Date: Fri, 10 Jan 2003 16:40:24 +0000 From: Matthew Seaman <m.seaman@infracaninophile.co.uk> To: freebsd-questions@FreeBSD.ORG Subject: Re: /dev/apm: device not configured Message-ID: <20030110164024.GB22415@happy-idiot-talk.infracaninophi> In-Reply-To: <Pine.LNX.4.44.0301101030390.25243-100000@janeway.vonbek.dhs.org> References: <Pine.LNX.4.44.0301101030390.25243-100000@janeway.vonbek.dhs.org>
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On Fri, Jan 10, 2003 at 10:35:40AM -0500, John Bleichert wrote:
> I'm trying to use apmd on my Thinkpad but I can't seem to figure it out. I
> have the support in my kernel:
>
> root:/home/johnnyb > dmesg | grep pm
> intpm0: <Intel 82371AB Power management controller> port 0xefa0-0xefaf irq
> 9 at device 7.3 on pci0
> intpm0: I/O mapped efa0
> intpm0: intr IRQ 9 enabled revision 0
> intpm0: PM I/O mapped ef00
>
> but as you can see, no /dev/apm0 (which I'm expecting to be in dmesg). If
> I try to use it, it fails:
>
> johnnyb:~ > apm -l
> apm: can't open /dev/apm: Device not configured
>
> Any hints on where I'm going wrong? I have
>
> apmd_enable="YES"
>
> in rc.conf and it doesn't seem to error out at boot time, but it doesn't
> work and I can't load it from the command line (same error about the
> unconfigured device).
You need the apm0 device in your kernel, as well as the specific
device for the particular Power management bus chipset you have:
% grep pm /var/run/dmesg.boot
apm0: <APM BIOS> on motherboard
apm0: found APM BIOS v1.2, connected at v1.2
viapropm0: SMBus I/O base at 0xe800
viapropm0: <VIA VT8233 Power Management Unit> port 0xe800-0xe80f at device 17.0 on pci0
viapropm0: SMBus revision code 0x0
ie. edit the Kernel config to add a 'device apm0' line as follows:
device apm0 at nexus? flags 0x20 # Advanced Power Management
apm0 is in GENERIC, but it's marked 'disable' by default. I think you
can enable it using the GENERIC kernel by:
ena apm0
in /boot/kernel.conf and
userconfig_script_load="YES"
in /boot/loader.conf, but as I tend to automatically build myself a
custom kernel I have never spent much time investigating. FreeBSD-5.0
might or might not work the same way, and you may find that ACPI is a
better alternative for that OS version on some motherboards.
Cheers,
Matthew
--
Dr Matthew J Seaman MA, D.Phil. 26 The Paddocks
Savill Way
PGP: http://www.infracaninophile.co.uk/pgpkey Marlow
Tel: +44 1628 476614 Bucks., SL7 1TH UK
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