topic Re: CDE (X) not working in Operating System - HP-UX

CDE (X) not working

Joe Robinson_2 — Wed, 05 Apr 2006 11:50:10 GMT

when I start an X session, I get past the login, and to the screen where "Starting the Common Desktop Environment" along w/ the restricted rights legend shows...and then it hangs.

Background: L2000 running 11.00. I just changed the hostname on this system from the 'short' hostname to be the FQDN to fix some DNS errors that Data Protector was having, and at that point, CDE (X) quit working.

Re: CDE (X) not working

Tiziano Contorno _ — Wed, 05 Apr 2006 12:00:13 GMT

You could have lookup problems.
Try:
nslookup your.hostname.fqdn
nslookup your_ip

They must be the same.

/etc/hosts # need "IP hostname FQDN"
/etc/resolv.conf # need "domain /etc/nsswitch.conf # use DNS or files, when, how?

Regards

Re: CDE (X) not working

Joe Robinson_2 — Wed, 05 Apr 2006 12:05:41 GMT

both nslookups resolved successfully.

/etc/hosts is configured correctly.

/etc/resolv.conf is configured correctly.

/etc/nsswitch.conf configured files, then DNS

Re: CDE (X) not working

Rick Garland — Wed, 05 Apr 2006 12:41:54 GMT

In /usr/contrib/bin/X11 is 'dr_dt'
This can help diagnosis problems with X11

At 1st glance it would appear to be a lookup issue. Try stopping/starting the /sbin/init.d/dtconfig.rc

Re: CDE (X) not working

Joe Robinson_2 — Wed, 05 Apr 2006 12:57:19 GMT

Rick,

this is a production box that has open sessions from other users. Will stopping/restarting that service kill those open sessions?

Re: CDE (X) not working

Joe Robinson_2 — Wed, 05 Apr 2006 12:57:52 GMT

dr_dt didn't show any errors...

Re: CDE (X) not working

Tiziano Contorno _ — Wed, 05 Apr 2006 13:22:44 GMT

It could be that the X11 server spawned with a certain hostname, now you changed and it hangs on new sessions, due to the mismatch. You will need to restart it, losing every session. :(

As last chance: have you tried to ADD the old hostname as alias in /etc/hosts? Check also lookup and reverse lookup of the old hostname.

Regards.

Re: CDE (X) not working

Rick Garland — Wed, 05 Apr 2006 13:39:19 GMT

It will disconnect users.

Next bet is to add aliases with the short name.
In the hosts and in DNS

Re: CDE (X) not working

Joe Robinson_2 — Wed, 05 Apr 2006 13:42:16 GMT

I have the alias in the /etc/hosts; it is in the DNS server and DOES resolve correctly both from the HP and from workstations (including reverse lookups).

Re: CDE (X) not working

KapilRaj — Wed, 05 Apr 2006 16:23:39 GMT

I normally check the host resolution to fix such error's

host
host ip_address

if the results are not satisfactory , then you need to fix them.

Can you have the old hostname as an alias in /etc/hosts ?

Regds,

Kaps

Re: CDE (X) not working

Joe Robinson_2 — Wed, 05 Apr 2006 16:43:12 GMT

Problem solved. I happened to be checking a man page on uname, as the UUCP node name on my box is still the 'short' name that the system used to be. On looking at the man page, something caught my eye:

System names are normally assigned by the /sbin/init.d/hostname script at start-up, and should not be altered elsewhere.

Since I realized I'd never rebooted the system after changing the name, I gave that a shot, since starting and stopping the /sbin/init.d/dtlogin.rc didn't solve the issue. Once I rebooted, CDE started normally. I guess sometimes it helps to go back to the basics...

Re: CDE (X) not working

Joe Robinson_2 — Wed, 05 Apr 2006 16:45:11 GMT

thanks to all who gave their $0.02!!!