Date: Tue, 15 May 2012 19:37:01 +1000 From: Lawrence Stewart <lstewart@freebsd.org> To: Yevgen Krapiva <ykrapiva@gmail.com> Cc: freebsd-desktop@freebsd.org Subject: Re: How is monitor brightness is controlled ? Message-ID: <4FB223BD.3070208@freebsd.org> In-Reply-To: <CADGKei7u5EOEZd2vsMTKK14Fnmyo2N2xfGfo2ZMu_2yC6fgbRQ@mail.gmail.com> References: <CADGKei7u5EOEZd2vsMTKK14Fnmyo2N2xfGfo2ZMu_2yC6fgbRQ@mail.gmail.com>
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On 05/13/12 17:55, Yevgen Krapiva wrote: > Hi everyone. > > Could somebody tell me what thing in FreeBSD is managing the monitor > brightess ? Given that the function keys don't work, check if you have any relevant sysctl options to play with. Most likely to find them under hw.acpi, but try grepping "sysctl -a" output for bright or lcd to see if anything comes up. > I've got Dell Inspiron laptop, FreeBSD 9.0 RELEASE and KDE4. > Pressing the functional combintation of Fn+F4/F5 does not have any effect. > In order to understand what's wrong I need to know in what direction I > should move. Getting the fn keys working requires some ACPI voodoo I'm not familiar with, so I'll have to defer to someone else to advise on that. The info at [1] might be a good starting point. The fn keys on my Toshiba R600 laptop started working only after I loaded the acpi_toshiba.ko kernel module. I note there's no similar module for Dell's so getting them working will probably require some fiddling. Cheers, Lawrence [1] http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/acpi-debug.html
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