Serial Monitor not working on Due?

Any fresh ideas? I am still stuck.

DROBNJAK:
Any fresh ideas? I am still stuck.

Tell us the things you have done so far on that second PC

Which one? One where S.M. doesn't work or one where S.M. works?

DROBNJAK:
Which one? One where S.M. doesn't work or one where S.M. works?

Have you tried anything(in general) to see if it works ?

  • I removed Due from device manager and deleted all the related drivers. Than reinstalled 1.5.5-r2
  • changed USB cable,
  • tried pressing Reset just before uploading started.
  • established that sketch works, by writing to SD Card, it only doesn't show anything on S.M.
  • changed baud speed from 9600 to much lower,
  • disconnected and disabled all the USB and serial port device, by both pulling cables out and disabling

The strangest thing is that it works on one PC and doesn't on another.

Did you try other versions of IDE except 1.5.6- r2 ?
Certainly there's something wrong with that PC ...

Yes, I tried 1.5.6-r2.

But I am sure that something is wrong with PC. Problem is how to eliminate what is wrong. I've done enough insalling and reinstalling to know that that doesn't change anything.

Question is where else to look?

DROBNJAK:
Yes, I tried 1.5.6-r2.

But I am sure that something is wrong with PC. Problem is how to eliminate what is wrong. I've done enough insalling and reinstalling to know that that doesn't change anything.

Question is where else to look?

What's your operating system ?

Windows 7, 64-bit.

I just found this, from some driver related file:

However the included ArduinoDue.inf in the drivers folder is showing:
[DeviceList]
%DESCRIPTION%=DriverInstall, USB\VID_2341&PID_003E&MI_00
[DeviceList.NTamd64]
%DESCRIPTION%=DriverInstall, USB\VID_2341&PID_003E&MI_00

Can fidling with this help? I am sure there is some switch somewhere in installation or libraries that needs to be changed.

do you have an Arduino DUE or an DigiX?
Just found that thread: http://digistump.com/board/index.php/topic,1462.0.html

I have DigiX.

But DigiX can work in Due mode. The difference is only when one is using peripherals built into DigiX, like SD card or WiFi. They behave the same regarding Serial Monitor.