openSUSE 12.1
KDE 4.8 just downgraded to kde 4.7.4 r5
KDE is not loaded, even in safe mode. After login display becomes black and switches two times between different resolutions (1280 that was on login to 1024*727 that is configured in KDE) and returns to login. This happened after downgrade from KDE 4.8 to KDE 4.7 using Yast2.
yast and yast2 can be started but do not work as well as zypper
The easiest way I found to mass downgrade packages is to use qt4 yast. I am not sure exactly how to do so with zypper yet. I remove the repository in question and then view all packages under yast, and then I sort them to show all the red packages (local ones without repositories I assume, or ones out of date versions). Then I would mark all of the KDE ones as update/upgrade and it should sort them all out mostly with the solve dialogs.
Also note this might be a configuration problem. Have you tried seeing if KDE works from a fresh empty user account?
I am not sure of the upsides and downsides of using root to login but if it fails the exact same way it might be a package conflict then. Though if you still want to try a fresh normal user you can use the ncurses version of yast2 to create a new user. Login as root (to tty) and then run:
Thanks that helped to set a password and I was able to login with new user but KDE behaves the same way. If I run apper it says
~> apperQDBusConnection: session D-Bus connection created before QCoreApplication. Application may misbehave.
QDBusConnection: session D-Bus connection created before QCoreApplication. Application may misbehave.
~> Could not open library klauncher: Cannot load library /usr/lib/libkdeinit4_klauncher.so: (libxml2.so.2: cannot open shared object file: No such file or directory)
klauncher: error while loading shared libraries: libxml2.so.2: cannot open shared object file: No such file or directory
kdeinit4: Communication error with launcher. Exiting!
On 08/04/12 21:56, rafisv pecked at the keyboard and wrote:
> Thanks that helped to set a password and I was able to login with new
> user but KDE behaves the same way. If I run apper it says
>
The solution is to delete the apper package as it does not play nice
with the package system. It constantly interferes with zypper and the
YaSY package manager.
Only thing I can think of is manually downloading libxml2 and installing with rpm, which might also fail in the same way. A reinstall might be the shortest path to success.