linux-kernel - Re: i915/kms/backlight-combo mode problem

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Message-Id: <201105061823.07083@rk-nord.at>
Date:	Fri, 6 May 2011 18:23:06 +0200
From:	Melchior FRANZ <melchior.franz@...il.com>
To:	"Joey Lee" <jlee@...ell.com>
Cc:	chris@...is-wilson.co.uk, dri-devel@...ts.freedesktop.org,
	carlos@...angeworlds.co.uk, tiwai@...e.de,
	linux-kernel@...r.kernel.org
Subject: Re: i915/kms/backlight-combo mode problem

* Joey Lee -- Friday 06 May 2011:
> 於 五，2011-05-06 於 10:52 +0200，Melchior FRANZ 提到：
> > ... and changing backlight brightness worked with acpi_osi=Linux, too.
> > Unfortunately, that does no longer work now, although I haven't changed
> > anything. Pressing the brightness buttons causes some ACPI debug output,
> > but it doesn't adjust anything.

> hmm........ Takashi's patch works before, but doesn't work now?

Argh ... sorry Takashi. Joey is right. I thought I had tested that,
but apparently not. Indeed, your last patch prevents the backlight
from being turned off, but it also breaks the brightness adjustment
keys at runtime with acpi_osi=Linux. And without that it doesn't
work, anyway, just like before. I'll add some more debug messages ...



> Does that because my new patch for bko#34142 ? Could you please add
> acer-wmi to /etc/modprobe.d/blacklist then reboot machine ?

Done. No, your patch is not involved. But backing out Takashi's
patch and re-applying confirmed that it's that patch.

m.
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