Re: [Queue-developers] X11 problem

[W. G. K. <wer...@ya...>]

The DISPLAY variable is less of a problem with Queue than xhost.

Some hosts don't need xhost set if they share a filesystem, because the X
server will store MIT_MAGIC_COOKIE authorization information in .Xauthori=
ty
on startup, which lets anyhost connect that knows the cookie. This requir=
es
that the MIT_MAGIC_COOKIE authentication scheme (insecure and outdated) b=
e
enabled on the Xserver, however.

This might be a future improvement ---

1) Automatically setting xhost on the remote host (and possibly the
propagated locate DISPLAY variable if it is not already set and there is =
a
local screen (easy))

2) Since security is a big concern with users, doing something sshd-like
(unfortunately, the code ssh is not, AFAIK, GNU but is distributed under =
a
restrictive license.) which sets up a local virtual screen on each host a=
nd
then has all X11 traffic encrypted. Since one is always allowed to connec=
t
to a local screen, this doesn't involve xhost or MIT_MAGIC_COOKIE.

Santeri Hernej=E4rvi wrote:

> Kai Harrekilde-Petersen wrote:
>
> > I have a slight problem with the queue-developer version.
> >
> > I am unable to run Model Technology's "vsim" (a commercial VHDL
> > simulator) in GUI mode, while using queue.  In other words,
> > if I say "queue -w -i --full-pty -- vsim", vsim will run in tty mode.
>
> <snip>
>
> > Any help or suggestions are welcome,
> >
> >
> > Kai
>
> Have you tried setting DISPLAY explicitly?
>
> Santeri
>
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