Date: Wed, 23 Jun 2004 20:02:24 -0700 (PDT) From: Nate Lawson <nate@root.org> To: Dan Cojocar <dan@zeus.ubbcluj.ro>, "Alexandre \"Sunny\" Kovalenko" <Alex.Kovalenko@verizon.net> Cc: freebsd-acpi@freebsd.org Subject: Re: hp ze4560 thermal problem Message-ID: <20040623195954.A89232@root.org> In-Reply-To: <1088034095.812.4.camel@RabbitsDen> References: <20040603124930.GA58885@Zeus.UBBCluj.Ro> <20040617131024.GA7772@Zeus.UBBCluj.Ro> <20040623093442.P85911@root.org> <1088034095.812.4.camel@RabbitsDen>
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On Wed, 23 Jun 2004, Alexandre "Sunny" Kovalenko wrote: > On Wed, 2004-06-23 at 12:40, Nate Lawson wrote: > > On Wed, 23 Jun 2004, Dan Cojocar wrote: > > > You said that it's possible that my fan control is done by > > > something other than ACPI, how can i establish who is responsible with > > > my fans? > > > > You defined your own custom ACPI cooling objects in your ASL. The BIOS > > manufacturer did not. Therefore, on other OS's that work with the stock > > ASL (i.e. Windows), fan control is done some other way than through ACPI. > > Perhaps it's done via SMM. Do the fans ever come on while running with > > the stock ASL? Or, it's done with a custom driver via SMbus or by > > directly poking the super I/O chip. You know that "power/heat/hotkey" > > custom app that comes with just about every laptop? That's what it's > > doing. If the laptop was more ACPI-compliant, the fans would be defined > > in your ASL and you wouldn't have to use a custom ASL. > > > > As for your custom ASL, it sounds like you got things right. > > For whatever it worth: in my laptop fan control was safely tucked into > RTEP. I was following the temperature reporting trail to find it there. Just as a test, he should try this Linux app on Linux: http://sourceforge.net/projects/omke/ There's a low-priority TODO to write a similar driver for FreeBSD. It is apparently needed for control of HP and Toshiba Satellite laptops. -Nate
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