Date: Tue, 4 Feb 2014 06:31:32 -0800 (PST) From: Unga <unga888@yahoo.com> To: "illoai@gmail.com" <illoai@gmail.com> Cc: "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org> Subject: Re: How to disable low display brightness when power fail? Message-ID: <1391524292.69389.YahooMailNeo@web161901.mail.bf1.yahoo.com> In-Reply-To: <CAHHBGkpNMq7xp8VfGnYaXhiUFCVC0wvu8NZmPcAypkuFe-_SVw@mail.gmail.com> References: <1391507713.72310.YahooMailNeo@web161906.mail.bf1.yahoo.com> <CAHHBGkpNMq7xp8VfGnYaXhiUFCVC0wvu8NZmPcAypkuFe-_SVw@mail.gmail.com>
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>________________________________ > From: "illoai@gmail.com" <illoai@gmail.com> >To: Unga <unga888@yahoo.com> >Cc: "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org> >Sent: Tuesday, February 4, 2014 12:16 PM >Subject: Re: How to disable low display brightness when power fail? > > >On 4 February 2014 04:55, Unga <unga888@yahoo.com> wrote: >> Hi all >> >> I have a laptop running FreeBSD 9.2 and KDE4. >> >> >> When main A/C power fails, this laptop immediately reduces the display brightness. When power restores, it also immediately restore the full brightness. >> >> Because of this I cannot show a presentation without power. >> >> Therefore, how to disable becoming low bright when no main A/C power? >> >> I prefer a xorg.conf entry. > >Have a look at acpi_video(4). > >http://www.freebsd.org/cgi/man.cgi?query=acpi_video&sektion=4 > Hi There are no hw.acpi.video.X variables in this laptop: sysctl -a | grep hw.acpi.video This laptop uses Intel open source driver. Regards Unga
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