LKML Archive on
help / color / mirror / Atom feed
From: Lukas Hejtmanek <>
Subject: 2.6.25-rc1 regression - IBM ACPI backlight
Date: Thu, 14 Feb 2008 11:38:01 +0100	[thread overview]
Message-ID: <> (raw)


as of 2.6.25-rc1, there is no more /sys/class/backlight/acpi_video1 which
controlled LVDS backlight on Lenovo ThinkPad T61. There is still acpi_video0
which seems to have sane values but echo N > brightness has no effect at all.

thinkpad_acpi module reports that ACPI controlled backlight is present.

Lukáš Hejtmánek

             reply	other threads:[~2008-02-14 10:38 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-14 10:38 Lukas Hejtmanek [this message]
2008-02-14 12:24 ` Henrique de Moraes Holschuh
2008-02-15 11:02   ` Lukas Hejtmanek
2008-02-15 11:50     ` Henrique de Moraes Holschuh
2008-02-15 12:07     ` Matthew Garrett
2008-02-15 12:53       ` Lukas Hejtmanek

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:

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \ \ \ \
    --subject='Re: 2.6.25-rc1 regression - IBM ACPI backlight' \

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

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).