[Bug 112018] I7-8700 onboard HDMI port does not support 4K resolution

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=112018

--- Comment #4 from Ville Syrjala <ville.syrjala at linux.intel.com> ---
Created attachment 145756
  --> https://bugs.freedesktop.org/attachment.cgi?id=145756&action=edit
script to dump the dual mode adapter registers

Pleas install i2c-tools and run this like so:
dual_mode_dump HDMI-A-1

so that we can see the raw adapter registers.

Also please attach a dump of
/sys/kernel/debug/dri/0/i915_vbt

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