5.1b2, configuring kernel for Thinkpad x20

[Marcin Kot]

Thanks for your reply Kevin :)

I just noticed that a new bios is out, version 2.25 dated 29. May. I'll give
this new bios a try and also update current and make world. If there is no
change, I'll stick with APM.

regards
Marcin Kot
----- Original Message ----- 
From: "Kevin Oberman" <oberman at es.net>
To: "Marcin Kot" <mailingliste at broadpark.no>
Cc: <freebsd-mobile at freebsd.org>
Sent: Thursday, May 29, 2003 5:10 PM
Subject: Re: 5.1b2, configuring kernel for Thinkpad x20


> > From: "Marcin Kot" <mailingliste at broadpark.no>
> > Date: Thu, 29 May 2003 16:35:10 +0200
> > Sender: owner-freebsd-mobile at freebsd.org
> >
> > Hi,
> >
> > I have a Thinkpad x20 which is running 5.1-BETA2. I do have som problems
> > with the computer booting up at random with the GENERIC kernel, although
all
> > boot-up options are disabled in the bios. This laptop has latest bios
and
> > embedded controller software installed. I want to recompile the kernel,
are
> > there any options I should be aware of to make acpi work correctly? I
read
> > though that ACPI support is loaded dynamically during boot. After a
random
> > boot, or after pressing the lid-switch it seems to hang and these
messages
> > are displayed:
> >
> > kernel: ACPI-0432: *** Error: Handler for [EmbeddedControl] returned
> > AE_ERROR
> > kernel: ACPI-1287: *** Error: Method execution failed
> > [\_SB_.PCI0.ISA_.EC__.AC__._PSR] (Node 0xc1f54560
> > ), AE_ERROR
> >
> > I've noticed that there are quite many sysctl settings which are
> > acpi-related.
>
> ACPI and ThinkPads usually don't get along, I'm afraid. The latest
> 5-CURRENT has some more patches that might help with this, but you
> will probably be much happier with APM. It seems to work quite well,
> with a couple of caveats.
>
> 1. Edit /boot/device.hints:
> Change hint.apm.0.disabled="1" to hint.apm.0.disabled="0"
> Add hint.acpi.disabled="1"
>
> 2. Edit rc.conf to add apm_enabled="YES"
>
> 3. Either add "device apm" to you kernel config or load it at boot time by
> adding apm_load="YES" to /boot/loader.conf.
>
> 4. Get the ps2 utility from IBM. If the system still has Windows, it is
> available there (in DOS mode). Otherwise, you can get a floppy image
> from IBM and boot that to use ps2. There are MANY power options that may
> be configured with ps2. (Quite a bit of other stuff is also configurable
> there. ps2 is the only way to configure many BIOS options on the
> X20. While the ThinkPad Configuration Utility will allow them to be
> configured with Windows, many options are NOT saved to CMOS but are
> loaded from the registry when Windows starts.)
>
> This is optional as the defaults are usually not too bad, but ps2 can be
> useful for quite a few things, so it's probably worth having.
>
> R. Kevin Oberman, Network Engineer
> Energy Sciences Network (ESnet)
> Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
> E-mail: oberman at es.net Phone: +1 510 486-8634
>