Date: Thu, 25 Jan 2007 11:43:46 -0800 From: Nate Lawson <nate@root.org> To: Abdullah Ibn Hamad Al-Marri <almarrie@gmail.com> Cc: freebsd-acpi@freebsd.org Subject: Re: Inspiron 6400 1505e Can't get passive cooling while in AC power Message-ID: <45B90872.1000401@root.org> In-Reply-To: <499c70c0701250758x174c297fu31e8ef00751fbf32@mail.gmail.com> References: <499c70c0701201007i6d77c35bm95f25d1f3451f7a3@mail.gmail.com> <20070124201612.GD12197@poupinou.org> <499c70c0701250758x174c297fu31e8ef00751fbf32@mail.gmail.com>
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Abdullah Ibn Hamad Al-Marri wrote: > On 1/24/07, Bruno Ducrot <ducrot@poupinou.org> wrote: >> On Sat, Jan 20, 2007 at 06:07:02PM +0000, Abdullah Al-Marrie wrote: >> > Hello, >> > >> > This laptop has Centrino Duo but I can't get the passive cooling at >> all. >> > >> >> Could you please send: >> sysctl hw.acpi >> please? > > Bruno, > > Thanks for your kind prompt to make FreeBSD Mobile and ACPI much better. > > Here is the output per your request. > > hw.acpi.thermal.min_runtime: 0 > hw.acpi.thermal.polling_rate: 10 > hw.acpi.thermal.user_override: 0 > hw.acpi.thermal.tz0.temperature: 47.5C > hw.acpi.thermal.tz0.active: -1 > hw.acpi.thermal.tz0.passive_cooling: 0 > hw.acpi.thermal.tz0.thermal_flags: 0 > hw.acpi.thermal.tz0._PSV: -1 > hw.acpi.thermal.tz0._HOT: -1 > hw.acpi.thermal.tz0._CRT: 126.0C > hw.acpi.thermal.tz0._ACx: -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 Your BIOS's thermal zone doesn't specify a temperature setpoint for passive cooling (_PSV == -1). You can manually override it by setting one and enabling passive cooling via sysctl.conf: hw.acpi.thermal.tz0.user_override=1 # Enable override of BIOS values hw.acpi.thermal.tz0._PSV=100C # Override passive setpoint hw.acpi.thermal.tz0.passive_cooling=1 # Enable passive cooling Just be careful what you set _PSV to -- you don't want it higher than _CRT (critical temp) for instance. Once you do manual override, the OS will let you set any value you want but it gives a warning. -- Nate
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