Public bug reported:
[Impact]
When TBT monitor is connected to AMD platform, system resume will hit
stack corruption or BUG_ON() macro.
[Fix]
Revert the offending commit and handle MST properly.
[Test]
The system can resume normally and no more kernel splat.
[Where problems could occur]
The new logic is restriced to MST hub, so normal DP/HDMI usage should be
unaffected.
** Affects: linux (Ubuntu)
Importance: Medium
Status: Confirmed
** Affects: linux-oem-5.17 (Ubuntu)
Importance: Undecided
Status: Invalid
** Affects: linux (Ubuntu Jammy)
Importance: Medium
Status: Confirmed
** Affects: linux-oem-5.17 (Ubuntu Jammy)
Importance: Medium
Status: Confirmed
** Affects: linux (Ubuntu Kinetic)
Importance: Medium
Status: Confirmed
** Affects: linux-oem-5.17 (Ubuntu Kinetic)
Importance: Undecided
Status: Invalid
** Also affects: linux (Ubuntu Kinetic)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Jammy)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Kinetic)
Status: New => Confirmed
** Changed in: linux (Ubuntu Jammy)
Status: New => Confirmed
** Changed in: linux (Ubuntu Jammy)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu Kinetic)
Importance: Undecided => Medium
** Also affects: linux-oem-5.17 (Ubuntu)
Importance: Undecided
Status: New
** Changed in: linux-oem-5.17 (Ubuntu Kinetic)
Status: New => Invalid
** Changed in: linux-oem-5.17 (Ubuntu Jammy)
Status: New => Confirmed
** Changed in: linux-oem-5.17 (Ubuntu Jammy)
Importance: Undecided => Medium
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https://bugs.launchpad.net/bugs/1990920
Title:
Fix resume on AMD platforms when TBT monitor is plugged
Status in linux package in Ubuntu:
Confirmed
Status in linux-oem-5.17 package in Ubuntu:
Invalid
Status in linux source package in Jammy:
Confirmed
Status in linux-oem-5.17 source package in Jammy:
Confirmed
Status in linux source package in Kinetic:
Confirmed
Status in linux-oem-5.17 source package in Kinetic:
Invalid
Bug description:
[Impact]
When TBT monitor is connected to AMD platform, system resume will hit
stack corruption or BUG_ON() macro.
[Fix]
Revert the offending commit and handle MST properly.
[Test]
The system can resume normally and no more kernel splat.
[Where problems could occur]
The new logic is restriced to MST hub, so normal DP/HDMI usage should be
unaffected.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1990920/+subscriptions
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