Public bug reported:

[Impact]
AMD GPU hang when screen off/on.
error log:
kernel: [drm:dc_dmub_srv_wait_idle [amdgpu]] *ERROR* Error waiting for DMUB 
idle: status=3

[Fix]
Keep a PHY active when detecting DP signal + DPMS active.

[Test]
Tested on 3 AMD platforms, GPU works fine.

[Where problems could occur]
Low risk, the fix is in v6.4-rc1.

** Affects: hwe-next
     Importance: Undecided
     Assignee: AaronMa (mapengyu)
         Status: In Progress

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: In Progress

** Affects: linux-oem-6.1 (Ubuntu)
     Importance: Undecided
         Status: In Progress

** Affects: linux (Ubuntu Jammy)
     Importance: Undecided
         Status: In Progress

** Affects: linux-oem-6.1 (Ubuntu Jammy)
     Importance: Undecided
         Status: In Progress

** Affects: linux (Ubuntu Lunar)
     Importance: Undecided
         Status: In Progress

** Affects: linux-oem-6.1 (Ubuntu Lunar)
     Importance: Undecided
         Status: Invalid


** Tags: oem-priority originate-from-2023959 sutton

** Tags added: oem-priority originate-from-2023959 sutton

** Also affects: linux-oem-6.1 (Ubuntu)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Jammy)
   Importance: Undecided
       Status: New

** Also affects: linux-oem-6.1 (Ubuntu Jammy)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Lunar)
   Importance: Undecided
       Status: New

** Also affects: linux-oem-6.1 (Ubuntu Lunar)
   Importance: Undecided
       Status: New

** Changed in: linux-oem-6.1 (Ubuntu Jammy)
       Status: New => In Progress

** Changed in: linux-oem-6.1 (Ubuntu)
       Status: New => In Progress

** Changed in: linux-oem-6.1 (Ubuntu Lunar)
       Status: New => Invalid

** Changed in: hwe-next
     Assignee: (unassigned) => AaronMa (mapengyu)

** Changed in: linux (Ubuntu Lunar)
       Status: New => In Progress

** Changed in: linux (Ubuntu Jammy)
       Status: New => In Progress

** Changed in: linux (Ubuntu)
       Status: New => In Progress

** Changed in: hwe-next
       Status: New => In Progress

-- 
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Packages, which is subscribed to linux-oem-6.1 in Ubuntu.
https://bugs.launchpad.net/bugs/2028740

Title:
  Fix AMD gpu hang when screen off/on

Status in HWE Next:
  In Progress
Status in linux package in Ubuntu:
  In Progress
Status in linux-oem-6.1 package in Ubuntu:
  In Progress
Status in linux source package in Jammy:
  In Progress
Status in linux-oem-6.1 source package in Jammy:
  In Progress
Status in linux source package in Lunar:
  In Progress
Status in linux-oem-6.1 source package in Lunar:
  Invalid

Bug description:
  [Impact]
  AMD GPU hang when screen off/on.
  error log:
  kernel: [drm:dc_dmub_srv_wait_idle [amdgpu]] *ERROR* Error waiting for DMUB 
idle: status=3

  [Fix]
  Keep a PHY active when detecting DP signal + DPMS active.

  [Test]
  Tested on 3 AMD platforms, GPU works fine.

  [Where problems could occur]
  Low risk, the fix is in v6.4-rc1.

To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/2028740/+subscriptions


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