On Sun, Jan 25, 2004, Muli Ben-Yehuda wrote about "Re: no display":
> On Sun, Jan 25, 2004 at 01:07:01PM +0200, Aaron wrote:
>
> > theone:/home/aamehl# xev
> > Xlib: connection to ":0.0" refused by server
> > Xlib: No protocol specified
>
> what does 'xhost' say? does 'xhost +localhost' or 'xhost +' help? be
You may want to try "xhost +" and see if that helps (it should, if I
understood your problem correctly), but PLEASE, don't adopt this as a
permanent solution. It's a dangerous habit to get into.
I am guessing that your problem is that your X Windows session is logged
in as an ordinary user (your own account, aamehl), and you tried to run
"xev" as root (judging from your prompt, "#").
You may be surprised that root can't do something that an ordinary user
can, but X-Windows authentication actually works differently from the
ordinary Unix permission model, because it is aimed to work across hosts,
not just on one host. The usual X authorization setup (verbosely called
MIT-MAGIC-COOKIE-1) is that the X server chooses a random string and puts
it in a file in your home directory (~/.Xauthority). Now, every time you
run an X Windows program it reads that string and sends it to the X server,
as a proof it is running under your account (this file is unreadable to
others). If you want to run X programs from other accounts (on this, or a
different machine), including the root account, you'll need to transfer the
authentication string, usually with the xauth(1) command. For root, there's
an easier workaround: try running
HOME=/home/aamehl xev
which runs xev with your home (rather than /root) as the home directory.
When xev starts, it reads your ~/.Xauthority, rather than root's, and finds
the appropriate authentication string. This works because root can actually
read your private files - it won't work for other users on your machine for
which this file is unreadable.
Hope this helps.
--
Nadav Har'El | Monday, Jan 26 2004, 3 Shevat 5764
[EMAIL PROTECTED] |-----------------------------------------
Phone: +972-53-790466, ICQ 13349191 |In Fortran, God is real unless declared
http://nadav.harel.org.il |an integer.
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