Intel GMA 950 driving 1920x1080 over DVI?

Luc Verhaegen libv at
Tue Apr 17 09:17:43 PDT 2007

On Tue, Apr 17, 2007 at 11:47:21AM -0400, Jason Tackaberry wrote:
> The biggest unknown right now is whether or not the DVI port will drive
> a signal at 1920x1080. I'm getting very conflicting information about
> this on the web. There was previously a discussion on this list (at
> about this very question, but the discussion
> seemed to wander a bit, and didn't discuss whether or not DVI
> specifically could drive 1920x1080. Some specs I'm reading indicate VGA
> can do 1920x1200 but DVI only 1600x1200. Others imply differently.

$ cvt -r 1920x1080

# 1920x1080 59.93 Hz (CVT 2.07M9-R) hsync: 66.59 kHz; pclk: 138.50 MHz
Modeline "1920x1080R"  138.50  1920 1968 2000 2080  1080 1083 1088 1111 +hsync -vsync

138.5MHz < 160Mhz, which a single link TMDS encoder is supposed to handle. 
But the maximum dotclock supported is often provided in the TMDS 
encoders config/register space.

Luc Verhaegen.

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