[intel] 1080p at 60Hz on an intel G45 chipset
Roland Scheidegger
sroland at tungstengraphics.com
Tue Jan 6 06:38:07 PST 2009
On 06.01.2009 15:12, strawks wrote:
> Hi all,
>
> I have a G45 chipset working fine at 1080p at 50Hz but i can't get it to
> work at 60Hz.
>
> The X says :
> Not using mode "1080p at 60" (mode clock too high)
>
> My modeline is defined as follow (obtained with cvt -vr 1920 1080 60) :
> ModeLine "1080p at 60" 173.00 1920 2048 2248 2576 1080 1083 1088 1120
>
> I don't really need it but just curious if I missed something (maybe a
> bad modeline for this card?) or is it just not supported by the driver
> (the chipset does support 1080p at 60Hz, win32 uses this mode by default,
> as reported by my TV).
You're not using reduced blanking, and 173Mhz is over the DVI/HDMI limit
(not that you couldn't overclock DVI to that, but that's another
topic...). You probably need to do cvt -v -r.
Roland
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