Installing Ubuntu (Feisty) on a ThinkPad X22
Ubuntu 7.04 (Feisty) Just Works on the X22.
By default in the section of your screen, the DefaultDepth is 24 but X22 don't have enough video memory to enable this setting, change it to 16 and DRI will be ok. You just double your FPS under glxgears :D
Reporting by powertop, gnome is not so good for battery life and ibm_acpi neither, maybe you have to choose between comfort and some shortcuts ...