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[Danny Piccirillo <danny.piccirillo@xxxxxxxxxx>]

acpi=noirq pnpacpi=off

no longer works in lucid (though i've never tried it before)

-- 
Booting linux crashes on 2009 White Macbook (hardware version ID "MacBook5,2") unless you use acpi=off or maxcpus=1
https://bugs.launchpad.net/bugs/341230
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Status in Linux ACPI client: In Progress
Status in Mactel Support: Confirmed
Status in “linux” package in Ubuntu: Confirmed
Status in “linux-latest-2.6” package in Debian: New

Bug description:
Binary package hint: linux-image-2.6.27-11-generic

The Macbook won't boot unless I use the acpi=off boot option.

I am using Ubuntu 8.10 Intrepid Ibex with kernel 2.6.27.11 x86 generic.
The machine's Hardware version id is Macbook5,2.
It is one of the new early 2009 white macbooks with geforce 9400 video.

I suspect this is the cause why Ubuntu won't show battery status and won't allow me to change screen brightness.
I followed the steps described here [1] and was able to solve most problems (thanks!) with the exception of the previously mentioned.

[1] https://help.ubuntu.com/community/MacBook5-1/Intrepid
Note: Not sure if the package is the right one. If it is wrong please change it.

ProblemType: Bug
Architecture: i386
DistroRelease: Ubuntu 8.10
NonfreeKernelModules: nvidia
Package: linux-image-2.6.27-11-generic 2.6.27-11.27
ProcCmdLine: root=UUID=3f0132f8-e92c-4796-9721-768d4bbfa1f5 ro quiet splash acpi=off
ProcEnviron:
 PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.27-11.27-generic
SourcePackage: linux