Date: Mon, 25 Aug 2014 12:40:47 -0400 From: John Baldwin <jhb@freebsd.org> To: Adrian Chadd <adrian@freebsd.org> Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r270516 - head/sys/dev/drm2/i915 Message-ID: <128105708.pbS1lOrkgx@ralph.baldwin.cx> In-Reply-To: <201408250503.s7P53Axo057720@svn.freebsd.org> References: <201408250503.s7P53Axo057720@svn.freebsd.org>
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On Monday, August 25, 2014 05:03:10 AM Adrian Chadd wrote: > Author: adrian > Date: Mon Aug 25 05:03:10 2014 > New Revision: 270516 > URL: http://svnweb.freebsd.org/changeset/base/270516 > > Log: > i915 driver - enable opregion handle; program CADL. > > add opregion handling for drm2 - which exposes some ACPI video > configuration pieces that some Lenovo laptop models use to flesh out which > video device to speak to. This enables the brightness control in ACPI to > work these models. > > The CADL bits are also important - it's used to figure out which ACPI > events to hook the brightness buttons into. It doesn't yet seem to work > for me, but it does for the OP. FWIW, on my Lenovo X220, this completely fixes the brightness buttons both in and out of X once i915kms is loaded. -- John Baldwin
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