This bug was fixed in the package linux-oem-5.14 - 5.14.0-1013.13
---------------
linux-oem-5.14 (5.14.0-1013.13) focal; urgency=medium
* focal/linux-oem-5.14: 5.14.0-1013.13 -proposed tracker (LP:
#1955464)
* devices on thunderbolt dock are not recognized on adl-p platform
(LP: #1955016)
- SAUCE: thunderbolt: Runtime PM activate both ends of the device link
- SAUCE: thunderbolt: Tear down existing tunnels when resuming from
hibernate
- SAUCE: thunderbolt: Runtime resume USB4 port when retimers are scanned
- SAUCE: thunderbolt: Do not allow subtracting more NFC credits than
configured
- SAUCE: thunderbolt: Do not program path HopIDs for USB4 routers
- SAUCE: thunderbolt: Add debug logging of DisplayPort resource allocation
-- Chia-Lin Kao (AceLan) <acelan....@canonical.com> Tue, 21 Dec 2021
16:59:25 +0800
** Changed in: linux-oem-5.14 (Ubuntu Focal)
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1954646
Title:
[SRU][I/J/OEM-5.13/OEM-5.14] Fix pci port lost when hotplug dock
Status in HWE Next:
New
Status in linux package in Ubuntu:
In Progress
Status in linux-oem-5.13 package in Ubuntu:
New
Status in linux-oem-5.14 package in Ubuntu:
New
Status in linux-oem-5.13 source package in Focal:
New
Status in linux-oem-5.14 source package in Focal:
Fix Released
Status in linux source package in Impish:
Fix Committed
Status in linux source package in Jammy:
In Progress
Bug description:
[Impact]
On Intel Maple Ridge, when hotplug TBT4 dock, PCIe bus show error
"severity=Uncorrected (Non-Fatal)",
and failed to probe.
[Fix]
Re-enable PCIe port LTR after reset or hotplug, and probe it properly.
[Test]
Verified on HW with TBT4 dock. it works fine.
Also tested Tiger Lake-LP Thunderbolt 4, tbt4 dock works fine.
Tested on AMD Cezanne, PCIe works fine, it doesn't support thunderbolt.
[Where problems could occur]
PCI bus may break.
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