Re: [PLUG] Confounding login problem

On Wed, Jul 21, 2010 at 9:53 AM, Randall A Sindlinger <rsindlin+plug@seas.upenn.edu> wrote:

Art,

I have another thing to add. ÂAre you using nfs or autofs? ÂOn our systems, if the system
can't mount the file system, it will take an eternity to time out. ÂThis occurs even
for root, because it's trying to run quota, which is trying to look at all file systems.

Assuming he has these shares declared in /etc/fstab, the automount would occur long before login, and the timeout on that shouldn't be brutal at all.
Â

I don't know if other remote file systems like CIFS, sshfs, or others might have similar
issues or not. ÂYou mentioned kernel updates; keep in mind that samba moved from the
standalone smbfs to CIFS in the kernel (and the CIFS in the kernel implementation has known
bugs). . . o 0 (There must be too many ex-Redmond folks 'helping out' in linux these days :-P )

I've used both CIFS and NFS extensively and both were automounted from fstab before login, and never contributed to any brutal logins when the networked share was not present on the network for some reason.

Have you tried a simple "sudo aptitude purge kdm kubuntu-desktop kde4"? Then reinstall all that stuff and it might be treating you better. Sorry for the nuke approach, but that's what I'd try.
Â

-Randall

On Wed, Jul 21, 2010 at 08:11:09AM -0400, Kevin McAllister wrote:
> Hi Art,
>
> When I've had login delay problems it's typically been one of:
>
> 1. A DNS problem. (Meaning part of PAM is wanting to do some sort of DNS lookup)
> 2. A general network problem. (somehow it's trying to do something over IPv6 or something like that)
>
> Now that's for remote issues, I guess you are really talking about logging in on the console. ÂI guess I'd look into PAM to see what sort of check is being made and timing out.
>
> I assume you can login first on a tty and then recreate the problem on the KDE console and check stuff from that perspective?
>
> - Kevin
>
> On Jul 21, 2010, at 5:50 AM, Art Alexion wrote:
>
> > I can't seem to diagnose this logically as it doesn't follow the structural logic of the system as I understand it. Any places to look will be appreciated.
> >
> > A few major KDE or kernel updates ago, my desktop started taking 4-7 minutes to log in. Booting to the kdm login prompt is normally fast. The login problem is not limited to system boots, but also includes logout/login.
> >
> > While the login is delayed, I cannot access any other tty to monitor the processes. I tried a different user, but the same problem. I also tried booting an older kernel, same problem.
> >
> > Everything seems to work fine once I am logged in.
> >
> > Ubuntu 10.04
> > KDE 4.4.2
> >
> > Logging into gnome causes the same problem.
> >
> > ??????
> >
> > --
> > Art Alexion
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