ACK / APPLIED[F]: [PATCH 0/2][SRU][unstable][E] The system cannot resume from S3 if user unplugs the TB16 during suspend state

Seth Forshee seth.forshee at
Mon Dec 16 19:47:55 UTC 2019

On Tue, Dec 10, 2019 at 10:34:58AM +0800, AceLan Kao wrote:
> BugLink:
> [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 were accepted.
> Now the reset 2 commits has been included in v5.5, so backport them
> to Ubuntu kernel.
> [Test]
> Verified on Dell Precision 5530 + WD19TB
> [Regression Potential]
> Low, those patches doesn't change the code path much. The final commit
> adds some checks to return failure state, and it should be safe for
> those machines which are already working well.

Acked-by: Seth Forshee <seth.forshee at>

Applied to focal/master-next, not needed in unstable since the patches
are from 5.5. Thanks!

More information about the kernel-team mailing list