Comment 9 for bug 835945

I think the poor chaps at Hansol have encoded the detailed mode clock frequency as big-endian instead of little-endian. Swapping bytes 36 and 37 would give a frequency of 125.22 MHz (1280x1024@70) instead of 599.22 Mhz. I have studied a couple of other Hansol EDID dumps but I could not find any other model having this error.

I therefore made a proposal for a quirk for your model. Can you please test this kernel?
 http://alioth.debian.org/~tormod-guest/linux-image-3.2.0-3-generic_3.2.0-3.7tv_i386.deb