Bug #2465

OSX Hard Lockup When Radio Disconnected

Added by JC Wren over 4 years ago. Updated over 4 years ago.

Status:Feedback Start date:03/29/2015
Priority:High Due date:
Assignee:- % Done:


Target version:-
Chirp Version:daily Platform:MacOS
Model affected:Baofeng BF-888S


This is more or less a reiteration of issue #2301. Disconnecting the radio will always cause OSX to lock up hard. No mouse movement, keyboard non-responsive, etc. Closing the program (clover-Q) will also cause this lock-up, however it's not 100% as reliable as unplugging the radio or USB adapter.

It makes radio programming very frustrating under OSX.

Related issues

duplicates Bug #2301: OS X Freezes between walkie swaps New 02/07/2015


Updated by Jim Unroe over 4 years ago

  • Status changed from New to Feedback

Does your programming cable have a Prolific type chip in it and if it does, are you using one of the "generic" drivers linked to on the MacOS_Tips page?


Updated by JC Wren over 4 years ago

kextstat reports this is the Prolific PL-2303 driver, version 1.5.1. -- com.prolific.driver.PL2303 (1.5.1) <81 38 5 4 3>

I don't know if this is a counterfeit part or not. It's an actual Baofeng cable, but of course that doesn't mean it's an authentic Prolific part.

OSX version is 10.10.2.

Chirp is programming the radio, in case I wasn't clear on that. The lock-up will occur unplugging the radio, unplugging the cable, and usually when closing the program, regardless if the radio is powered on or not. I've not been able to make the hang occur when closing the program and I HAVEN'T opened a connection to the radio.

Updated by Tom Hayward over 4 years ago

What happens when you open/close/read/write/unplug the serial port using another serial application? Here's some instruction for doing this with screen: http://pbxbook.com/other/mac-tty.html

The reason I ask is that there are three things that can cause a complete lockup:
  1. OS bug
  2. driver bug
  3. hardware issue, such as power supply or memory failure

Chirp, as application software, does not have the permissions required to take over your system like that. My money is on the lockup being caused by your USB serial driver.

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