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From: Andrey Borzenkov <arvidjaar@mail.ru>
To: toshiba_acpi@memebeam.org, linux-acpi@vger.kernel.org
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: ACPI video.c brightness handler conflicts with toshiba_acpi
Date: Sat, 6 Sep 2008 11:08:33 +0400	[thread overview]
Message-ID: <200809061108.34877.arvidjaar@mail.ru> (raw)

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I have now two different devices that refer to the same hardware:

lrwxrwxrwx 1 root root 0 2008-09-06 11:04 acpi_video0 -> ../../devices/virtual/backlight/acpi_video0/
lrwxrwxrwx 1 root root 0 2008-09-06 11:04 toshiba -> ../../devices/virtual/backlight/toshiba/

Unfortunately, due to ACPI implementation the acpi_video0 one is much
inferior (as it provides only effectively two levels instead of 8);
and user level tools are apparently quite confused which one to select.

Is there any mechanism that would allow tochiba_acpi to claim brightness
for internal LCD screen that video would not attempt to grab it too?

Of course manually disabling brightness handling in video is always possible,
still is nice for this to be handled automatically.

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             reply	other threads:[~2008-09-06  7:08 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-09-06  7:08 Andrey Borzenkov [this message]
2008-09-06  7:19 ` ACPI video.c brightness handler conflicts with toshiba_acpi Andrey Borzenkov
2008-09-08  1:01   ` Thomas Renninger
2008-09-08 17:24     ` Andrey Borzenkov
2008-10-27 16:52     ` Andrey Borzenkov
2008-10-28 13:26       ` Thomas Renninger
2008-10-28 15:15         ` Rafael J. Wysocki
2008-10-28 16:22           ` Andrey Borzenkov
2008-10-29 15:54             ` Thomas Renninger
2008-10-29 16:22               ` Andrey Borzenkov
2008-10-29 17:13               ` Andi Kleen
2008-10-29 21:01                 ` Thomas Renninger
2008-11-08  3:29             ` Len Brown
2008-10-28 18:08           ` Thomas Renninger
2008-09-08  1:13 ` Zhang Rui

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