Bug 882491

I'm getting a similar problem on new 18 Beta installation with Cinnamon.

Main difference is I don't get an "Authentication Failure" but instead am returned to the login screen with a green tick next to my name and a message to the effect that I'm currently logged in but I'm still stuck at the login screen.

I can successfully login as both myself and root via a terminal.

I did a "yum update" from the terminal and tried again but the result remains the same.

In case it's relevant, the installation is in a KVM instance running under Fedora 17.

I've had a chance to look at this problem more closely and have discovered what the problem was.  Even though I had selected Cinnamon as the window management system during installation, the cinnamon packages were not installed which left gdm trying to start a window manager that wasn't there and as I'd asked for cinnamon and only cinnamon there were no other window managers installed either hence I get stuck at the login screen.

Obtaining a terminal session via Ctl-Alt-? and running:

yum install cinnamon

fixed the problem and I can now log in without any problems.

Hope this helps,
Thanks
Peter

*** Bug 882492 has been marked as a duplicate of this bug. ***

I have done a fresh install of Fedora 18 (released) and found a few odd problems during the process (including firstboot's "Finish" button does absolutely nothing, very annoying).

The worst is that once I was up to where a login is prompted, I am unable to login.  The graphical installer just says that whatever desktop I try "encountered an error" and bails out (exiting the X11 server, and a new one starts and I'm back at the greeter.

So, try a text login on another TY?  Sure, and that immediately exists, reseting (clearing) the screen if I put in correct credentials (if the user/password is wrong, then I just get another login prompt without the screen clearing, of course, so it's easy to tell that I did get the credentials right).

Booting to a rescue environment (which can't find Fedora installs on encrypted disks, BTW), I'm looking at logs and find in /var/log/secure that I've successfully logged in (session opened) only to immediately see the session get closed.  This is true with any account, root or my user, etc.

I've dug through all the pam config, all the logs, the /etc/security/ /etc/default/ directories, and everything else I can think of (/etc/init/, /etc/X11/).  It's obviously something not set up right with the user accounts, that is universal (affecting all accounts), but what?

I'll keep digging.  I'm trying with SELinux disabled now, which is not an acceptable solution, of course.

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