This bug is awaiting verification that the linux-oem-6.1/6.1.0-1018.18
kernel in -proposed solves the problem. Please test the kernel and
update this bug with the results. If the problem is solved, change the
tag 'verification-needed-jammy' to 'verification-done-jammy'. If the
problem still exists, change the tag 'verification-needed-jammy' to
'verification-failed-jammy'.

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: kernel-spammed-jammy-linux-oem-6.1 verification-needed-jammy

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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-oem-6.1 in Ubuntu.
https://bugs.launchpad.net/bugs/2027957

Title:
  Fix AMDGPU: the screen freeze with W7500

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  In Progress
Status in linux-oem-6.1 package in Ubuntu:
  Invalid
Status in linux source package in Jammy:
  Won't Fix
Status in linux-oem-6.1 source package in Jammy:
  Fix Committed
Status in linux source package in Kinetic:
  Won't Fix
Status in linux-oem-6.1 source package in Kinetic:
  Invalid
Status in linux source package in Lunar:
  In Progress
Status in linux-oem-6.1 source package in Lunar:
  Invalid
Status in linux source package in Mantic:
  In Progress
Status in linux-oem-6.1 source package in Mantic:
  Invalid

Bug description:
  [impact]
  While booting into OOBE, the screen freeze [AMD W7500 only]

  [fix]
  AMDGPU would allocate pcie gen/lane dynamically after ASPM is enabled.
  Intel CPU may not support the dynamic lane/speed switching.

  Solution is,
  - Detect Intel x86 systems that don't support dynamic switching
  - Override the input caps to maximum supported for that system
  - Force all PCIe levels to use the same settings, rather than try to 
configure each level differently.

  [test cases]
  1. boot with w7500
  2. the screen doesn't freeze and can't find the error message in dmesg.
  "amdgpu: [drm] *ERROR* [CRTC:72:crtc-0] flip_done timed out"

  [where the issue could happen]
  low, this could lead issue when setting higher speeds than supported.

  [Misc]
  1. jammy, amdgpu isn't loaded on this platform with 5.15-73-generic.
  2. kinetic, amdgpu failed to probe the vga controller with 5.19-46-generic.
  3. Passed cbd build against Mantic&Lunar.

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