[Solved] bluetooth hardware switch - Thinkpad T400

Question

Hello,
I've got a Thinkpad T400 with integrated bluetooth, but I don't really use bluetooth, so I want to disable it to save battery power.
I figured out, how to disable it via laptop-mode-tools on startup, but when I use the hardware switch for Wlan and bluetooth to turn my Wlan on and off again bluetooth starts up again.
I also figured out that I can disable bluetooth via "echo 0 > /sys/devices/platform/thinkpad_acpi/bluetooth_enable".
I want to put that command in a script, that is only executed, when the bluetooth hardware is detected.
Now I'm wondering if any of you guys knows some script, like that.
I've already had a look at the udev files, but I couldn't figure out which one will do the job.
Maybe it's the wrong way and there is a lot easier solution.
Thanks in advance, any help would be appreciated,
David
Last edited by senior_spielbergo (2011-04-02 10:20:47)

Answer 1

I do this for disabling Bluetooth on my X220 ThinkPad using Fn + F9.
I created the file /etc/acpi/actions/bluetooth.sh
#!/bin/bash
BT_RFKILL=$(rfkill list | grep tpacpi_bluetooth_sw | sed 's/\([0-9]\+\):.*/\1/')
BT_STATE=$(/usr/sbin/rfkill list $BT_RFKILL | grep "Soft blocked: yes")
if [ "x" == "x$BT_STATE" ]; then
/usr/sbin/rfkill block $BT_RFKILL
else
/usr/sbin/rfkill unblock $BT_RFKILL
fi
exit 0
And the file /etc/acpi/events/bluetoothconf
event=button/f24.*
action=/etc/acpi/actions/bluetooth.sh
Restart acpid.
# systemctl restart acpid.service
Now I press Fn + F9 to toggle bluetooth off and on.
Rfkill needs to be installed for this to work.
Last edited by David Batson (2013-03-05 13:43:37)