MIB - Mandriva International Backports

RosaFresh 2012.1 Desktop AMD 64bit

I am looking for ideas/suggestions to diagnose a problem with KDE. It refuses to start since my last lot of updates (approx 2 weeks ago) using packagkit. I can log in with KDM. The xserver starts and takes me to a terminal on a blank desktop. I think this is failsafe mode. Trying to find out what is causing the problem has been impossible for me.

The .xsession errors file reports
rxvt is unable to display UTF-8 encoding
You should use xterm instead.

I am not sure but this does not seem to be the reason for KDE not starting. I think it is more to do with xrender or xrandr2. These files have given me grief before. Any ideas on how to diagnose this. Plasma-desktop will start from the terminal but just boots into a black background with windows etc unable to be moved or resized.

Looking into xorg.log does not show much because the xserver is starting ok. Where to look for kde specific logs ?

Update
I just came across this in KDM log
QGtkStyle cannot be used together with the GTK_Qt engine

This may be causing me pain - What file should I look for to sort this out ?

My last Post did not appear in the forum- so here is the short version. This matter is resolved with the help of KDE Forums.

Rosa 2012.1 is up and running once again. Yay !

The procedure was basically

Boot into KDE "Failsafe" mode

Run "startkde" from the command line.

Look for errors. In my case libXrender and libxrandr2 were the offending packages.

Use Smart Package Manger to resolve any issues with correct versions etc.

Aby uruchomić KDE i efekty pulpitu musisz na początku zainstalować sterowniki do karty graficznej,potem restart i wszystko jest w porządku.