Arduino 1.0.1 causes Mac OS X to crash regularly. Ideas?

I am having nearly the exact same issue with my mid-2012 macbook. My mac does a kernel panic randomly when I unplug the Arduino. This is incredibly frustrating for development as it seems the only way I can reliably stop the code/serial monitor and upload a new version is to unplug the usb cable from the Arduino. The Kernel Panic happens randomly somewhere between the 2nd and 10th unplugging of the Arduino. Always on the *un*plugging.

Here is my environment: macbook 2.7Ghz Core i7 OS X 10.7.5 Arduino 1.0.2 Boards: Happens when working with both UNO and MEGA boards

This is a serious bummer and I would appreciate any recommendations if anyone has solved this problem.

Thanks, Dave

ralfieroo: the only way I can reliably stop the code/serial monitor and upload a new version is to unplug the usb cable from the Arduino.

The only time this has even been an issue for me was when the code on the Arduino was sending (too much?) Serial data at a near constant rate. Small delays helped.

Just an update:

Not to be a "quitter" but I really had too much development to keep fiddling with the mac and I had a perfectly good Ubuntu linux PC sitting right next to it. I've switched my Arduino development to that linux PC and I've had no problems. Can plug and unplug Arduino's to my heart's content.


Currently running version 152 on OSX 10.8.3 with no problems.!

Running all sorts of things on 10.7.5 and never had a problem. OTOH, I don't unplug my Arduinos while they're generating serial data, either. Hardly ever.

Has anyone found a solution, or an idea of where this is coming from yet? It just happened again using IDE version 1.0.4 and uploading a sketch. I have a late '08, 17" Macbook Pro running 10.8.3. My panic report is just as uninformative as the one already posted.

Another detail, this crash always happens when uploading to a board. In my case, a genuine Arduino UNO R3. It has not happened with the Leonardo yet.

When my Mac crashed this morning, I had only the Arduino IDE and Google Chrome running, in addition to the normal Mac processes. In order to eliminate the possibility of another USB device confusing the OS, all external devices, other than the Uno, were disconnected.

After posting the last message, I updated to IDE version 1.0.5. It took 25 or 30 uploads before my Mac crashed, but it did crash. At the time of the crash, Chrome was not running, but other USB devices were connected and iTunes was running. Also, it crashed uploading to a Leonardo. As before, the panic report did not show anything interesting.


the same problem has been biting me for a while now, with various versions of the Arduino IDE on a late 2009 MBP running Snow Leopard first and now Mountain Lion. I only use official Arduine so far, Uno and Leonardo. Both exhibit the behavior. It usually happens after a couple of uploads to the board. The Mac freezes for a few seconds (including mouse pointer and everything), then goes to a grey "sorry,there was a problem" screen, then reboots. I find it extremely annoying, since I regularly lose unsaved data due to this. Any possible workaround is greatly appreciated.

Best regards, Joerg

The same happens to me with all these combinations: macbook 17 early 2009 Osx 10.9 (but it was the same on the old one) Arduino 0.22 / Arduino 1.0.x ARDUINO MEGA2560 AND ONE R3 via USB my custom atmel atmega328P chip based via USB2SERIAL Oracle Java 7 / Open JDK 7 / Open JDK 6 Crash after some uploads, during upload. I'm working on arduino for three years. This time I upgraded several osx versions and my feeling is that it depends on osx upgrades. Infact in this period I've kept stable ide (0.22) and hardware, but only upgraded OSX, and it seems to be worse and worse. What about Arduino Team? Are they investigating about it? I think also that it should be related with RXTX native of java, but I think that it could be also caused by some bug in the IDE. bye Paolo

I found a trick to avoid OSX to crash… simply use a USB hub to connect to arduino. I’ve done this and it stop crashing.
Hope this helps someone.

Ah. Was it a USB 3.0 port that you were connecting to? That would explain why so many people weren't seeing the problem.

Exactly the same to me. With OSX 10.7 it works fine. Just since I changed to 10.9 kernel panic accour regularly while uploading. (Today it crashed the HD or better something of the "user" ... so I had to restore startdisc to be able to login again.)


1) Will test it by using an external USB Host. If it is the USB voltage supply 2) Will check usb drivers.

This is my first post here and I'd like to say Hello to everybody in the Arduino world! And I would like to say, that my English could be better, but I think it's ok.

I looked for a solution for the problem, that Mac OS-X crashes. So I found this thread. I've a late 2008 Macbook (first 13" unibody), running "Maverick". Even by using the suggested USB-Hub the macbook crashes completely and does only start again after plugging off the Arduino (Arduino Uno R3). But I do also have a late 2010 11" MacbookAir also running Maverick. And there I do not have the crash problem after several hours of using until now.

This post may not be very helpful to solve the problem actually, but it shows, that the same Arduino-hardware and software (1.0.5) can cause crashing a macbook or run stable.


I seem to be having crashes on osx with Maverics on a 13" mid 2009 unibody while uploading to arduino.
Here’s a message (attached) I get on screen after a hard reset.

Hi All

I have also been having problems with version 1.0.5 on Mavericks on a 2010 Air. I'm using a genuine Leonardo.

There seems to be two different issues:

  1. Serial data. When sending lots of data from the board to the mac using the serial monitor the mac will lock up without giving me a grey screen. Mouse moves and that's about it. If I use screen or a third party terminal this is not an issue.

  2. Programming / Compiling. As mentioned earlier when doing frequent uploads I have had the mac crash and give me a grey screen. Happened 3 times in 15 minutes yesterday evening. (See pic in previous post).

In normal day to day use my mac is reliable and does not have any issues.

I have 2 questions, what is the best method of getting these issues resolved, and is there an alternative development environment?



I just received an email yesterday from the Arduino group regarding this:

"JSSC has been released wih 1.5.6, this problem should be fixed now."


“JSSC has been released wih 1.5.6, this problem should be fixed now.”

Hi All,

I am new to this forum. I have the same problems once in a while when uploading a sketch from my iMac (Mid 2010) to an (official) Arduino UNO (Rev 3) board. What do I have to do? Do I need to switch from version 1.0.1 of the IDE to version 1.5.6? As I already installed this a couple of months ago - do I have to re-install it? Any suggestions are highly appreciated.



My symptoms were pretty much identical to what has already been reported in this thread. After suffering a couple of computer crashes today, I upgraded to Arduino IDE 1.5.6-r2. So far, I haven't been able to provoke any crashes.

[quote author=Nick Gammon link=topic=123901.msg931448#msg931448 date=1348285971] People would be screaming if the normal Arduino IDE crashed the entire computer every hour. It just doesn't. [/quote]

I'm running a Sunfounder Mega 2560 using Arduino 1.0.5 on my Mac (Mavericks) and I've crashed my system twice this morning when clicking to upload to the arduino. :(

I continue to have crashes on my Mac Book Pro with Arduino and Energia -- these occur when my program generates too much serial traffic. Perhaps I should try a third party terminal program instead of the IDE one.