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SubjectRe: 2.6.30-rc1 (latest git): thinkpad-acpi: cannot control brightness with hotkeys
Date
On Sunday 12 of April 2009, Arkadiusz Miskiewicz wrote:
> On Saturday 11 of April 2009, Niel Lambrechts wrote:
> > Hi there,
> >
> > With latest git kernel, I'm no longer able to control my Thinkpad (W500)
> > brightness, although I can still control the backlight, bluetooth etc.
>
> Same problem here (but no warning) on T400. I wasn't able to get it
> working. Tried using different values (0, 1,2, 3) for brightness_mode
> without success.

The more interesting is that brightness control starts working after I suspend
to ram and resume.

Possibly related line logged after resume:
[ 8579.660535] ACPI: EC: non-query interrupt received, switching to interrupt
mode
--
Arkadiusz Miśkiewicz PLD/Linux Team
arekm / maven.pl http://ftp.pld-linux.org/

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