On Thu, Nov 17, 2011 at 8:14 PM, Florian Tobias Schandinat
[off-list ref] wrote:

As you mentioned it, I had a look at this driver. It looks like viafb does it
(polarity) just the other way around than geode. So it might be wort a try to
change in

drivers/video/via/share.h:
/* 1200x900@60 Sync Polarity (DCON) */
#define M1200X900_R60_HSP       NEGATIVE
#define M1200X900_R60_VSP       NEGATIVE

to

/* 1200x900@60 Sync Polarity (DCON) */
#define M1200X900_R60_HSP       POSITIVE
#define M1200X900_R60_VSP       POSITIVE

That fixes the problem - thanks! Let me know if you'd like me to make
a patch with that change (I can do so on Monday).

It may still be worth you looking at the diagnosis - in particular I
think I may have found something that may clean up some of the
uncertainty in commit 32fab7bc

Thanks
Daniel