[Intel-gfx] [PATCH] drm/i915: Fix the HDMI hot plug disconnection failure (v3)
chris at chris-wilson.co.uk
Wed Nov 28 21:39:04 UTC 2018
Quoting Guang Bai (2018-11-28 21:18:13)
> On some GEN9 platforms, slowly unplugging (wiggling) the HDMI cable makes
> the kernel to believe the HDMI display is still connected. This is because
> the HDMI DDC lines are disconnected a little bit later after the hot-plug
> interrupt triggered thus an immediate edid fetch can be made. Use digital
> port live states to authorize the edid read.
You should at least comment upon why we don't historically do this and
why you now believe that it is safe.
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