Date: Mon, 1 Mar 2004 16:03:47 -0800 (PST) From: Nate Lawson <nate@root.org> To: Kevin Oberman <oberman@es.net> Cc: current@freebsd.org Subject: Re: [acpi-jp 3090] Update on ACPI with FreeBSD CURRENT on ThinkPad T30 Message-ID: <20040301160136.N8753@root.org> In-Reply-To: <20040301234415.53B3E5D07@ptavv.es.net> References: <20040301234415.53B3E5D07@ptavv.es.net>
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On Mon, 1 Mar 2004, Kevin Oberman wrote:
> I have not reported how ACPI is going on my systems for some time and
> there has been major improvement. I now run ACPI almost all the time.
Great.
> Things that don't work:
> - Suspend still does not turn off the LCD backlight.
> Note: DPMS allows the screen to be blanked, but this does not turn off
> the backlight, either. While Windows and BIOS (APM)can work this
> miracle, I have been unable to get the light to turn off except
> by using the lid switch and suspending turns it back on!
> sysctl hw.acpi.video.lcd0.active=0 returns:
> hw.acpi.video.lcd0.active: 1 -> 1
Try using the sysctls from the new acpi_video module to turn off the
backlight, perhaps by turning the brightness way down. If it works, put
it in /etc/rc.{suspend,resume}. If this doesn't work, it's probably
something the specific video driver for your system needs to do.
> - USB does not recover on resume (well known problem)
Yep, uhci still doesn't suspend/resume on many platforms. Linux has some
of this problem too.
> - Sound runs too fast. After resume the sound runs at the default
> clock-rate (about 53K) and can't be reset to 48K even by manually
> issuing a sysctl to do so.
This will be solved by restoring the BARs. Warner was working on this in
the p4 power tree but it's stalled a little.
-Nate
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