Hello,
sorry for the crosspost, but I don't know which one of the
comp.sys.sun.* groups would be most adequate for this topic...

I have a strange problem with xdm on Solaris 9. I tried to install VNC
as a remote graphical login service, as it is explained in the Xvnc man
page. In short, you add to /etc/inetd.conf a line like this one

vnc stream tcp nowait root /usr/local/bin/Xvnc Xvnc -inetd -query
localhost -once -securitytypes=none

and run xdm. The '-query localhost' option in Xvnc command line
parameters causes it to send a XDMCP request to the xdm at localhost, so
after connecting with vncviewer to the port designated for this service
you should see the xdm login screen, and after you log in, the regular X
session should be started.
It worked flawlessly on my old server with Solaris 2.5.1. Now, under
Solaris 9, I'm unable to get it working. The xdm login screen appears,
but after I log in, the session ends immediately - the connection is closed.
I tried to trace xdm with truss, and it turned out that it doesn't run
the Xsession script at all. It runs the environment preparation script
(Xstartup), then goes on to starting Xsession, but before even trying an
exec(), a SIGSEGV occurs somewhere and probably xdm jumps right to the
"cleanup" script Xreset.
I tried also to use dtlogin instead of xdm (actually, I tried this
first, because that's exactly what I want to do), and in that case the
failure occurs as soon as dtlogin is trying to execute dtgreet; so
there's no login window at all, only black screen for a fraction of
second, and then disconnect.

1) Can anybody help me to debug and fix this? I have the full output
from truss available.
2) I tried to search sunsolve.sun.com and found some documents that
mention "Unable to use xdm for remote session with Solaris 9". The
(probably) interesting ones are for example:
http://sunsolve.sun.com/search/docum...=1-1-4748474-1
http://sunsolve.sun.com/search/docum...=1-1-2058652-1
http://sunsolve.sun.com/search/docum...=1-1-4262197-1
http://sunsolve.sun.com/search/docum...ey=1-9-43962-1
However, they are only available for users with a Sun service contract
and I don't have one. Could anybody with a service contract send me
these documents?
3) Any other ideas?
It's important for me to solve this problem. Thanks in advance.
--
Regards,
Jaroslaw Rafa
raj@ap.krakow.pl

Jaros³aw Rafa napisa³(a):
> Solaris 9, I'm unable to get it working. The xdm login screen appears,
> but after I log in, the session ends immediately - the connection is closed.
> I tried to trace xdm with truss, and it turned out that it doesn't run
> the Xsession script at all. It runs the environment preparation script
> (Xstartup), then goes on to starting Xsession, but before even trying an
> exec(), a SIGSEGV occurs somewhere and probably xdm jumps right to the
> "cleanup" script Xreset.
[...]
> 2) I tried to search sunsolve.sun.com and found some documents that
> mention "Unable to use xdm for remote session with Solaris 9". The
[...]
> However, they are only available for users with a Sun service contract
> and I don't have one. Could anybody with a service contract send me
> these documents?

I did some more search on Sunsolve and found a document
http://sunsolve.sun.com/search/docum...=1-1-4520680-1 which
seems to indicate that this behavior has something to do with IPv6
addressing. The document description mentions ConvertAddr function
returning -1 and this is exactly what happens in my case - and just
ConvertAddr returns -1 the mentioned SEGSIGV occurs. However, access to
this document also requires a service contract. Therefore i ask again,
if someone with Sun service contract could help me access these documents?
--
Regards,
Jaroslaw Rafa
raj@ap.krakow.pl

=?ISO-8859-2?Q?Jaros=B3aw_Rafa?= <raj@ap.krakow.pl> writes in comp.sys.sun.admin:
|I tried also to use dtlogin instead of xdm (actually, I tried this
|first, because that's exactly what I want to do), and in that case the
|failure occurs as soon as dtlogin is trying to execute dtgreet; so
|there's no login window at all, only black screen for a fraction of
|second, and then disconnect.

Any errors in /var/dt/Xerrors?

|2) I tried to search sunsolve.sun.com and found some documents that
|mention "Unable to use xdm for remote session with Solaris 9". The
|(probably) interesting ones are for example:
|http://sunsolve.sun.com/search/docum...=1-1-4748474-1

http://bugs.opensolaris.org/bugdatab...bug_id=4748474

Fixed in the Solaris 9 X patch, which, since it includes security fixes,
is free for all:
http://sunsolve.sun.com/pub-cgi/getp...umentId=112786

|http://sunsolve.sun.com/search/docum...=1-1-4262197-1

http://bugs.opensolaris.org/bugdatab...bug_id=4262197
Fixed in Solaris 8 before release, should still be fixed in Solaris 9.

--
Alan Coopersmith * alanc@alum.calberkeley.org * Alan.Coopersmith@Sun.COM
http://blogs.sun.com/alanc/ * http://people.freedesktop.org/~alanc/
http://del.icio.us/alanc/ * http://www.csua.berkeley.edu/~alanc/
Working for, but definitely not speaking for, Sun Microsystems, Inc.

Alan Coopersmith napisa³(a):
> Any errors in /var/dt/Xerrors?

Nothing interesting. Only "Can not execute dtgreet", which I already
know ;-)

> http://bugs.opensolaris.org/bugdatab...bug_id=4748474
>
> Fixed in the Solaris 9 X patch, which, since it includes security fixes,
> is free for all:
> http://sunsolve.sun.com/pub-cgi/getp...umentId=112786

Patch #112786 is for Solaris x86. For SPARC there is patch #112785. I
have newest version of it (112785-52) and still nothing...
--
Regards,
Jaroslaw Rafa
raj@ap.krakow.pl
--
Spam, wirusy, spyware... masz do¶æ? Jest alternatywa!
http://www.firefox.pl/ --- http://www.thunderbird.pl/
Szybciej. £atwiej. Bezpieczniej. Internet tak jak lubisz.