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SubjectRe: 2.6.30-rc1 (latest git): thinkpad-acpi: cannot control brightness with hotkeys (BISECTED)
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On Wed, 2009-04-15 at 07:59 +0800, Niel Lambrechts wrote:
> On 04/13/2009 10:34 PM, Henrique de Moraes Holschuh wrote:
> > On Mon, 13 Apr 2009, Niel Lambrechts wrote:
> >
> >>>> In 2.6.29.1:
> >>>> lrwxrwxrwx 1 root root 0 Apr 12 20:01 /sys/class/backlight/acpi_video0
> >>>> -> ../../devices/virtual/backlight/acpi_video0
> >>>>
> >
> > Well, that at least confirms that thinkpad-acpi doesn't have anything to
> > do with your troubles, you were using acpi video.
> >
>
> Okay, I've bisected it to:
>
> 74a365b3f354fafc537efa5867deb7a9fadbfe27 is first bad commit
> commit 74a365b3f354fafc537efa5867deb7a9fadbfe27
> Author: Matthew Garrett <mjg59@srcf.ucam.org>
> Date: Thu Mar 19 21:35:39 2009 +0000
>
> ACPI: Populate DIDL before registering ACPI video device on Intel
>

please set CONFIG_DRM_I915_KMS, reload the ACPI video driver after
loading i915 and see if it helps.

thanks,
rui



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