(If anyone knows how to get this added to the MacTel FAQ or other pages on Ubuntu’s site, let me know. I’ve had 0 luck trying to do so myself.)
Installation   of Linux Mint 9 Isadora (or Ubuntu 10.04 Lucid Lynx) onto MacBook 6,1
(sole  installation, DO NOT USE IF YOU WANT TO KEEP OS X and/or  WINDOWS!!!  Also, this is NOT for the MacBook Pro)
 
 
There is a lack of support for the MacBook 6,1 and Linux, I suppose  due to the newness of the system. While some information from Ubuntu’s  site is useful, I’ve found several things to be incomplete or in error. I  have used the following procedure on a number of occasions to install  Ubuntu and Linux Mint on my MacBook 6,1 with no problems at all. Please  make sure you read the steps completely, though, and try not to take  shortcuts. I’ve tried to document the procedure completely, but YMMV.  Also, it’s your Mac in question and your responsibility, so if you’re  not sure about something, leave Mac OS X installed.
Installation:
–  process  begins with power off
–  hold down  C key and press power button
–  immediately  insert Linux Mint 9 CD; if apple  logo and spinner are displayed, power  off and start again (you might  have to power down and back up with C  held a couple of times)
–  if screen  stays white and CD spins up, wait  about 30 seconds; Mint’s menu will  eventually show up and you can  release the C key
–  select  the top  menu option or allow the 10 second timer to expire
–  the Mint  logo should appear; it might take up to  10 minutes or more for the  system to boot into Mint completely and the  system might appear to  hang… be patient
–  once the  system is completely booted, you should  eventually see a prompt for  Restricted Hardware Driver availability
–  click on  the Hardware Driver icon, select the  Broadcom device and click  Activate; this process requires 3 to 5 minutes
–  upon  completion of the Broadcom device, don’t  bother installing Nvidia’s  driver yet
–  go ahead   and activate your wireless and connect to the internet (you may have to   click the wireless icon in the panel and start the wireless 1 or 2  times  before it works the first time)
–  wait a   few minutes and the system will probably prompt to download updates,   which is probably for the best
–  by   performing the wireless steps during installation, the system updates   and also stores the values you input, so the driver will load when your   reboot after installing
–  once   updating is complete, click on the Install Mint icon on the desktop
–  go  through the normal installation process; when  you reach the drive  partitioning, the system should allow you to  completely erase the  existing partitions and either use the entire drive  or make changes  manually
–  again, DO   NOT USE THIS METHOD if you are planning to keep OS X and/or Windows;   you will not like the results
–  the   system will run through the installation process and finally report   completion
–  after  selecting  Restart, the system will process through the normal shutdown  procedure  to the point where it ejects the CD
–  after   removing the CD, press and hold the power button for several seconds   until the power is off (we’ll have to fix that problem later; it’s   simple but requires a minor change)
Initial  Configuration after Installation:
–  turn the  power  back on
–  the  screen may  stay blank for up to 30 seconds so be patient
–  once the  boot process begins, it is pretty quick  and your system should be up  and waiting for login within a minute
–  the  following steps should fix the problem that  requires you to manually  push the power button during shutdown or  restart…
–  use Menu ?   Terminal and enter “gksu gedit /etc/default/grub” (without quotes);   enter your system password if prompted
–  find the  line that says  GRUB_CMDLINE_LINUX_DEFAULT=”quiet splash”
–  change  the line to read  GRUB_CMDLINE_LINUX_DEFAULT=”quiet splash reboot=pci”
–  double-check  that you have correctly entered the  above and have included the proper  quotes
–  save and  then exit from gedit
–  still in  the Terminal, enter “gksu update-grub”  (without quotes); you should see  a few brief messages informing you that  it found various files
Sound  Configuration:
–  my  experience with both Ubuntu 10.04 (Lucid  Lynx) and Linux Mint 9 is that  the sound is actually muted in multiple  ways when the system first  boots; you can test the following method with  the live CD prior to  installation if you want to prove it works on your  system
–  start  Firefox  and browse to a radio station or play a media file that has a  sound  track of at least several minutes; start playing the track
–  click  Menu ? Terminal
–  in the  Terminal type “alsamixer” (again, without  the quotes)
–  use the  left  and right arrow keys to move to the Surround with MM above it and  type M  to unmute the surround
–  now move   to the right to the Surround that shows 00<->00 and use the up   arrow to raise the volume until you can hear it
–  you might  need to tinker with the settings, but I  had headphones working this  same way; you can also change Front  Sp(eaker) setting, but the sound  quality doesn’t seem as good as  Surround
–  type ESC  to  exit; you can now control volume using the speaker icon in the panel  and  the volume control on most media player apps
–  please  try this method first; I used all of the  other methods that were  recommended and discovered this one completely  by accident

Graphics  Updating:
–  use Menu ?  Terminal to open a Terminal window  and type “glxgears” (without  quotes)
–  every 5   seconds or so you’ll see an update showing the frame rate; my MacBook   shows around 2900 frames in 5.0 seconds prior to updating the graphics   driver
–  in the  panel,  click on the hardware driver installation icon or click Menu ?   Administration ? Hardware Drivers
–  click on   the Nvidia driver for version 173 and then click Activate; I’m   activating the older version first as I’ve had some issues with going   straight to the newer version
–  this   takes several minutes to activate usually so do something to help reduce   your stress; remember, I’m doing this procedure as I go along on my   system and everything is being typed on my MacBook under Mint 9
–  when  complete, the window will show the message  “You need to restart the  computer to activate this driver” near the  bottom
–  close  everything  down nicely and then restart the system; remember, you’ll  have to  manually power the system off so wait until the logo animation  has  stopped for at least 30 seconds and then press the power button for   about 5 seconds or so
–  when the   system starts back up, the logo will appear different and you’ll hear   the Mint(y) sound when the login appears

Graphics   Confirmation and Current Version Update:
–  run Menu ?   Terminal and enter “glxgears” (without quotes)
–  you  should see an update in the Terminal every 5  seconds; my MacBook now  shows approximately 14,300 frames every 5  seconds, about 6 to 7 times  what it was prior to the update above (this  is before we’ve changed  anything at all on the Nvidia display  configuration)
–  now,  repeat the  step above to install Hardware Drivers, except we’ll choose  the  “version current” option this time; this procedure may take several   minutes again
–  when  complete,  close everything down nicely and restart the machine; the  system should  restart this time with no interaction from you
–  run Menu ?  Terminal and enter “glxgears”  (without quotes)
–  my system  now  shows about 16,300 frames every 5 seconds; YMMV
–  if you’d  like to tweak the video settings you  can now do so using Menu ?  Administration ? Nvidia X Server Settings
–  I don’t  really have any reason to touch these as  everything is currently set to  a value that works for me; the only  point of interest is that my core  temp is 54 C unloaded and rising  through 92 C with glxgears running
–  if   temperature becomes an issue to you (as noted by discoloration of your   white MacBook or through graphics slowdown), use Menu ? Terminal and   issue the following command: “echo 3000 | sudo tee -a   /sys/devices/platform/applesmc.768/fan1_min”; this sets the fan speed to   3000
–  above  3500 or  so, the fan is audible but doesn’t seem to be a problem
–  this is a  known issue with the drivers and will  probably be corrected as more of  the 6,1 MacBooks get into the right  hands
See https://help.ubuntu.com/community/MacBook6-1/Karmic for more   suggestions if you find things that don’t work; this guide didn’t really   help me too much other than the reboot issue and the fan speed