View Full Version : [SOLVED] Powering off computer with remote power button

October 15th, 2007, 05:12 AM
Is this possible?

Using the power button to execute a script to turn off the box? I know turning it on would be an exercise in futility but being able to fire off a bash script to properly shutdown the system would be very cool indeed

This is for the grey style pvr350 remote


October 15th, 2007, 06:46 AM
What I am assuming is I need to startup irexec in daemon mode, add the ability to have my mythtv account run shutdown elevated from editing sudouser (or users I forget which) then add code in .lircrc to have irexec run shutdown

would something like that work?

October 15th, 2007, 06:50 AM
Oh yeah. This is definitely possible. I will warn though, it becomes very easy to "accidentally" turn off the box when you don't want to.

This is the easiest way (I think):

First set the /sbin/shutdown SUID (this lets you issue a shutdown without needing to use sudo)
See this post for info on how to do this:

Next, you need to add an additional command to your ~/.lircrc

prog = irexec
button = power
config = shutdown -h now

That button may be a little different, check your /etc/lirc/lircd.conf to verify that is what your power button is called.

Log out and back in. Irexec is automatically started when you log in.

Press your button and go. :)

October 15th, 2007, 07:01 AM
Perfect! Worked like a charm!

I have to say your myth ubuntu project here has turned what I thought was going to be a several weekend hack job into a casual Sunday night setup.

thank you for making my weekend :)

Mythbuntu at least for me worked flawlessly once I tweaked the few settings that needed tweaking for my system. I can now watch tv from my computer room.

October 25th, 2007, 09:24 PM
Very useful! I used ubuntu earlier and there I alwasy got the shutdown dialog when pressing the Power button. But now when I am running Mythbuntu I was missing that ...

No this is not a problem anymore.


October 26th, 2007, 09:04 AM
For the really lazy, if you want a way to turn you TV back on using a remote...


I love it!