Hi, I discovered that the thinkpad-acpi module does not recognize the second fan on my Thinkpad P50. I discovered some support for a second fan in the source code, so I hard-coded the 'second_fan' bit to 1 an added some functions to expose a second PWM interface. This way I managed to control both fans individually. As I mentioned, this code is just a hack and what's totally missing is some detection of the second fan. I would appreciate some help there. Here is the patch: http://pastebin.com/ymDwN4hj Regards, Matthias Hochsteger PS: The P50 also has HKEY version 0x200. I could do some testing there if needed. ------------------------------------------------------------------------------ Find and fix application performance issues faster with Applications Manager Applications Manager provides deep performance insights into multiple tiers of your business applications. It resolves application problems quickly and reduces your MTTR. Get your free trial! http://pubads.g.doubleclick.net/ gampad/clk?id=1444514301&iu=/ca-pub-7940484522588532 _______________________________________________ ibm-acpi-devel mailing list ibm-acpi-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/ibm-acpi-devel