On Mon, Apr 03, 2006 at 04:38:06PM +0530, Saurabh Nanda wrote: > Hi, > > I have recently bought an Acer 4061NWLCi laptop and am having trouble > getting ACPI to work. I hope somoene will help me out :-) > > I am running Ubuntu Linux -- Breezy Badger 5.10. With the default > Ubuntu kernel (2.6.12) ACPI did not work at all. I did not even get > the battery status in GNOME. Then I installed the latest kernel ( > 2.6.16.1) and ACPI started working - at least partially! I could check > my CPU temperature, AC adapter status, and battery status. > > The only thing not working is the CPU fan. I tried reading through my > current(broken) DSDT and surprisingly there is no mention of a fan > anywhere! In the Thermal Zone configuration there is no mention of > _ACx (_AC0, _AC1, etc.) as well. I can post my DSDT to the list if it > would help. > > Can anyone please help me in fixing this? Running my laptop without a > fan is pretty dangerous as the CPU temperatures crosses 65 degrees > celcius at times. > > Can I declare a fan and an active cooling temperature point in the > DSDT, recompile it and hope that it would work? Has anyone else done > this kind of a thing before? Yes, only problem is to define _ON and _OFF methods in order to control the fan device. Good luck... With my own laptop (Acer TM 4102WLMi) I can only get the fan speed, but that's all. I think it's possible to write some different thresholds in order to control the cpu fan, but I don't see why this is needed (after all 65 degree celcius should be ok for a pentium-m). In the case of my Acer, the fan speed is available at 0x5d, 0x5c on the EC space and I think there are some more Acer models that define those. Cheers, -- Bruno Ducrot -- Which is worse: ignorance or apathy? -- Don't know. Don't care. - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
