Robopeak provide a special RPi build and kernel with driver for their usb displays.
when I run rpi-update this kernel is replaced and the display no longer functions.
Currently I can copy the original kernel over, and the display works again.
apparently Notro's drivers are now part of the official kernel.**
Is there a better workaround?
**longer discussion here:
Console Boot with 2.8" LCD TFT USB Robopeak? Possible ?
http://www.raspberrypi.org/forums/viewt ... 61#p735061