add fixkeyboard script

Author: poliva

keyboard/fixkeyboard.sh

@@ -0,0 +1,35 @@
+#!/bin/bash
+# for some reason my usb keyboard misses the first 1 or 2 keystrokes after
+# when it resumes after being idle for a while. The bug is caused by usb
+# autosuspend, but i don't want to fully disable it on my laptop, so here's
+# the workaround to only disable autosuspend on the USB port where the
+# keyboard is connected.
+
+DEVICE="046a:0010"
+
+# make sure this is run as root
+uid=$(id -ur)
+if [ "$uid" != "0" ]; then
+	echo "This script must be run as root"
+	exit 1
+fi
+
+busnum=$(lsusb |grep "${DEVICE}" |cut -f 2 -d " ")
+devnum=$(lsusb |grep "${DEVICE}" |cut -f 4 -d " " |sed -e "s/://")
+
+if [ -z $devnum ]; then
+	echo "Keyboard not found"
+	exit 1
+fi
+
+for f in `ls /sys/bus/usb/devices/ |grep -v ":"` ; do
+	BUSNUM=$(cat /sys/bus/usb/devices/$f/busnum)
+	DEVNUM=$(cat /sys/bus/usb/devices/$f/devnum)
+	if [ "$BUSNUM" -eq "$busnum" ] && [ "$DEVNUM" -eq "$devnum" ]; then
+		break
+	fi
+done
+
+echo "Disabling autosuspend on USB $BUSNUM:$DEVNUM, to reenable:"
+echo "echo 2 |sudo tee /sys/bus/usb/devices/$f/power/autosuspend"
+echo -1 > /sys/bus/usb/devices/$f/power/autosuspend