analogWrite fails

[cooltrooper]

When trying to write an analog value to a pin the operation never happens.

from arduino import Arduino
arduino = Arduino('/dev/cu.usbmodem1d11')
arduino.output([13,12])
print("set analog")
arduino.analogWrite(12,255)
print("done")

Program never progresses to the second print statement

[8enmann]

I had the same problem. This means PWM is broken.