Sony Vaio Z600RE incessant fan

[Jeremy Prior]

On Tue, 2005-01-04 at 09:51 +0000, Jeremy Prior wrote:
> I've recently updated my laptop to a recent version of RELENG_5 and the
> fan is now running constantly - it's very annoying! :-)
> 
> It's a Sony Vaio Z600RE (a 500MHz Pentium 3 laptop) and was previously
> running a version of RELENG_5 from 2004/04/27.  It's now running one
> dated 2005/01/02:
> 
>         % uname -a
>         FreeBSD chagford.netcraft.com 5.3-STABLE FreeBSD 5.3-STABLE #3: Sun Jan  2 01:14:59 GMT 2005     root at chagford.netcraft.com:/usr/obj/usr/src/sys/CHAGFORD  i386 
>         
> The machine was working fine before, using ACPI, and I can still do
> Suspend/Resume (STR only).
> ...
> 
> I've put up the verbose boot.dmesg with/without ACPI at
> http://zanussi.netcraft.com/acpi/ along with a copy of my eprom ASL
> ...
> Any suggestions on how to fix this?

I know it's bad etiquette to reply to your own posts but nobody else
has! :-)

I've found a workaround for this - an S3 suspend/resume seems to reset
the fan to its normal behaviour (only cutting in when the machine gets
hot).

The problematic sysctl entries are unchanged:

        hw.acpi.thermal.tz0.active: -1
        hw.acpi.thermal.tz0.thermal_flags: 0
        hw.acpi.thermal.tz0._ACx: -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

I've put the dmesg output (with ACPI_DEBUG) taken after hibernation at
http://zanussi.netcraft.com/acpi/

Hope this helps,
jez
-- 
      Jeremy Prior  <jez at netcraft.com>  http://www.netcraft.com/
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