Apple M9179LL/A 30" Widescreen LCD with rv280
Benjamin Herrenschmidt
benh at kernel.crashing.org
Sat Feb 26 16:48:12 PST 2005
On Sat, 2005-02-26 at 18:14 +0100, Morten Sylvest Olsen wrote:
> Funny how problems always comes in twos :) I have more or less the same problem wrt. to my 1536x2048 monitor. I found that it is possible to download a spreadsheet from VESA which calculates using the CVT standard instead of the old GTF formula. You can
> find it at: http://www.vesa.org/Public/CVT/CVTd6r1.xls (you can read it using OpenOffice)
>
> It doesn't generate modelines directly, but you can derive them from the values of sync, backporch and frontporch (or type them into
> http://www.hut.fi/Misc/Electronics/faq/vga2rgb/calc.html).
>
> One thing I did notice was that it seems reduced blanking modes are supposed to be signified with +hsync -vsync, and I am
> not sure for my monitor that X does the correct thing with the mode obtained from the EDID data from the monitor.
Interesting... X (and the kernel too) have a problem with the EDID
obtained from Apple recent monitors too... They generate a mode that
doesn't sync on the monitor. I'm waiting for Apple to ship a 23" I just
ordered, so hopefully, I'll be able to investigate myself tho...
Ben.
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