Date: Mon, 18 Jun 2012 03:07:25 +0900 (JST) From: Mitsuru IWASAKI <iwasaki@jp.FreeBSD.org> To: kob6558@gmail.com Cc: freebsd-acpi@freebsd.org Subject: Re: [CFT] acpi_ibm event handler Message-ID: <20120618.030725.95800960.iwasaki@jp.FreeBSD.org> In-Reply-To: <CAN6yY1uKxzUU9T-eO7XtoXwOrWhOo3gME0AnfMCW_qTryqj6JQ@mail.gmail.com> References: <20120616.025804.48535013.iwasaki@jp.FreeBSD.org> <4FDBE1BA.3070204@gmail.com> <CAN6yY1uKxzUU9T-eO7XtoXwOrWhOo3gME0AnfMCW_qTryqj6JQ@mail.gmail.com>
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Hi, > Brightness can be adjusted using "acpi_call -p '\VBRC' -i n" (where n > is 0-15). acpi_call must be installed from ports. But this command > sets absolute brightness, so it can't raise or lower the brightness > unless you have the current value and I don't know how to get that. > This is the case on my T520. X61 has the same problem. There are 2 video device object in ACPI namespace, \_SB.PCI0.VID (vgapci attached but brightness control doesn't work) and \_SB.PCI0.AGP.VID (has VBRC method but no driver attached because of wrong _ADR). The custom DSDT with the following patches and acpi_video(4) now can adjust brightness level :) http://people.freebsd.org/~iwasaki/acpi/tpx61.asl.diff If you want to make the custom DSDT, I can help you. Thanks!
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