Hi guys. On my new notebook, Acer Travelmate 8172t there is a card reader which is always active even on battery power and uses at least 0.5w of power, constantly.
USB Device 2-1.6 : USB2.0-CRW (Generic)
on powertop and
Bus 002 Device 003: ID 0bda:0138 Realtek Semiconductor Corp.
as per lsusb
I put all usb ports on autosuspend after 2 seconds with this command:
and everything is put to sleep BUT that device.
sudo echo auto /sys/bus/usb/devices/*/power/level
sudo echo 2 /sys/bus/usb/devices/*/power/autosuspend
The only way I found is to remove the usb_storage module
but this removes every usb storage device capability to my computer.
sudo modprobe -r usb_storage
What else can I do ???