Cameras not working on XO-1s

[James Cameron]

The firmware self-test of the camera does not "fail" every symptom, it
can't tell if the image is good, that's up to you.

Also, the firmware self-test does not use the camera in the same way
that Linux can, so the symptoms can be different.

If you need to diagnose beyond checking the camera connector, the next
thing to try is swapping cameras.  Please use electrostatic discharge
precautions.

-- 
James Cameron
http://quozl.linux.org.au/