Can't start program using X in root console!
 

When starting a program that uses X as user from the console everything works perfectly. But when I become root with su and then try to strart the same program, it fails with this message:
Xlib: connection to ":0.0" refused by server
Xlib: No protocol specified

Error: Can't open display: :0.0

I am using Suse 9.0 AMD64 with a nvidia card and driver. This problem appears for example when I want to use the graphical installer of crossover-office, to install into another directory than the home.
Thank for any help!

Re: Can't start program using X in root console!
 

Try in the console window either export Display=0.0 or export Display 0.0 I think is is the first one that is the correct syntax

thanks, but there's still the same error message....

your problem is that your loggin in the X server as user so root cant access it. im not sure if theres a way around it. maybe xnest although im not sure exactly what it does because ive never used it

You need to use the xhost command to allow root access to X. Check out man xhost for the fine details on how to do it.

cool, thanks verry much!

just had to type

xhost local:root

as user... and now it seems to work!!

but it was a stange problem... ;) maybe caused by trying to install some different graphic cards, like ATI and nvidia..

Actually, I don't believe it is a strange problem. I think this is X working as designed. I know I had to add a line like that to my .xinitrc file so I could run graphical apps as root if I needed to. And it certainly doesn't have anything to do with your graphics card.

Glad you got it running.

So maybe it's configured like this in suse (and other distributions), but I was used to Redhat where this is already set in some script probably...