This happened with me and I found that while running HW emulator (in my case it was Kermit), speed given was wrong. Speed needs to be 115200.
Please check for speed of the emulator you are running.
From: kris duff [email@example.com]
Sent: Monday, June 13, 2011 11:26 AM
To: General mailing list for gumstix users.
Subject: [Gumstix-users] How to debug new image (lcd is white no console)?
I received my brand new overo fire with the LCD and chestnut43.
I updated the MLO and ran overo-nand-desktop..
copied the new image on a sd card following the gumstix procedure and I cannot see anything on the screen nor the console (not even uboot only erratic characters). On the usb console I can see something but the speed seems to be incorrect.
if I remove the sd card, the console works fine and the default image boots (the screen is OK (but resolution is not quite good) but the touchpad seems not calibrated).
How can I debug this ? Is there any advice you can give me ?