Public bug reported:
[Impact]
Unplug TBT dock during S3 and then wakes up the system leads to system hangs.
This not only happens on Dell TB16, but also Dell WD19TB. It's more like a BIOS
or TBT firmware issue that TBT firmware doesn't re-create the PCIe tunnels.
[Fix]
Mika provides 4 patches to fix this issue, but only 2 are accepted and are
included in linus' tree. We need especially the 4th commit to fix the issue, so
we keep the 3rd and 4th commits as sauce patches.
[Test]
Verified on Dell Precision 5530 + WD19TB
[Regression Potential]
Low, those patches doesn't change the code path much. The 4th commit adds some
checks to return failure state, and it should be safe for those machines which
is working well.
** Affects: linux (Ubuntu)
Importance: Undecided
Assignee: AceLan Kao (acelankao)
Status: In Progress
** Affects: linux-oem (Ubuntu)
Importance: Undecided
Status: Invalid
** Affects: linux-oem-osp1 (Ubuntu)
Importance: Undecided
Status: Invalid
** Affects: linux (Ubuntu Bionic)
Importance: Undecided
Assignee: AceLan Kao (acelankao)
Status: In Progress
** Affects: linux-oem (Ubuntu Bionic)
Importance: Undecided
Assignee: AceLan Kao (acelankao)
Status: In Progress
** Affects: linux-oem-osp1 (Ubuntu Bionic)
Importance: Undecided
Assignee: AceLan Kao (acelankao)
Status: In Progress
** Affects: linux (Ubuntu Disco)
Importance: Undecided
Assignee: AceLan Kao (acelankao)
Status: In Progress
** Affects: linux (Ubuntu Eoan)
Importance: Undecided
Assignee: AceLan Kao (acelankao)
Status: In Progress
** Affects: linux (Ubuntu Focal)
Importance: Undecided
Assignee: AceLan Kao (acelankao)
Status: In Progress
** Also affects: linux (Ubuntu Eoan)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Bionic)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Focal)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Disco)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Bionic)
Assignee: (unassigned) => AceLan Kao (acelankao)
** Changed in: linux (Ubuntu Disco)
Assignee: (unassigned) => AceLan Kao (acelankao)
** Changed in: linux (Ubuntu Eoan)
Assignee: (unassigned) => AceLan Kao (acelankao)
** Changed in: linux (Ubuntu Focal)
Assignee: (unassigned) => AceLan Kao (acelankao)
** Changed in: linux (Ubuntu Bionic)
Status: New => In Progress
** Changed in: linux (Ubuntu Disco)
Status: New => In Progress
** Changed in: linux (Ubuntu Eoan)
Status: New => In Progress
** Changed in: linux (Ubuntu Focal)
Status: New => In Progress
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https://bugs.launchpad.net/bugs/1849269
Title:
The system cannot resume from S3 if user unplugs the TB16 during
suspend state
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