** Changed in: linux (Ubuntu)
Status: In Progress => Invalid
** Changed in: linux (Ubuntu)
Assignee: AceLan Kao (acelankao) => (unassigned)
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https://bugs.launchpad.net/bugs/2038981
Title:
No external output when hotplugging to a DP monitor after the monitor
went to sleep for AMD 6300 GPU
Status in HWE Next:
New
Status in linux package in Ubuntu:
Invalid
Status in linux-oem-6.1 package in Ubuntu:
Invalid
Status in linux-oem-6.5 package in Ubuntu:
Invalid
Status in linux source package in Jammy:
Invalid
Status in linux-oem-6.1 source package in Jammy:
Fix Committed
Status in linux-oem-6.5 source package in Jammy:
Fix Committed
Status in linux source package in Mantic:
In Progress
Status in linux-oem-6.1 source package in Mantic:
Invalid
Status in linux-oem-6.5 source package in Mantic:
Invalid
Bug description:
[Impact]
With ADM 6300 GPU, there is no external output when plug in a DP monitor
after the monitor went to sleep
[Fix]
Mario provides a patch to fix the issue
https://patchwork.kernel.org/project/linux-usb/list/?series=790399
And also below commit is required
134b8c5d8674 drm/amd: Fix detection of _PR3 on the PCIe root port
[Test case]
1. Boot up the system with AMD 6300 GPU and plug DP monitor on the card
2. Unplug the DP cable and wait the monitor sleeps
3. Plug in the DP cable again and it should wake up the monitor correctly and
output the screen to the monitor
[Where problems could occur]
The PR3 patch only affects AMD dGPU and should fix AMD BOCO detection logic,
and UCSI patch try to set the correct power supply scope which should do no
harm to the existing systems.
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