Intel GMA 900 (915G) - interlaced modes?

Krzysztof Halasa khc at
Thu Jan 4 04:15:10 PST 2007

Keith Packard <keithp at> writes:

> I don't know what the quality differences would be, although it's hard
> to imagine component not losing something over pure RGB.

Actually I fear field parity problems more. With on-chip interlaced
mode things are simple and there are no such problems.

> Interlacing is a function of the pipe (crtc), not the output, but it
> looks like we didn't put the interlace definitions into the header file:
> #define PIPECONF_PROGRESSIVE                    (0 << 21)
> #define PIPECONF_INTERLACE_FIELD_0_ONLY         (7 << 21)
> The only other mention of interlaced modes is that the vertical timing
> values count lines per field, not lines per frame and ignore the two
> half lines in interlaced modes that use half lines.

It shouldn't be a problem.

Great, I guess I will take the risk and get that Hetis "barebone".

Krzysztof Halasa

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