Hi,
Frequently, ie more often than not when I open the arduino environment, the environment screen is completely smudged. I can click on menus and they will function although I am unable to read any text. Other programs function normally.
I often get a clue that this is going to happen when I start the arduino software and see some black pattern at the upper right desktop.
This happened often with Arduino 12 and more frequently with 13.
I have tried shutting down various other programs including Chrome and outlook with no improvement.
I have made sure that pins 0 and 1 are disconnected when uploading a sketch, again with no effect.
I addition I have reinstalled the software and the java runtime environment with no effect.
Any suggestions would be appreciated.
Iain Grant