From owner-freebsd-mobile@FreeBSD.ORG  Thu Apr 17 07:43:55 2008
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Date: Thu, 17 Apr 2008 16:43:53 +0900
From: Takashi Inoue <takash-i@sophia.ac.jp>
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To: Norberto Meijome <freebsd@meijome.net>
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Cc: freebsd-mobile@freebsd.org
Subject: Re: setting dev.acpi_ibm.0.events at boot time
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Norberto Meijome wrote:
> On Wed, 16 Apr 2008 12:48:03 +0900
> Takashi Inoue <takash-i@sophia.ac.jp> wrote:
> 
> 
>>I have a similar probrem with 7.0R on X61s.
>>
>>"dev.acpi_ibm.0.lcd_brightness=4" in sysctl.conf
>>does NOT work with xorg(gdm).
>>
>>I think changing VT reset it.
> 
> 
> lcd_brightness has never worked for me and others. The event is detected and handled by devd, but the sysctl seems DOA.
> 

I find also the value dev.cpu.#.cx_lowest are not kept.
These values are reseted to C1 after change ttyv once. Very stupid.

T. Inoue