Doesn't work KDE4 in my laptop after update from KDE3.5

[jglezplatas]

I have the 7.10 kubuntu with KDE3.5. So I would like to update my KDE to 4.0.2 and I did the next
procedure:
1.- Add one line in my sources-list
deb http://ppa.launchpad.net/kubuntu-members-kde4/ubuntu gutsy main

2.- As super user installed the next package
apt-get install kde-core

At the moment all was correct but when I try to use the KDE4 from login screen selecting it. I can see the initial procedure to start KDE4 but after a few second I have a black screen and it return to my login screen again.

If I try KDE (version 3.5) I haven't problems but if I try to load KDE4 it is impossible that it works.
What can I do?

Thanks

Javier

[monte48lowes]

Re: Doesn't work KDE4 in my laptop after update from KDE3.5

I have experienced this as well. The fix at the time was to follow the directions for installing xephyr-server and running a KDE4 session on the xephyr server. For some reason that fixed the problem.

Here are the directions I followed from http://kubuntu.org/announcements/kde-4.0.php

sudo apt-get install xserver-xephyr xterm

Xephyr :1

then this in the xephyr terminal:

/usr/lib/kde4/bin/startkde

Run the session in the terminal until the desktop loads. Then exit the session in the xephyr terminal. Finally logout and try KDE4 again.

Mike