Serial port already in use (tried everything on Google)

Using Arduino IDE 1.x
1

I'm using Arduino Uno for a long time, but suddenly my Mac OS X 10.9 on a Macbook White Mid 2010 says the serial ports are already in use, tried with a different cable, nothing, tried in a different computer, worked, the problem is really the Mac.
The thing is,, even without nothing plugged on the USB ports, it still says it's already in use!
Already tried the /var/lock with 777 permissions, nothing, reset the SMC, still nothing, I think it's something with the operating system, hope anyone can help!

2

If the port is in use you should be able to use Terminal to find out by whom. If your Arduino port is /dev/cu.usbmodemfa1441 then you type "lsof" followed by the port name, like this:

lsof /dev/cu.usbmodemfa1441

Output:

COMMAND     PID USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
JavaAppli 28879 nick   52u   CHR 18,151   0t4645 6665 /dev/cu.usbmodemfa1441

In my case I see that process 28879 (Java) is using it, which sounds right as the Arduino IDE uses Java.

3

Already tried the lsof, nothing came out.

4

Are you using Vmware or something similar to run another operating system which might have taken over the port?

5

Nothing, just plain mac os x, all apps closed, seems that it's a problem with the Arduino IDE.