This bug was fixed in the package linux-oem-5.13 - 5.13.0-1026.32
---------------
linux-oem-5.13 (5.13.0-1026.32) focal; urgency=medium
[ Ubuntu: 5.13.0-25.26 ]
* amdgpu hangs for 90 seconds at a time in 5.13.0-23, but 5.13.0-22 works
(LP: #1956401)
- drm/amdkfd: fix boot failure when iommu is disabled in Picasso.
* OOB write on BPF_RINGBUF (LP: #1956585)
- SAUCE: bpf: prevent helper argument PTR_TO_ALLOC_MEM to have offset other
than 0
-- Thadeu Lima de Souza Cascardo <casca...@canonical.com> Fri, 07 Jan
2022 14:03:28 -0300
** Changed in: linux-oem-5.13 (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:
Fix Released
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:
Fix Released
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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