Public bug reported:

SRU justification:

[Impact]
When plugin HDMI cable, no HDMI output, kernel reported error:
[drm:lspcon_init [i915]] *ERROR* Failed to probe lspcon
[drm:lspcon_resume [i915]] *ERROR* LSPCON init failed on port 

[Fix]
Legacy LSPCON chip from MCA and Parade is only used for platforms,
Limit the support between GEN9 and GEN10

[Test]
Vendor Verified on hardware, HDMI output works fine.

[Where problems could occur]
The HDMI output may break.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1934864

Title:
  [SRU][OEM-5.10/H] Fix HDMI output issue between Intel GPU GEN9 and
  GEN10

Status in linux package in Ubuntu:
  New

Bug description:
  SRU justification:

  [Impact]
  When plugin HDMI cable, no HDMI output, kernel reported error:
  [drm:lspcon_init [i915]] *ERROR* Failed to probe lspcon
  [drm:lspcon_resume [i915]] *ERROR* LSPCON init failed on port 

  [Fix]
  Legacy LSPCON chip from MCA and Parade is only used for platforms,
  Limit the support between GEN9 and GEN10

  [Test]
  Vendor Verified on hardware, HDMI output works fine.

  [Where problems could occur]
  The HDMI output may break.

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