- Allows to set the fan speed of a Dell laptop to 0 (disabled), 1 (medium) and 2 (full speed).
- The BIOS of some newer Dell laptops (Latitude E6420/E6520/E6430/E6530/E6440/E6540/...)
will override the speed you set unless you disable the BIOS control.
- I found two methods of disabling the BIOS control:
- By default
DISABLE_BIOS_METHOD1will be used. - If you want to try
DISABLE_BIOS_METHOD2edit the source code.
- By default
- On my laptop (E6420), when you disable the BIOS control over the fan some weird things happen:
- The Fn keys stop working.
- Suspend to RAM sometimes stops working: The laptop will power itself off instead of suspending.
- This happens every time on the M4600. The solution is running
dellfan 0 0before putting the machine to sleep.
- This happens every time on the M4600. The solution is running
- I found two methods of disabling the BIOS control:
- Please, if you find a new method of disabling the BIOS control, let me know it.
- There is a function that allows to discover new codes by proving (use with care).