Re: [PATCH] drm/i915: properly compute dp dithering for user-created modes

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On 4/10/12 4:42 AM, Daniel Vetter wrote:
We've only computed whether we need to fall back to 6bpc due to dp
link bandwidth constrains in mode_valid, but not mode_fixup. Under
various circumstances X likes to create new modes which then lack
proper 6bpc flags (if required), resulting in mode_fixup failures and
ultimately black screens.

Chris Wilson pointed out that we still get things wrong for bpp > 24,
but that should be fixed in another patch (and it'll be easier because
this patch consolidates the logic).

Certainly an improvement.

Reviewed-by: Adam Jackson <ajax@xxxxxxxxxx>

- ajax
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