[SOLVED]Cannot login from login manager, KDM

Message

jonaswidarsson · Post by **jonaswidarsson** » Thu Oct 25, 2007 9:55 pm

Hello hi there... It's been like three years since I logged in here, and my account (the profile) was still here. How generous... My posts are all gone, but who cares. They are outdated

I am installing gentoo on my new zepto laptop and I have a problem that I have never run into with gentoo before. I have two users on this install: root and jonas.

Both users are able to log in to vt1 (is that what it's called, when the init scripts are done and one can log in without X?).
I can start kde from root in vt1 via command `startkde`
I can start kdm from root in vt1 via command `kdm`
I can start xdm from root in vt1 via command `/etc/init.d/xdm start` and that leads to KDM.

So both KDM and KDE are "functional" in the sense that they run...

But any time I try to log in to jonas or root via KDM, I get "Login failed".
I tried to use xdm too (the ugly one you know) and that gave the same result. Can't login at all.

I have upgraded to latest pam tonight and rebooted but no luck.

I have a secret too! I am actually not using KDE from gentoo. I have been pulling KDE from svn for about 18 months now so I thought I'd set up gentoo to use my compiled KDE without emerging any kde-related ebuilds at all. But, since the problem goes for xdm as much as for kdm, I think I have a system issue that's got nothing to do with my little trick. And I don't know the difference between logging in from KDM/xdm and from login@vt1.

Oh, the logs!
tail /var/log/everything/current:

Code: Select all

Oct 25 23:36:21 [   ] pam_unix(xdm:session): session opened for user jonas by jonas(uid=0)
Oct 25 23:36:33 [   ] pam_unix(xdm:session): session closed for user jonas
Oct 25 23:36:47 [   ] pam_unix(xdm:session): session opened for user root by root(uid=0)
Oct 25 23:37:03 [   ] pam_unix(xdm:session): session closed for user root

That's all I can see. Both events of "session closed" are against my will, but no error messages...

If I set up kdm to autologin jonas, then I get a popup saying something similar to "Authentication failed" with an OK-button.

Anyone?

grooveman · Post by **grooveman** » Fri Oct 26, 2007 2:56 am

Root login is disabled by default for KDM. You have to hack your kdmrc to enable it.

As for Jonas, are you certain that he owns all the files in his home directory? Check the perms on the directory itself, and the .xinitrc and any other significant files (especially hidden ones) like .kde, etc.

Also -- try blowing away the contents of /tmp. Occaisionally, stale data builds up there that can do this.

dedalu · Post by **dedalu** » Fri Oct 26, 2007 2:57 am

Same here. Is a pam problem, I think:

Code: Select all

Oct 26 00:33:30 dedalu kdm: :0[17415]: PAM unable to dlopen(/lib/security/pam_nologin.so)
Oct 26 00:33:30 dedalu kdm: :0[17415]: PAM [dlerror: /lib/security/pam_nologin.so: symbol pam_syslog, version LIBPAM_EXTENSION_1.0 not defined in file libpam.so.0 with link time reference]
Oct 26 00:33:30 dedalu kdm: :0[17415]: PAM adding faulty module: /lib/security/pam_nologin.so
Oct 26 00:33:30 dedalu kdm: :0[17415]: PAM unable to dlopen(/lib/security/pam_env.so)
Oct 26 00:33:30 dedalu kdm: :0[17415]: PAM [dlerror: /lib/security/pam_env.so: symbol pam_syslog, version LIBPAM_EXTENSION_1.0 not defined in file libpam.so.0 with link time reference]
Oct 26 00:33:30 dedalu kdm: :0[17415]: PAM adding faulty module: /lib/security/pam_env.so
[...] a lot more
Oct 26 00:40:01 dedalu cron[1279]: PAM unable to dlopen(/lib/security/pam_unix.so)
Oct 26 00:40:01 dedalu cron[1279]: PAM [dlerror: /lib/security/pam_unix.so: symbol pam_modutil_getlogin, version LIBPAM_MODUTIL_1.0 not defined in file libpam.so.0 with link time reference]
Oct 26 00:40:01 dedalu cron[1279]: PAM adding faulty module: /lib/security/pam_unix.so
Oct 26 00:40:01 dedalu cron[1279]: PAM unable to dlopen(/lib/security/pam_limits.so)
[...] etc.

I can not restart the computer now, so I am trying a revdep-rebuild...

dedalu · Post by **dedalu** » Fri Oct 26, 2007 4:38 am

A pam rebuild and /etc/init.d/xdm stop; killall kdm; /etc/init.d/xdm start; solved everything for me.

jonaswidarsson · Post by **jonaswidarsson** » Fri Oct 26, 2007 8:09 am

dedalu wrote:A pam rebuild and /etc/init.d/xdm stop; killall kdm; /etc/init.d/xdm start; solved everything for me.

As our logs differ quite much, I don't think we have nearly the same issue, or I mean "had"

since yours is solved.

I am not at the computer until about 7 - 8 hours but then I'll recheck the permissions. So far it is a clean user account added with "adduser", and KDE was installed via kdesvn-build after that.

Reading my post again I am surprised that I didn't seem to test starting kde from jonas. I must have been tired. Further reports on that later.

Thank you guys for helping out!

jonaswidarsson · Post by **jonaswidarsson** » Fri Oct 26, 2007 7:49 pm

Hm strange. Now it works, and I don't know what dit it...

tarpman · Post by **tarpman** » Fri Oct 26, 2007 9:43 pm

If your problem has been fixed, please edit your original post and add [SOLVED] to the title.

jonaswidarsson · Post by **jonaswidarsson** » Fri Oct 26, 2007 10:14 pm

Well, Solved isn't exactly the right term, but since there is no problem to investigate anymore I am fine. Would have been nice to know wy it went away. Well well...

Morris · Post by **Morris** » Wed Mar 04, 2009 8:52 am

Hello everybody,

dedalu wrote:A pam rebuild and /etc/init.d/xdm stop; killall kdm; /etc/init.d/xdm start; solved everything for me.

I had the same problem after upgrading to pam-1.0.1. The hint from dedalu solved it for me. Note that just "/etc/init.d/xdm restart" was not enough, the "killall kdm" seems to be necessary.

Best,
Morris