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+dell-bios-fan-control
+
+A user space utility to set control of fans by bios on Dell 9560 (and
+some other Dell) Laptops.
+
+Use by dell-bios-fan-control 1 to let BIOS control fan speed (default),
+and dell-bios-fan-control 0 to turn BIOS control off.
+
+Presumably, you need to turn it off in order to let i8kctl or some other
+userspace fan speed daemon do the job.
+
+Just leaving it off without any control might overheat and damage your
+computer.