idea how to switch off usb power. does not work for me.

The plan was to make the badge display its text by switching off power.

usb-power.sh

@@ -0,0 +1,31 @@
+#!/bin/bash
+###############################################################
+# It will power on/off a usb device based on a string found in dmesg output.
+# 
+# Example for the led-badge:
+#
+# usb-power.sh off "Product: LS32 Custm HID"
+# - This code does not work with a Lenovo-T440s running Mint. Not sure why.
+###############################################################
+if [[ $2 == "" ]]; then
+	echo "Usage: $0 [on|off] DMESG_STRING"
+	exit;
+fi
+USB_DEV=$(dmesg | grep -o "usb .*: $2" | tail -n 1 | awk '{print $2}' | sed 's/://')
+if [[ $USB_DEV == "" ]]; then
+	echo "Device not found";
+	exit;
+fi
+
+echo using USB_DEV=$USB_DEV
+
+if [[ $1 == "on" ]]; then
+	echo "2000" > /sys/bus/usb/devices/$USB_DEV/power/autosuspend_delay_ms 
+	echo "on" > /sys/bus/usb/devices/$USB_DEV/power/control 
+elif [[ $1 == "off" ]]; then
+	echo "0" > /sys/bus/usb/devices/$USB_DEV/power/autosuspend_delay_ms 
+	echo "auto" > /sys/bus/usb/devices/$USB_DEV/power/control 
+else
+	echo "Unknown action: $1"
+	exit;
+fi