unable to open display ""

[Nonie_2008]

Hi all,

i have a problem with vnc server. it can start but when type xhost + , it gives error --> unable to open display "".

can somebody help me?

Thanks

-Nonie

[Torsten.]

Where did you run the command?
The system you are on is not associated with a X-server.
You need to run the command "xhost +" where your x-server is running, e.g. your PC, before you connect to the server.

[Nonie_2008]

Hi..

Thanks for your reply. i run the command at console.. as root. this problem occur today previously no problem.

Thanks

-Nonie

[Torsten.]

You have to run the command on the system you want to display the application.
Make sure you didn't run anything like "su" before.

[Nonie_2008]

Hi ..

actually we run fbackup at our server. we have to shutdown all services and databse to have cold backup. now backup already complete and we want to startup all services as usual. for vnc, what we did was:

1. cd /u01/vnc
2. ./vncserver :0 -pn -localhost --> OK
3. xhost +10.1.1.6 --> at this stage it gives the message 'unable to open display"" '

we are at tsm mode at console. but the login is maintain as 'root'

Thanks

-Nonie

[Nonie_2008]

Hi Torsten...

Just want to inform u we already solve the problem. when compare to other server we cat teh .profile and see no DISPLAY parameter was set. therefore what we did is

1. DISPLAY=10.1.1.6:0.0
2. export DISPLAY

when check again in env, the DISPLAY parameter is there, and when run again xhost +10.1.1.6 then its ok already. no more error as 'unable to open display'

Thanks anyway at least can give me some ideas to solve.

-Nonie