** Changed in: linux (Ubuntu Noble)
Status: In Progress => Fix Committed
** Changed in: linux (Ubuntu Oracular)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/2083182
Title:
The system hangs after resume with thunderbolt monitor(AMD GPU
[1002:1900])
Status in HWE Next:
New
Status in linux package in Ubuntu:
Fix Committed
Status in linux-oem-6.11 package in Ubuntu:
Invalid
Status in linux source package in Noble:
Fix Committed
Status in linux-oem-6.11 source package in Noble:
In Progress
Status in linux source package in Oracular:
Fix Committed
Status in linux-oem-6.11 source package in Oracular:
Invalid
Bug description:
[Impact]
The system hangs on blackscreen with thunderbolt monitor while resume from
suspend state.
[Fix]
The TBT monitor HPD will be triggered during the resume procedure
and call the drm_client_modeset_probe() while
struct drm_connector connector->dev->master is NULL.
It will mess up the pipe topology after resume.
AMD submitted a patch to fix this issue.
https://lore.kernel.org/all/20240927170103.102180-3-jerry....@amd.com/T/#e868f6b967ec79ae85c5a8a446be9b5d5c97e5427
[Test case]
1. Boot to OS
2. Plug thunderbolt monitor to the system.
3. Enter suspend
4. Press the power button to resume from suspend
5. Should not hang
[Where problems could occur]
Pretty low chance to introduce any regressions.
The patch won't do anything bad to the system while resuming,
the probing will be done after resumed.
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