Interlace mode being rejected

Alex Deucher alexdeucher at
Mon Aug 16 07:22:01 PDT 2010

On Mon, Aug 16, 2010 at 9:35 AM, Paul Gardiner <lists at> wrote:
> For several years, I've been using an X1250 ATI
> chip and the radeon driver to drive a TV via a
> VGA to SCART circuit.  A recent install is failing:
> the mode line is rejected with "interlace mode not supported".
> I thought it might be that interlace support was dropped
> from the radeon driver, but I get the same rejection
> when I build an old version of radeon, which previously
> worked. The failing install uses x server 1.8.0, whereas
> the last working on I can find record of was 1.6.5. Could
> it be that interlace support has been dropped from the
> server? Or is there some sort of config I'm missing out?

The radeon driver still supports interlaced modes, so something must
have changed in the xserver.  A quick search of the xserver commit log
doesn't really brin gup much interlace related.  Perhaps this patch is


> Cheers,
>        Paul.
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