From: Paul Bolle <pebolle@tiscali.nl>
To: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Josh Boyer <jwboyer@fedoraproject.org>,
Daniel Vetter <daniel.vetter@ffwll.ch>,
intel-gfx@lists.freedesktop.org,
"Linux-Kernel@Vger. Kernel. Org" <linux-kernel@vger.kernel.org>,
DRI mailing list <dri-devel@lists.freedesktop.org>
Subject: Re: 3.13 i915 brightness settings broken when going from docked -> undocked
Date: Tue, 04 Mar 2014 09:31:16 +0100 [thread overview]
Message-ID: <1393921876.3038.3.camel@x220> (raw)
In-Reply-To: <878usz8vmi.fsf@intel.com>
On Tue, 2014-02-25 at 10:05 +0200, Jani Nikula wrote:
> On Thu, 20 Feb 2014, Paul Bolle <pebolle@tiscali.nl> wrote:
> > On an (rather old) ThinkPad X41, which also uses i915, brightness
> > adjustments stopped working altogether in v3.14-rc1 (I haven't used its
> > docking station in the v3.14 release cycle). In v3.13.y things behave as
> > expected. So perhaps there's actually a more general problem here.
>
> I presume different problems. Does the ThinkPad X41 have gen3 graphics?
> (See e.g. /sys/kernel/debug/dri/0/i915_capabilities) If yes, it might be
> https://bugs.freedesktop.org/show_bug.cgi?id=75001
Yes, it has "gen3" graphics (a 915GM). And applying your patch
"drm/i915: use backlight legacy combination mode also for
i915gm/i945/gm" on top of v3.14-rc5 fixes the issue on that ThinkPad
X41.
Thanks,
Paul Bolle
next prev parent reply other threads:[~2014-03-04 8:31 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-20 2:20 3.13 i915 brightness settings broken when going from docked -> undocked Josh Boyer
2014-02-20 7:53 ` Paul Bolle
2014-02-25 8:05 ` Jani Nikula
2014-03-04 8:31 ` Paul Bolle [this message]
2014-03-04 8:54 ` Jani Nikula
2014-02-21 0:31 ` Josh Boyer
2014-02-23 15:50 ` Josh Boyer
2014-02-24 16:15 ` Jesse Barnes
2014-02-25 8:36 ` Jani Nikula
2014-02-27 1:38 ` Josh Boyer
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