From: Andrey Borzenkov <arvidjaar@mail.ru>
To: Thomas Renninger <trenn@suse.de>
Cc: toshiba_acpi@memebeam.org, linux-acpi@vger.kernel.org,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: ACPI video.c brightness handler conflicts with toshiba_acpi
Date: Mon, 27 Oct 2008 19:52:55 +0300 [thread overview]
Message-ID: <200810271953.04764.arvidjaar@mail.ru> (raw)
In-Reply-To: <200809080301.24907.trenn@suse.de>
[-- Attachment #1: Type: text/plain, Size: 1334 bytes --]
On Monday 08 September 2008, Thomas Renninger wrote:
> On Saturday 06 September 2008 09:19:59 am Andrey Borzenkov wrote:
> > On Saturday 06 September 2008, Andrey Borzenkov wrote:
> > > 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,
> >
> > Actually it is not. brightness_switch_enabled only disables event handling;
> > it still resets actual brightness on loading and creates sysfs files to
> > confuse user space.
> >
> > > still is nice for this to be handled automatically.
> It is in latest ACPI test branch queued for 2.6.28.
It is still not in rc2; is it scheduled for 2.6.28 or delayed further?
[-- Attachment #2: This is a digitally signed message part. --]
[-- Type: application/pgp-signature, Size: 197 bytes --]
next prev parent reply other threads:[~2008-10-27 16:53 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-06 7:08 ACPI video.c brightness handler conflicts with toshiba_acpi Andrey Borzenkov
2008-09-06 7:19 ` Andrey Borzenkov
2008-09-08 1:01 ` Thomas Renninger
2008-09-08 17:24 ` Andrey Borzenkov
2008-10-27 16:52 ` Andrey Borzenkov [this message]
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
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=200810271953.04764.arvidjaar@mail.ru \
--to=arvidjaar@mail.ru \
--cc=linux-acpi@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=toshiba_acpi@memebeam.org \
--cc=trenn@suse.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).