Ccc Posted March 8, 2012 Share Posted March 8, 2012 Could anyone please help with editing DSDT to detect fan speed? Fan speed not detected by SMC monitor, HWMonitor, iStat Menus, iStat Pro. The super I/O seems to be it8502e by RW everything. my Laptop is dell inspiron 1464. chipset HM55 CPU:i5-430m (c-state p-state enabled) ATI 4330 512MB (QE/CI enabled) Lion 10.7.2 Chameleon v2.1svn r1618 FakeSMC v4 rev530 Tried add Device (SMCD) and Method (FAN0, and add ACPISensor.kext or ITEIT87x.kext to /S/L/E, but still not working. Here is the code I used before the Device (EC0): Device (SMCD) { Name (_HID, "MONITOR") Method (FAN0, 0, NotSerialized) { Store (^^EC0.FANH, Local0) Store (^^EC0.FANL, Local1) And (Local0, 0xFFFF, Local0) And (Local1, 0xFFFF, Local1) If (LNotEqual (Local0, Zero)) { If (LEqual (Local0, 0xFFFF)) { Store (Zero, Local0) } Else { Store (0x0100, Local2) Multiply (Local0, Local2, Local3) Add (Local1, Local3, Local4) Divide (0x03938700, Local4, Local5, Local6) Store (Local6, Local0) } } Else { Store (Zero, Local0) } Return (Local0) } } Here FANH and FANL are the high bits and low bits of fan speed that I can confirm in Win7 using everest, for example, FANH=0x0C, FANL=0x85, then fan speed=0x0C85 = 3205 rpm. but I couldn't understand why Divide (0x03938700, Local4, Local5, Local6). so i changed it to below, seems correct and compile passed, but still not detecting fan speed. Device (SMCD) { Name (_HID, "MONITOR") Method (FAN0, 0, NotSerialized) { Store (^^EC0.FANH, Local0) Store (^^EC0.FANL, Local1) And (Local0, 0xFFFF, Local0) And (Local1, 0xFFFF, Local1) If (LNotEqual (Local0, Zero)) { If (LEqual (Local0, 0xFFFF)) { Store (Zero, Local0) } Else { Store (0x0100, Local2) Multiply (Local0, Local2, Local3) Add (Local1, Local3, Local4) Store (Local4, Local0) } } Else { Store (Zero, Local0) } Return (Local0) } } Link to comment Share on other sites More sharing options...
jl4c Posted March 12, 2013 Share Posted March 12, 2013 am wondering if you have found a fix for this Link to comment Share on other sites More sharing options...
WaldMeister Posted March 14, 2013 Share Posted March 14, 2013 Hi, Attach the DSDT, and perhaps also all of you SSDT's extracted from within Linux or Windows. ~ Lejenk Link to comment Share on other sites More sharing options...
calmesal Posted October 16, 2013 Share Posted October 16, 2013 Hi! Is there any progress in this manner, I want to achieve the same. Here is my DSDT, SSDT and smbus information from aida64. Arkiv.zip Link to comment Share on other sites More sharing options...
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