From: Norbert Preining <preining@logic.at>
To: Zhang Rui <rui.zhang@intel.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
ACPI Devel Mailing List <linux-acpi@vger.kernel.org>
Subject: Re: regression 2.6.37 -> 2.6.38-rc1: after suspend backlight cannot be adjusted
Date: Fri, 21 Jan 2011 17:26:02 +0900 [thread overview]
Message-ID: <20110121082602.GA6039@gamma.logic.tuwien.ac.at> (raw)
In-Reply-To: <1295594998.1866.750.camel@rui> <1295594905.1866.749.camel@rui>
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On Fr, 21 Jan 2011, Zhang Rui wrote:
> does changing /sys/class/backlight/acpi_video0/brightness work for you?
Interestingly, that is gone since 2.6.37.
A diff of the dmesg between 37 and 38-rc1 (+up to git 8d99641f6c1a)
shows (besides other things):
(no idea if that is important)
-Switching to clocksource tsc
+Switching to clocksource hpet
and here it is:
-acpi device:01: registered as cooling_device2
-input: Video Bus as /devices/LNXSYSTM:00/device:00/PNP0A08:00/LNXVIDEO:00/input/input2
-ACPI: Video Device [OVGA] (multi-head: yes rom: no post: no)
+No ACPI video bus found
(also the cooling_device2 is gone)
Interestingly, adjustment via sony-laptop does work, but only
at first boot, not after suspend?!?!
> btw, please attach the acpidump of this laptop.
Attached, in gzip.
Best
Norbert
------------------------------------------------------------------------
Norbert Preining preining@{jaist.ac.jp, logic.at, debian.org}
JAIST, Japan TeX Live & Debian Developer
DSA: 0x09C5B094 fp: 14DF 2E6C 0307 BE6D AD76 A9C0 D2BF 4AA3 09C5 B094
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KERRY (n.)
The small twist of skin which separated each sausage on a string.
--- Douglas Adams, The Meaning of Liff
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prev parent reply other threads:[~2011-01-21 8:26 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-21 1:55 Norbert Preining
2011-01-21 4:11 ` Eric Dumazet
2011-01-21 4:16 ` Eric Dumazet
2011-01-21 6:46 ` Norbert Preining
2011-01-21 7:28 ` Zhang Rui
2011-01-21 7:29 ` Zhang Rui
2011-01-21 8:26 ` Norbert Preining [this message]
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