Hi again Andy,
Sorry to keep bugging you with this one.
Everything I've ever read about my laptop tells me that the maximum resolution of the panel is 1024x768 --- certainly that is the max resolution in Windows and with the XFree driver. However,
I tried setting the resolution to 2000x1536 as the EDID return suggests, but that just gives an "unknown mode" error (verbose log file attached).
So it seems that the EDID is returning bogus values doesn't it. I tried setting the Nvidia driver option "IgnoreEDID" "true" as suggested in the README and used the following values which seem to work with the XFree driver:
hsync 31.5 - 57.0, vrefresh 50.0 - 70.0,
However, as usual I get a screen with horizontal patterns. I'll attach the log for that with the next message.