Xdm and startx

Craig Colton meerkats at bellsouth.net
Wed Oct 24 16:00:36 PDT 2001


On Wednesday 24 October 2001 10:32 am, you wrote:
> Craig Colton wrote:
> <snip />
>
> >> From the reference above... This has nothing to do with xdm. xdm does
> >> not give error, but startx does. To diagnose, from a VT /dev/tty[1-6]
> >> do a `echo $PATH' and see if it contains /usr/X11R6/bin .
> >>
> >> If your PATH does not contain the path to startx and friends then you
> >> will get this error. Add /usr/X11R6/bin to your PATH; refer to the
> >> actual /usr/X11R6/bin/startx script for more info about how startx is
> >> doing its thing...
> >>
> >> HTH
> >
> > I was under the impression (possibly incorrect) that xdm authorizes all
> > requests for a display. How might xdm be in one's path and not startx?
>
> Have you set your PATH to include /usr/X11R6/bin ? xdm BTW does not
> read any of your shell startup files unless you explicitly tell it to
> do so somewhere in /etc/X11/xdm/Xsession or by some other method.
>
> Also, xdm-config has the following possibility:
>
> DisplayManager.DISPLAY.userPath
>        Xdm sets the PATH environment variable for the ses-
>        sion to this value.
>
> ==== Abbreviated Explanation =) ====
> Well, one difference between the two is that xdm is started by someone
> (i.e., superuser) and left running for the purpose of managing
> displays. xdm doesn't really know anything about the user...
>
> startx OTOH, *is* started directly by the user. The user's environment
> in effect when startx is run gets ?_adopted_? by all of the child
> processes.

I think you're saying then, that the user who could not get startx to work,
ran xdm (which did work) as su; logged out, logged back in as a user and 
tried startx.

Regards,
Craig 

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