drm/i915/crt: Do not rely upon the HPD presence pin
Whilst most monitors do wire up the HPD presence pin, it seems quite a few KVM do not. Therefore if we simply rely on the HPD pin being asserted to indicate a connected monitor we fail miserable, so fall back to performing a DCC query for the EDID. Reported-and-tested-by:Matthieu LAVIE <boiteamadmax@hotmail.com> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=50501 Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by:
Daniel Vetter <daniel.vetter@ffwll.ch>
parent
c3b20037
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