority is the greatest enemy of truth.
-Albert Einstein

iphitus

Forum Fellow

From: Melbourne, Australia

Registered: 2004-10-09

Posts: 4,927

Re: Can't run graphical programs as root after pacman -Syu

Why not use kdesu or the gtk equivalent (gtksu?)?

Because, some people, like me, are lazy or find it hard to break old habits