Can't run graphical aplications

João Esteves
Fri May 19 12:32:00 GMT 2006

Thank you for your answer, Brett.

I have some (not to much) familiarity with linux, but I'm used to configure 
a xorg.conf file. I understand that in Cygwin this does not exist, so I'm a 
little lost in how to set once for all the variable DISPLAY to
I runned xterm -display but it gave the error message :
"Can't open display:
xterm: Display is not set".
Also, I have in XP, in menu "start" "programs" (in fact this is in 
Portuguese, I hope the translation is Ok) "Cygwin-X" a shortcut for xterm, 
but it doesn't work.


----- Original Message ----- 
From: "Brett Serkez" <>
To: <>
Sent: Friday, May 19, 2006 1:08 PM
Subject: Re: Can't run graphical aplications

> I've tried to start several graphical aplications, like xmgrace, twm or 
> xpdf
> and I get always the same message "Can't open display: " It seems there is
> no display configured for the X server.
> On the other hand, Xwin starts the Xserver with no error messages.

You must have the DISPLAY variable set to point to your X-Server, the
most likely setting to work would be  If you use the
xterm that should start with the X-Server, this variable should
already be set.  X is clinet server, without the DISPLAY variable, the
clients are you starting have no way to find the X-server.

> Since I'm new in Cygwin, perhaps I'm missing something. Any help on this
> issue is highly appreciated.

A familarity with UNIX/Linux would be advisable as this is the
environment that Cygwin is providing.  There are many sources of
information on this topic including The Linux Documentation Project


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