Comment 34 for bug 1098216
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| Seth Forshee (sforshee) wrote Re: Regression in brightness control on Lenovo Thinkpad X230 and X1 Carbon | #34 |
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0f7b58d
(Get the code!)
Nathaniel, your problem is fundamentally very similar but a little different. I suspect that if you boot without "!Windows 2012" you'll find some ACPI error messages in dmesg. I'd appreciate it if you could give this a try and then attach your dmesg so I can verify that this is correct.