Improve Laptop Battery Life (Closes: #898629)
I've found Fedora28 tries to improve battery life on laptop. See https://docs.fedoraproject.org/f28/release-notes/sysadmin/Kernel.html#sect-kernel-battery There are three points. 1. A new SATA link-powermanagement-policy has been written which mirrors Windows defaults: med_power_with_dipm, this has been merged for kernel 4.15, as part of this change this new policy will be the default on all Intel mobile chipsets. This saves aprox. 1.0 - 1.5 Watts of power on an idle laptop. 2. Enable Intel HDA codec power-saving by default with a 1 second timeout. This saves aprox. 0.4 Watts of power on an idle laptop. 3. Enable USB autosuspend for USB bluetooth receivers by default. If all other USB devices on the laptop also have USB auto-suspend enabled (which typically is true) this saves aprox. 0.4 Watts of power on an idle laptop.
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