** Description changed:

  [Impact]
  SUT attach WD22TB4 dock, plug in two 4K monitor, the monitor resolution can't 
reach 4K 60Hz
  
  [Fix]
- Fix maximum DP source rate
+ Fix maximum DP source rate.
+ 
+ For unstable, because the patch set has been landed since 5.16-rc1 on 
mainline,
+ https://patchwork.freedesktop.org/series/93622/
+ this patch should be taken first,
+ 
https://lore.kernel.org/intel-gfx/20211026104342.198300-2-ankit.k.nauti...@intel.com/
+ 
+ Then, on U/J/OEM-5.14, apply 3fd6afb623ba) drm/i915/intel_combo_phy:
+ Print I/O voltage info,
  
  [Test Case]
  1. Connect two 4K external monitor to WD22TB4
  2. the monitor resolution can reach 4K 60Hz
  
  [Where problems could occur]
  Low

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-oem-5.14 in Ubuntu.
https://bugs.launchpad.net/bugs/1967986

Title:
  Fix ADL, WD22TB4,Dual monitors display resolution can't reach 4K 60hz

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  In Progress
Status in linux-oem-5.14 package in Ubuntu:
  New
Status in linux source package in Focal:
  New
Status in linux-oem-5.14 source package in Focal:
  In Progress
Status in linux source package in Jammy:
  In Progress
Status in linux-oem-5.14 source package in Jammy:
  New

Bug description:
  [Impact]
  SUT attach WD22TB4 dock, plug in two 4K monitor, the monitor resolution can't 
reach 4K 60Hz

  [Fix]
  Fix maximum DP source rate.

  For unstable, because the patch set has been landed since 5.16-rc1 on 
mainline,
  https://patchwork.freedesktop.org/series/93622/
  this patch should be taken first,
  
https://lore.kernel.org/intel-gfx/20211026104342.198300-2-ankit.k.nauti...@intel.com/

  Then, on U/J/OEM-5.14, apply 3fd6afb623ba) drm/i915/intel_combo_phy:
  Print I/O voltage info,

  [Test Case]
  1. Connect two 4K external monitor to WD22TB4
  2. the monitor resolution can reach 4K 60Hz

  [Where problems could occur]
  Low

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