This section is documentation for those who have the MacBook 5,2 model.
So far, the Ubuntu 9.04 distribution is being tested and results for installation are give below.
The MacBook had difficulty booting into Live CD as there was an "acpi' error. When "acpi" was set to 'off', the MacBook managed to get into Live CD and installed Ubuntu without a problem. This is where the bad news comes in...
Once you rebooted into GRUB, the keyboard failed to work!
(new info march 11 2015 bij Gerald) The "acpi" error is to avoid by doing folowing before installing Ubuntu 14: 1 Unplug power cable. 2 Remove battery out of Macbook. 3 Hold the power button for at least 5 seconds. (it gives a hard resset according Apple) 4 Put battery in the Macbook. 5 Plug in Powersuply. 6 Start installing Ubuntu 14. During install screen breaks up but wait some time and Ubuntu setup will start. If after several restarts it wont boot up then do step 1 - 5 again and it will work fine again. (end new info march 11 2015 by Gerald)
Please note, this issue is being worked on. It is recommended that you DO NOT wipe Mac OS X off the system until further notice. Troubleshooters/testers wanted!