Red Hat Bugzilla – Bug 63808
root password not authenticated after installation
Last modified: 2007-03-26 23:52:56 EDT
Created attachment 915099 [details]
(This comment was longer than 65,535 characters and has been moved to an attachment by Red Hat Bugzilla).
If "su" doesn't work I doubt it's a gdm bug. Must be something in how
authentication is being done.
Be sure you're "up2date" on pam and usermode.
I have this same problem (also on an IBM Netfinity 3000). I have tried to run
the pam and usermode but of course you need to be root to do so - at least I
get errors on dependencies when I try to run the rpm's. Has this bug been
I think I finally figured out what was happening...
During the installation, I de-selected MD5 and shadow password authentication,
but then I entered a 9-digit root password. The installer accepted this and
pressed on. As I understand MD5 (which is very little), passwords are limited
to 8 characters or less.
Once I rebooted the box into single user mode and ran authconfig to turn on MD5
and shadow, changed the root password and rebooted, I could login as root.
It seems to me that if you will allow users to NOT use MD5 password
authentication, you need to perform a check on the number of characters in the
root password to prevent this problem from occuring.
Hope this helps...
(downgrading from security severity)
*** Bug 63989 has been marked as a duplicate of this bug. ***
This works fine in Fedora Core 2.