How did you manage to connect and configure the keyboard?

Hi Yu, how are you using G13+Mac OSX + LR?

Sounds like the MIDI isn’t sleeping as it should. Knobroom should exit when you close Lightroom (actually, there is few seconds of lag when closing Lightroom, it is caused by Knobroom) After that, the process is closed and MIDI connection does not exist. If you close the lid when Lightroom is running, then is the MIDI drivers responsibility to allow computer to sleep.

You could try running this command in Terminal window, it shows you the power management events: pmset -g pslog also you can see if the syslog command contains power management information.

When you see the white LED fading in and out, the computer is in sleep and nothing should be running. If that does not happen, it is probably the MIDI driver that is causing the problem.

I could be wrong but I suspect knobroom is still running even i close MBP, I had to bootup my MBP and let the fan run at its highest speed for4-5 min to eventually cool down the machine.

I did a small test where I close my MBP without using knobroom everything’s fine.

This is great I re-installed it for the 3rd time and everything works fine. I’m now using Lightroom together with Logitech G13 on my Mac OSX. The combination just works brilliant.

Thank you so much for your help. Appreciate it.

Ok, that means that the plugin’ s server (which does the MIDI communication) is probably not starting correctly. Do you have spaces in the installation path, that is one known issue…?

Also, there might be some debug log in Console’s system.log which give a clue what’s going on.

Korg defaults should be ok, because the sliders are sending out control messages already.

Do you see Korg in the device selection dialog when starting Lightroom?

Thanks for the reply Jarno.

Downloaded the MIDIMonitor and it shows everything’s running fine. The log here: http://dl.dropbox.com/u/2709466/MIDI%20log.mMon

Is there any specific setting I need to configure within the Korg Kontrol Editor? I’m using default btw.