Karmic Koala and the Intel Mobile 4 Chipset

I “just” did the auto-upgrade …
but after that productive work wasn’t possible anymore (the CPU peaked on every click i did).
there was only software renderer available and Compiz Fusion resulted in a white screen lockup.

This chipset i’m talking about:

root@x200:~# lspci -nn | grep VGA
00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07)

After a while I figured out, that /boot/grub/menu.lst wasn’t updated as supposed,
so I just changed the load instruction for the kernel from 2.6.28-14-generic to 2.6.31-14-generic …

kernel   /boot/vmlinuz-2.6.31-14-generic root=UUID= ... ro quiet splash
initrd   /boot/initrd.img-2.6.31-14-generic

Kernel 2.6.31-14-generic IS working with xserver-xorg-video-intel 2:2.9.0-1unbunt2 (karmic)

After rebooting everything was back to normal again:
– hardware rendering is active
– compiz fusion is working
– no additional CPU load.

Further information about the X-Server in combination with Intel chipsets can be found here.