linux-kernel - Re: backlight control broken on Sony VGN-P21Z with staging/gma500

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Date:	Wed, 27 Apr 2011 22:45:11 +0200
From:	Joost Pjotr Vermeer <jp@...ea.net>
To:	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Cc:	jp@...ea.net
Subject: Re: backlight control broken on Sony VGN-P21Z with staging/gma500

Hi,

2011/4/13 Joost Pjotr Vermeer <jp@...ea.net>:
> I tried the new gma500 driver from staging on my Sony VGN-P21Z. It
> seems to work very nice.
>
> But backlight control does not work. It has worked with a previous
> version of the staging/gma500 driver. I can solve it by removing the
> call to acpi_video_register() from psb_driver_load() in psb_drv.c.

I retried using 2.6.39-rc4 and now I have two backlight devices:

 - /sys/class/backlight/acpi_video0 and;
 - /sys/class/backlight/psb-bl

The psb-bl one works, the acpi_video0 one does not.

      — Joost
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