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20000119: Gempak

Ka Kit,

The DISPLAY variable is used by any program which needs to connect to the X 
server.

It can either be setenv DISPLAY unix:0 or ip_address:0 or hostname:0.
In solaris, if you are not the owner of the console, eg someone else is logged
in to the console, then they have to allow you to connect to the display with
xhost + hostname, even if you are on the same machine.

What may have happened is you might have logged in the console using
the ldm account- and the McIDAS and Gempak accounts did not have
permission to display. Or, you have the incorrect ip address.

Steve Chiswell
Unidata User Support


>From: "Ka Kit Lai" <address@hidden>
>Organization: .
>Keywords: 200001201818.LAA25257

>I thought the setenv DISPLAY is only use when you want to load the X display 
>on a remote machine away from the console. But I did try to type this in my 
>console but it doesnt work.
>
>setenv DISPLAY 134.74.52.189:0
>
>where the IP is the address of the machine I want to load the GUI.
>Before I install and configure the LDM, the mcidas and gempak GUI can be 
>loaded without setting the DISPLAY variable. Now, I cannot even load the 
>mcidas GUI nor the Gempak. What do you think might be the problem and how 
>can I fix it?
>
>                              Ka Kit Lai
>
>>From: Unidata Support <address@hidden>
>>To: "Ka Kit Lai" <address@hidden>
>>CC: address@hidden
>>Subject: 20000119: Gempak
>>Date: Wed, 19 Jan 2000 12:37:01 -0700
>>
>> >From: "Ka Kit Lai" <address@hidden>
>> >Organization: .
>> >Keywords: 200001191853.LAA11152
>>
>> >I try open the Gempak GUI by execute the garp in 
>>$GEMPAK_HOME/bin/sol/garp
>> >and it said "garp: cannot open display"
>> >What will be the cause of that and how can I fix it? I didnt open any
>> >browser when I run this command.
>> >
>> >                                       Ka Kit Lai
>> >______________________________________________________
>> >Get Your Private, Free Email at http://www.hotmail.com
>> >
>>
>>Ka Kit,
>>Gempak needs to be able to connect to your X display. You should set your
>>DISPLAY environmental variable to your X host. Typically this is either
>>setenv DISPLAY unix:0
>>or
>>setenv DISPLAY hostname:0
>>
>>You should always launch the program "ntl" as the launcher to click
>>on the Garp icon for starting Garp. The ntl launcher ensures that all the
>>Gempak programs will be able to obtain all of the colors they require.
>>
>>If you launch ntl and it responds with a message
>>that it can not obtain the required number of colors, then you should
>>exit any web browser or other application that is tying up the
>>color table. You can also decrease the number of colors that Gempak will 
>>use
>>with command line options to ntl. The default is to reserve 128 colors
>>for satellite images. You can decrease this to 64 for example by launching
>>ntl using the -s option as: "ntl -s 64 &".
>>
>>Steve Chiswell
>>**************************************************************************** 
>><
>>Unidata User Support                                    UCAR Unidata 
>>(303)497-8644                                                  P.O. Box 
>>address@hidden                                   Boulder, CO 
>>---------------------------------------------------------------------------- 
>><
>>Unidata WWW Service                        http://www.unidata.ucar.edu/     
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>
>______________________________________________________
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>