topic Re: Gui Display issue in Operating System - HP-UX

Gui Display issue

Sanjeev gupta_2 — Thu, 03 Sep 2009 13:02:00 GMT

Hi,

I'm facing problem in gui dispaly using ReflectionX. I installed reflectionX on my PC and now I connect to vpn and then from Putty login to unix box , there I set display as export Display="pc ipaddress":0.0"
and then I run command to get dispaly but I got error " Warning: cannot open display
" , after looking configuration at reflectionx , I tried this:
export Display="pc ipaddress":"dispaly number"
.
This display number is there in setting at ReflectionX.

but I get same thing "" Warning: cannot open display
"

pl. suggest

Re: Gui Display issue

Tingli — Thu, 03 Sep 2009 13:07:01 GMT

I see a link in itrc, it might be helpful.

http://forums13.itrc.hp.com/service/forums/questionanswer.do?admit=109447627+1251986791409+28353475&threadId=1001519

Re: Gui Display issue

Stephan. — Thu, 03 Sep 2009 13:08:08 GMT

Hi,
did you check in putty in the X11 sction if "Enable X11 forwarding" is checked?

Is it enabled on the Server?

Re: Gui Display issue

Torsten. — Thu, 03 Sep 2009 13:13:46 GMT

Just tried, starting reflectionX without doing anything else is enough to have Xserver running.

Then

WIN> putty -X server-ip

UX# xclock

is working.

Check the $DISPLAY setting - does it fit?

Re: Gui Display issue

Sanjeev gupta_2 — Thu, 03 Sep 2009 13:29:05 GMT

no luck, still facing same error

Re: Gui Display issue

Steven Schweda — Thu, 03 Sep 2009 13:33:52 GMT

> export Display="pc ipaddress":0.0"

These are not the same:

export Display
export DISPLAY

"export DISPLAY" should have some effect.
No one cares about "Display".

Re: Gui Display issue

Torsten. — Thu, 03 Sep 2009 13:39:38 GMT

With "putty -X ..." you don't need to do this - did you try this?

Re: Gui Display issue

Mel Burslan — Thu, 03 Sep 2009 16:01:38 GMT

if you are doing the ssh tunneling right, you should not have "can not open display" problem. I am not familiar with putty's -X option from the command line but if you are using putty through the GUI start-up, on the left, white background panel, with a selection tree, find the "X11" section located under "Connection --> SSH". Make sure Enable X11 forwarding is checked and MIT-Magic-Cookie-1 radio button is selected, !!NOT!! the XDM authorization (unless of course you have a strange setup)

as soon as you log in under these settings, run command :

env|grep DISPLAY

and you should see something like this:

DISPLAY=localhost:13.0

DO NOT CHANGE this, i.e., do not use anything like :

export DISPLAY=IP_Address:0.0

otherwise you will kill the tunnel operation.

If you need to su into another account, then before executing su command, list the MIT Magic cookies in existence as follows:

$ xauth list

you will see something like this:

hostname/unix:11 MIT-MAGIC-COOKIE-1 f98bce931530454d925d961c610e61c2
hostname/unix:10 MIT-MAGIC-COOKIE-1 9189eadb172c30c72d077963790a8fe5
hostname/unix:13 MIT-MAGIC-COOKIE-1 2c8943bca9b37d05b1d8242cadabd523

make sure you select the line associated with your DISPLAY number from the env|grep DISPLAY command above (match the number after :) and copy the whole line into your buffer space.

execute your su command

once you are in the new user's environment, execute:

xauth add

at this point, you should be able to run all your X11 commands.

Hope this helps

Re: Gui Display issue

Steven Schweda — Thu, 03 Sep 2009 18:09:45 GMT

> otherwise you will kill the tunnel operation.

Well, you won't be using it. On the other
hand, if it's not set up properly, then not
using it may be the easy way to go.

Re: Gui Display issue

Sanjeev gupta_2 — Fri, 04 Sep 2009 08:27:53 GMT

i tried but still getting same error.
pl. suggest something to sort it out

Re: Gui Display issue

Torsten. — Fri, 04 Sep 2009 08:37:57 GMT

Try

putty -X

and confirm that you tried exactly this command.

Re: Gui Display issue

Steven Schweda — Fri, 04 Sep 2009 13:07:07 GMT

> i tried but still getting same error.

You "tried" _WHAT_? The "same error" as
_WHAT_?

> pl. suggest something to sort it out

Provide some actual information, or else
consult a psychic?