[Intel-gfx] [PATCH 6/6] drm/i915: fix VGA detect on IGDNG

[Keith Packard]

On Tue, 2009-07-28 at 15:11 +0800, Zhenyu Wang wrote:

> This introduces screen flicker which is bad, more testing takes
> me to below patch. Force detection on IGDNG desktop chip seems
> doesn't require disable DAC first, but mobile chip has trouble
> with that, so I just fallback to DDC probe instead. Any comment?

We can't require DDC on VGA; monitor switches often do not pass DDC
along. The only reliable way to detect VGA monitors is load detection.

Does the IGDNG have a reliable interrupt for VGA hotplug?

-- 
keith.packard at intel.com
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