It may be possible as I know having a boot menu display to LCD was planned, I think the process of getting a prompt to the LCD would be a similar process, but maybe I'm missing something involved with doing so.I like the idea of having ttyUSB0 serial port on another computer, but can't we get u-boot outputs on pyra screen while booting ? It will be helpful when there serial connection is not possible.
Then there's a clear miss-understanding. There were never a reference to an AltGr key in the code but to Right Alt.They should not both return left Alt. Right Alt is an actual distinct thing from Left Alt and from AltGr.