I've been working through a slightly different issue with my Satellite 2410-S203, and found the following a helpful means of getting useful info about the display.
Launch X with the command:
startx -- -logverbose 5
(that's 2 hyphens, then hyphen-logverbose)
This will provide more info about the values returned by the EDID query in the XFree86.0.log file (usually in /var/log).
Hope this helps you some.
In a world without fences, who needs Gates?