DISPLAY problem

Junior_DBA · 09-25-2008, 06:56 AM

Hi all. I am in trouble

I am trying to run java application. I set DISPLAY=localhost:0.0 but without success

Quote:

Inizializing java virtual machine...
Can't connect to x11 window server using localhost:0.0

I am on VMware 6.0 / RHEL4(32) /Windows XP

acid_kewpie · 09-25-2008, 07:01 AM

stabbing in the dark, you're running this as root whilst logged in to X as a normal user? run "xhost +localhost" as your non-root account to let root use the X display.

Junior_DBA · 09-25-2008, 07:22 AM

Thanks for responce. But I am newbie, don't know how to use xhosts

I logged in as root. Applications->Terminal.

root@newbie_world > su - mega_newbie
mega_newbie@newbie_world> xhost
Xlib: connection to ":0.0" refused by server
Xlib: no protocol specified
unable to open display

john test · 09-25-2008, 07:48 AM

$ export DISPLAY=:0.0
$ xhost +

The above works on my ubuntu machine --
You coould also do:
$ export DISPLAY=localhost:0.0
$ xhost +

if you do:
$ echo $DISPLAY -- you can see what the display is currently set to

I think in some distros, you would do:
$ setenv DISPLAY=:0.0
or
$ setnv DISPLAY=localhost:0.0

Junior_DBA · 09-25-2008, 07:57 AM

I am getting the same error

export DISPLAY=:0.0
echo $DISPLAY
:0.0
./java_application
Inizializing java virtual machine...
Xlib: connection to ":0.0" refused by server
Xlib: no protocol specified
unable to open display

localhost:0.0 also throws this error

acid_kewpie · 09-25-2008, 08:13 AM

you've not run xhost properly. please read my post again more carefully.

john test · 09-25-2008, 08:22 AM

That sounds like you are working across the LAN where you are sshed into machine B from Machine B
if so, then you need to do:
Machine B where ip address is 192.168.1.102
$ export DISPLAY=:0.0
$ xhost +

then on machine A where ip address is 192.168.1.101
$ export DISPLAY=:0.0
$ xhost +

then again on Machine A
$ ssh 192.168.1.102
password XXXXX
export DISPLAY=192.168.1.101:0.0
$ xhost

Junior_DBA · 09-25-2008, 09:16 AM

No I am working on WMware 6.0 i run it on the same virtual machine.

Acid, i didn't get what you suggested. I need to run it from non-root user mega_newbie.

i did:
root@newbie_world >xhost + localhost
xhost: enable to open DISPLAY "localhost:0.0"

acid_kewpie · 09-25-2008, 09:52 AM

Quote:

root@newbie_world >xhost + localhost
xhost: enable to open DISPLAY "localhost:0.0"

... as you are root, like i told you not to be. don't do this as root.

Junior_DBA · 09-26-2008, 01:21 AM

mega_newbie@newbie_world > xhost + localhost
xhost: unable to open display "localhost:0.0"