On 29.09.2016 23:36, Pierre de Villemereuil wrote:
Hi Mathias,
It seems you are right: entering
echo on > /sys/bus/pci/devices/0000\:00\:14.0/power/control
does tame USB to behave properly.
However, every time the AC is plugged/unplugged, this value gets overridden.
Any way to make this permanent? (I realise this would harm a tiny bit of my
battery life, but I guess not enough for me to realise it).
There's probably something like laptop-mode-tools that sets these, I'm not
really familiar, or using it myself but
I'd start looking in
/etc/laptop-mode/laptop-mode.conf
/etc/laptop-mode/conf.d/*
and try to find the configuration that enables runtime power management for usb
host while on battery.
-Mathias
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