Multiple X displays with xdm broken. reason unknown

Psiuyo · n00b Joined: 22 Apr 2004 Posts: 50 Location: Calgary

So I've been running multple displays on my laptop for quite a while, recently running multiple displays via both GDM and XDM. GDM and XDM both start up properly on all the vts they are supposed to, the problem comes when trying to log in... they all want to use :0 after a user logs in.
Since the only display that works is :0 (F7), that is ok, but all others (F8+) are broken as they keep trying to connect to display :0 after logging in.

Here is the log from .xsession-errors when trying to log into display 1 on vt08.

soya · Guru Joined: 29 Jan 2004 Posts: 429

i've benn using gdm in my brother's system since long time ago. Yesterday i updated gdm with the new version in portage, reconfigured entirely and all worked ok. Since a few weeks ago i have a very large list of kde apps and something else related to the system and gnome for update, today i decided to update the system and multiple X using gdm is broken (gdmflexyserver) i can start it but when i try to open a new X it tries to open it in the current X (vts) a message window is sent to the vt7 saying it is current in use and in the vt8 an error is displayed. Some one with the same problem? what can we do?
thanks in advanced

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Caffeine · Posted: Sun Nov 14, 2004 1:20 am Post subject:

Psiuyo: I'm having the exact same issue. It's quite annoying. For some reason, the DISPLAY variable is being set to :0.0 instead of 1.0 or 2.0 (Got three running)

If anyone has any ideas, I'd love to hear them.

Psiuyo · n00b Joined: 22 Apr 2004 Posts: 50 Location: Calgary

Well, glad to see it's not just me. I wish I knew what I updated to cause the breakage, but I haven't a clue. I've tried going through and re-emerging the previous versions of recently updated packages that relate to X, but still no go. I may have missed it, or it may be something which I didn't think was X related. I figure sometime in the past two weeks.

Hopefully someone will have a fix soon

Gentree · Posted: Mon Nov 15, 2004 2:55 am Post subject:

Look at etcat -v pam .

I was getting no X at all and some comment about vt7 was about the last output to my X.log before it failed without any error msg.

I found pam-0.77-r1 was bad.

login shows amessage including <XAUTHORITY> , it seems to block X.

HTH.

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Caffeine · Posted: Mon Nov 15, 2004 5:54 am Post subject:

Anyone else using gcc 3.4.3?

soya · Guru Joined: 29 Jan 2004 Posts: 429

have you found the solution? do you think pam is broken or breaking something?

Psiuyo · n00b Joined: 22 Apr 2004 Posts: 50 Location: Calgary

Yeah, I'm using GCC 3.4.3. I thought GCC-3.4.3 would be MORE stable than its predecessors though

It's be nice if I could slot 3.4.2 and give it a try, but I'm always leary about backreving a GCC build (had bad breakage in the past)...
Guess I could try reemerging pam with 3.3 for now, but first I have to reemerge GCC 3.3 because that is currently broken as well

Gentree · Posted: Tue Nov 16, 2004 2:44 am Post subject:

FWIW I have been on 3.4.3 for a few months now and have not encountered any issues.

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soya · Guru Joined: 29 Jan 2004 Posts: 429

Gentre can you answer my question? did you find any solution or conclusion?

soya · Guru Joined: 29 Jan 2004 Posts: 429

It seems to be a problem with xhost o DISPLAY, at least in my case althought i'm not sure. I remeber playing with xhost and DISPLAY some days ago when the problem ocurred.
Hope someone can help cause i don't know what to do.
If a open any sesion with startx or gdm all goes well, i can login as a normal user an type "su -" and open any aplication. But if i login with startx -- :1 as a normal user then type "su -" and try to open any app i get an error saying can't connect to :0.0 (of course i'm not on :0.0, echo $DISPLAY tells :0.0, as root, when it should be :1.0 as i can see if i do it with the user i really loged in), after playing with xhost i could do that and open any app , but this time it is opened in my vt7 session, strange, always tries to connect to :0.0. But if i login like i always did with gdm then open a gdmflexyserver and tries to login as the same user i have loged in in vt7, i recieve in vt7 a msg saying kde already opened in vt7. but if i try to login as another user i recieve this

bulash · n00b Joined: 14 Apr 2004 Posts: 63

see here:
https://bugs.gentoo.org/show_bug.cgi?id=71430
https://bugs.gentoo.org/show_bug.cgi?id=70813

Gentree · Posted: Wed Nov 17, 2004 8:47 am Post subject:

There are threads about 3.4.3 being less good than 3.4.2

Down-grading a minor build change should not be catastrophic but look at the relevant threads before jumping in with both feet.

BTW, it's always a good idea to unmask specific version rather than a package in case you did not. I have :

soya · Guru Joined: 29 Jan 2004 Posts: 429

yes, downgrading solved the problem. Also changing editing PAM config file should solve, there are a few lines about DISPLAY and xhost that are denying it all. Thanks to all

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Psiuyo · n00b Joined: 22 Apr 2004 Posts: 50 Location: Calgary

Well, downgrading was a big headache... it works now, although it still lists all the gcc-3.4.3 entries in gcc-config, but that's another issue.

I re-emergered pam-0.77-r3 with gcc-3.4.2, but still no fix. I'm trying again with some more conservative flags, and also I'll try re-emerging xorg. Was there anything else you had to re-emerge to make it work?

bulash · n00b Joined: 14 Apr 2004 Posts: 63

Psiuyo: it is hardly a compiler issue. Read this thread and the bug reports. It is all about pam...

nyda · Apprentice Joined: 12 Aug 2004 Posts: 183

Same issue here :/

soya · Guru Joined: 29 Jan 2004 Posts: 429

psiyuo, just make sure you're using "pam-0.77"

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adsmith · Veteran Joined: 26 Sep 2004 Posts: 1386 Location: NC, USA

Editing the pam_env.conf file worked for me! thanks!

Caffeine · Posted: Sat Nov 27, 2004 12:57 am Post subject:

Editing pam_env.conf work for me also.

EOvermeer · n00b Joined: 10 May 2004 Posts: 16

Any idea what to edit in the new pam_env.conf ?

I restored the old version and indeed everything works OK now :-)

Thanks

adsmith · Veteran Joined: 26 Sep 2004 Posts: 1386 Location: NC, USA

Comment out this:

EOvermeer · n00b Joined: 10 May 2004 Posts: 16

harrison · n00b Joined: 31 Mar 2003 Posts: 13 Location: Hong Kong

I just emerged the newest version, rc3 and that worked also! But I checked the pam_env config file to find that in this new version, it is already commented out

Err at least it worked when i tried it with gdmflexiserver :oops:

soya · Guru Joined: 29 Jan 2004 Posts: 429

maybe you didn't run etc-update, in the new version both enviroment variables comes uncommented
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