2012-05-24 13:24:49

by Matthew Garrett

[permalink] [raw]
Subject: Re: [PATCH] acpi/video: Don't restore backlight to 0 at boot time

On Thu, May 24, 2012 at 12:13:40AM -0700, Keith Packard wrote:
> Matthew Garrett <[email protected]> writes:
>
> > ACPI arguably does define 0 as being off (this is exceedingly poorly
> > defined), but I'm not entirely happy with this - the firmware makes its
> > behaviour conditional on the OS version. I'd really like to see an
> > updated version of the Intel opregion spec to get a better idea of what
> > we're meant to be doing here, but the last one made public was
> > ancient.
>
> Kernel 3.4 continues to break on this machine; I'd love to know how to
> get a suitable fix upstreamed...


Still waiting for that spec.

--
Matthew Garrett | [email protected]