Thanks for the instructions, after spending nearly 6 hours compiling kernels I think I've narrowed it down. R2D2:linux-git $ git bisect good 2d29c6a075787f2c1bc49b86a084d2b878f72fc4 is first bad commit commit 2d29c6a075787f2c1bc49b86a084d2b878f72fc4 Merge: 2b25c9f 0a3db1c 9fdd54f 5ec5d38 4312495 370154b 4d93915 62663ea Author: Len Brown <len.brown@xxxxxxxxx> Date: Sat Feb 7 01:34:56 2009 -0500 Merge branches 'release', 'asus', 'bugzilla-12450', 'cpuidle', 'debug', 'ec', 'misc', 'printk' and 'processor' into release So I guess the merge of the branches broke something. Let me know what else I can do to help! Cheers -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html