freebsd stable - Jan 2005 - /etc/rc: WARNING: /dev/apmctl not found

Since a recent buildworld, i have noticed the following on my laptop.

dmesg output:
--

Starting usbd.
/etc/rc: WARNING: /dev/apmctl not found; kernel is missing apm(4)
Starting apmd.

--

My kernel:
--
# Power management support (see NOTES for more options)
device          apm
# Add suspend/resume support for the i8254.
device          pmtimer
--

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On Mon, 3 Jan 2005 10:14:27 -0500 (EST), "Mike Jakubik"
<mikej@rogers.com>
wrote:
> Starting usbd.
> /etc/rc: WARNING: /dev/apmctl not found; kernel is missing apm(4)
> Starting apmd.
> 
> --
> 
> My kernel:
> --
> # Power management support (see NOTES for more options)
> device          apm
> # Add suspend/resume support for the i8254.
> device          pmtimer
Do you also have this in /boot/device.hints:

hint.apm.0.disabled="0"
hint.acpi.0.disabled="1"

- -- 
G. Stewart - gstewart@bonivet.net

"The day Microsoft makes something that doesn't suck is probably the
day
 they start making vacuum cleaners."
       --- Ernst Jan Plugge
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> Date: Mon, 3 Jan 2005 10:14:27 -0500 (EST)
> From: "Mike Jakubik" <mikej@rogers.com>
> Sender: owner-freebsd-stable@freebsd.org
> 
> Since a recent buildworld, i have noticed the following on my laptop.
> 
> dmesg output:
> --
> 
> Starting usbd.
> /etc/rc: WARNING: /dev/apmctl not found; kernel is missing apm(4)
> Starting apmd.
> 
> --
> 
> My kernel:
> --
> # Power management support (see NOTES for more options)
> device          apm
> # Add suspend/resume support for the i8254.
> device          pmtimer
OK. A couple of basics:
1. What version are you running? I'm guessing 5.3-Stable.
2. Does /boot/loader.conf disable ACPI? How about /boot/device.hints?
   (hw.acpi.0.disabled="1")

It looks like you are starting ACPI which will block apm even if it is
in the kernel. Since APM never really starts, no /dev/apmctl is created
and ampd can't start without /dev/apmctl. (Note: You will nave /dev/apm
with either APM or ACPI.)

Do you want/need to run with APM? On older hardware it is often much
more stable than ACPI, but on newer hardware it is often getting pretty
limited and may be vanishing completely in some cases. ACPI is the way
of the future and, for new hardware may be the only way the system will
run, but, if your system does OK on APM, it may be a safer way to go for
laptops in particular. (I run ACPI on my laptop, but I may just be a bit
crazy.)
-- 
R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: oberman@es.net			Phone: +1 510 486-8634

Godwin Stewart said:
> Do you also have this in /boot/device.hints:
>
> hint.apm.0.disabled="0"
> hint.acpi.0.disabled="1"
I have whatever the default values are for 5.3. Do these need to be set
manally? Any reason for this?

Thanks.