Thanks for the reply.
Here is what I did:
Repositories
I added all of the official 12.1 repositories(in addition to Packman, KDE, and GNOME) listed in the openSUSE repository website: Package repositories - openSUSE.
I did not disable any 11.4 repositories, because I was concerned that some software would require packages in older repositories. Then, I started my upgrade.
Upgrading
First, I updated all packages with a newer version. However, when doing that there were too many unresolved dependencies. So I canceled this update(did not download or install packages) and then just updated the packages that I desired(KDE, X.Org, Firefox) in small batches. Note, that my “upgrade” was more like several updates. When I did this for KDE packages, everything was fine. However, when I did for YaST and X.Org(directly after that of KDE), YaST could download the packages, but could not install them. I retried this several times, but the installations kept failing. I do not remember the error word for word for failing to install packages, but I do remember it saying something about not being able to lock a particular file. Is there a way for me to retrieve the exact error?
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Issues with Graphical Logon**
When I restarted my computer, I chose the system that I desired to use. Surprisingly, it still said 11.4, but displayed the new kernel version. As the login screen loaded, I found that it would not accept any keyboard or mouse input.
Problem with YaST Software Management Tool
Suspecting an X issue, I tried to use the failsafe login, but after trying to continue installing the packages via YaST, I received a “config ‘root’ not found” error when trying to use the Software Management tool in YaST and the SWManagement tool would not open. Interestingly, this same error printed out when trying to access the Printer tool in YaST, but still allowed me to go through the screens for Printers.
I searched online for “config ‘root’ not found”, but I did not find anything helpful. Thanks for your help.