Hello,
after latest dist-upgrade my KDE was unusable, because the window-manager kwin did not start. Windows had no decorations and i could not even switch input focus. So i rebootet in multi-user.target (append "3" in grub menu).
I found this in my .xsession-errors
win: error while loading shared libraries: libEGL.so.1: cannot open shared object file: No such file or directory
ksmserver(5833) KSMServer::wmProcessChange: Window manager "kwin" failed to launch
The new nvidia-driver 340.46-2 only recommends libegl1-nvidia
apt-get changelog nvidia-driver
* nvidia-driver: Recommend libegl1-nvidia and suggest libgles[12]-nvidia.
Solution: after an install everything was okay again
apt-get install libegl1-nvidia libgles2-nvidia
[ Edit: for new installs the nvidia-driver misses the nouveau blacklist and fails to update the glx alternative!
See my next posting in this thread. ]
Thanks towo` for your nice recommendations in the siduction-irc support channel.
Cheers, and have fun with siduction!
musca