http://bugzilla.kernel.org/show_bug.cgi?id=12476
------- Comment #20 from [email protected] 2009-02-03 14:33 ------- I've researched this further. I ran some tests on the laptops of couple of friends. They were ofcourse all different: asus, ibm and dell. Since some of them were windows only, I've tried the speed fan program from Almico. It detected many sensors but it couldn't control any fans. To make sure that the program works correctly I've also tried it on a desktop PC and I was able to control the cpu fan. Btw windows can't control my cpu fan either. After careful observation and trying the speed fan program it was clear that the fan only stops if I plug out the power cable. I've also booted an Ubuntu live cd on some of the laptops. The only laptop which allowed fan control was the ibm one. As it turns out there is a special acpi driver called "thinkpad-acpi" for it. Sadly the driver isn't official but it was created by reverse engineering acpi. So after all this I came to the conclusion that probably all the BIOS manufacturers don't allow cpu fan control. It can be controlled only by the BIOS. I think that you can close this bug since it's not a linux issue (windows can't do anything about it either). Since you have our acpidumps it'll be nice if you could look at the thinkpad-acpi driver and tell us if it's possible to create a phoenix-acpi driver :) Thanks for your attention! -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug, or are watching someone who is. ------------------------------------------------------------------------------ Create and Deploy Rich Internet Apps outside the browser with Adobe(R)AIR(TM) software. With Adobe AIR, Ajax developers can use existing skills and code to build responsive, highly engaging applications that combine the power of local resources and data with the reach of the web. Download the Adobe AIR SDK and Ajax docs to start building applications today-http://p.sf.net/sfu/adobe-com _______________________________________________ acpi-bugzilla mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
