GNU bug report logs - #15037
Display can't be opened (display newer than emacs session)

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From: Glenn Morris <rgm <at> gnu.org>
To: "Sewall\, Jason" <jason.sewall <at> intel.com>
Cc: 15037 <at> debbugs.gnu.org
Subject: bug#15037: Display can't be opened (display newer than emacs session)
Date: Tue, 06 Aug 2013 20:03:22 -0400

"Sewall, Jason" wrote:

> I have a long-running emacs session with a server running on it
> (24.2.1, on Fedora 18). I have started up a new VNC session on the
> host, creating DISPLAY :1.0, but emacs refuses to let me create a
> frame on it:
>
> M-x make-frame-on-display <RET> :1.0 <RET>
> Display :1.0 can't be opened
>
> If I start a new emacs session with emacs (with -Q or not) and run the
> above, the frame is created.
>
> I am not an expert in emacs frame handling nor in X, but it seems like
> emacs is reading the available displays when it starts up and refuses
> to connect to anything that started up after it.

With Emacs 24.2, the following works fine for me:

## Without X running
emacs -Q --daemon
startx &
## Back in the tty
emacsclient -t
## In Emacs
(make-frame-on-display ":0.0")

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