** Also affects: linux-oem-5.14 (Ubuntu)
Importance: Undecided
Status: New
** Changed in: linux-oem-5.14 (Ubuntu Kinetic)
Status: New => Invalid
** Changed in: linux-oem-5.14 (Ubuntu Jammy)
Status: New => Fix Committed
** Changed in: hwe-next
Importance: Undecided => Critical
** Changed in: hwe-next
Status: New => Fix Released
** Changed in: hwe-next
Status: Fix Released => In Progress
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Packages, which is subscribed to linux-oem-5.14 in Ubuntu.
https://bugs.launchpad.net/bugs/1991974
Title:
AMD Yellow Carp system hang on HDMI plug in/out over HP hook2 docking
Status in HWE Next:
In Progress
Status in linux package in Ubuntu:
Fix Released
Status in linux-oem-5.14 package in Ubuntu:
Invalid
Status in linux source package in Jammy:
In Progress
Status in linux-oem-5.14 source package in Jammy:
Fix Committed
Status in linux source package in Kinetic:
Fix Released
Status in linux-oem-5.14 source package in Kinetic:
Invalid
Bug description:
[SRU Justification]
[Impact]
AMD Yellow Carp system hang on HDMI plug in/out over dock station.
[Fix]
5 patches from mainline kernel v5.16 to be backported.
[Test Case]
Plug and unplug HDMI cable connected external monitor on a docking
station connected to HP Lockheed platform to try trigger system hang.
[Where problems could occur]
This series tries to address null state of MST link encoder, and no know
fix commits for them ever since till current mainline HEAD.
[Other Info]
While this is already available in v5.16 kernel and on, only 5.15 and
oem-5.14 are nominated for fix.
========== original bug description ==========
In order to resolve system hang during docking scenario with HDMI plug
in/out, these patches are needed into hwe-5.15.
v5.16
43dc2ad5 drm/amd/display: Fix MST link encoder availability check
e3ab29aa drm/amd/display: Fix for link encoder access for MST
7fb52632 drm/amd/display: FEC configuration for dpia links
ed0ffb5d drm/amd/display: FEC configuration for dpia links in MST mode
c9beecc5 drm/amd/display: Add work around for tunneled MST
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