Public bug reported:

[Impact]
Not all monitors display well after resume from restart/power off/suspend when 
connect one/two/three monitors on the dock.

[Fix]
AMD provides a series of patches fixes the issue
https://gitlab.freedesktop.org/agd5f/linux/-/commit/6285f12bc54cae5c29f2e6fe02090832b685a8e3
https://gitlab.freedesktop.org/agd5f/linux/-/commit/07b7f2dec585622b4dfd857faf605d3fd4746c11
https://gitlab.freedesktop.org/agd5f/linux/-/commit/1a0e62a5527789a8c6694ad333662944f20e8122
https://gitlab.freedesktop.org/agd5f/linux/-/commit/1e8dac8d4ab5ce50f1c12017887e2060f1bec1bb
https://gitlab.freedesktop.org/agd5f/linux/-/commit/0c0f90f24b6e7f933dd462d09c7e805cf50c38f6

agd5f/amd-staging-drm-next
6285f12bc54ca drm/amd/display: Fix wrong handling for AUX_DEFER case
07b7f2dec5856 drm/amd/display: Copy AUX read reply data whenever length > 0
1a0e62a552778 drm/amd/display: Remove incorrect checking in dmub aux handler
1e8dac8d4ab5c drm/amd/display: Fix the checking condition in dmub aux handling
0c0f90f24b6e7 drm/amd/display: Shift DMUB AUX reply command if necessary

[Test]
1. Connect one/two/three monitors with dock to AMD platform
2. Let the system into restart/power off/suspend, all monitors should all 
display after resume from restart/power off/suspend

[Where problems could occur]
Hard to evaluate, but only one commit doesn't CC stable, so we eventually will 
include those patches.

** Affects: hwe-next
     Importance: Undecided
         Status: New

** Affects: linux-oem-6.11 (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: linux-oem-6.11 (Ubuntu Noble)
     Importance: Undecided
     Assignee: AceLan Kao (acelankao)
         Status: In Progress


** Tags: jira-wtn-226 oem-priority wtn

** Also affects: linux-oem-6.11 (Ubuntu Noble)
   Importance: Undecided
       Status: New

** Changed in: linux-oem-6.11 (Ubuntu Noble)
       Status: New => In Progress

** Changed in: linux-oem-6.11 (Ubuntu Noble)
     Assignee: (unassigned) => AceLan Kao (acelankao)

** Tags added: jira-wtn-226 oem-priority wtn

-- 
You received this bug notification because you are a member of Kernel
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https://bugs.launchpad.net/bugs/2110095

Title:
  Not all monitors  connected on the dock display correctly when the
  system resumes from restart  or suspend on AMD platform

Status in HWE Next:
  New
Status in linux-oem-6.11 package in Ubuntu:
  New
Status in linux-oem-6.11 source package in Noble:
  In Progress

Bug description:
  [Impact]
  Not all monitors display well after resume from restart/power off/suspend 
when connect one/two/three monitors on the dock.

  [Fix]
  AMD provides a series of patches fixes the issue
  
https://gitlab.freedesktop.org/agd5f/linux/-/commit/6285f12bc54cae5c29f2e6fe02090832b685a8e3
  
https://gitlab.freedesktop.org/agd5f/linux/-/commit/07b7f2dec585622b4dfd857faf605d3fd4746c11
  
https://gitlab.freedesktop.org/agd5f/linux/-/commit/1a0e62a5527789a8c6694ad333662944f20e8122
  
https://gitlab.freedesktop.org/agd5f/linux/-/commit/1e8dac8d4ab5ce50f1c12017887e2060f1bec1bb
  
https://gitlab.freedesktop.org/agd5f/linux/-/commit/0c0f90f24b6e7f933dd462d09c7e805cf50c38f6

  agd5f/amd-staging-drm-next
  6285f12bc54ca drm/amd/display: Fix wrong handling for AUX_DEFER case
  07b7f2dec5856 drm/amd/display: Copy AUX read reply data whenever length > 0
  1a0e62a552778 drm/amd/display: Remove incorrect checking in dmub aux handler
  1e8dac8d4ab5c drm/amd/display: Fix the checking condition in dmub aux handling
  0c0f90f24b6e7 drm/amd/display: Shift DMUB AUX reply command if necessary

  [Test]
  1. Connect one/two/three monitors with dock to AMD platform
  2. Let the system into restart/power off/suspend, all monitors should all 
display after resume from restart/power off/suspend

  [Where problems could occur]
  Hard to evaluate, but only one commit doesn't CC stable, so we eventually 
will include those patches.

To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/2110095/+subscriptions


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