Ubuntu 12.04 LTS only runs 2D mode after changing MB and CPU. It appears using the wrong video driver: "Gallium 0.4 on llvmpipe (LLVM 0x300)" rather than the required "Intel" G43 version from the "xserver-xorg-video-intel" driver package. The new motherboard is a MSI Z87-G43 with a i7 CPU.
I tried lots of things and checked out about all I could find on the web. I removed the VMware drivers, nvidia en ATI divers and their configuration files without result. Creating an etc/X11/xorg.conf file with "intel" assigned to be used, the system became instable. I even did a fresh Ubuntu 12.04 install on an old HD, finding out that the meant "Intel" driver appeared to be used!
Now I'm stuck!
What should I do to get it right for my existing Ubuntu 12.04 LTS system?