Yea, it was a couple of problems. Cable problems - with the rx/tx reversed, worked on one display and not the other. Made me think that they were both broken, but they just had different connector ordering - I'm using the glk-sm and glk-wbl for evaluation purposes.

The other problem was that I had ...

For some reason I can't seem to get the display to respond. It works fine on windows, but not on linux. The com port works fine at the same baud as the windows port was set with other devices, but can't seem to connect to the GLK.

Is there some setting I need to change? If anybody knows any linux ...