** Description changed:
[Impact]
* AMD Yellow Carp provides integrated USB4 host controllers
* When plugging in a Thunderbolt3 or USB4 device, users are unable to
authorize it using the GUI due to an error message: "parent not authorized,
deferring"
[Test Plan]
* Plug in USB4 device or TBT3 to AMD Yellow Carp host
* Ensure that PCI topology has populated
* Observe that /sys/bus/thunderbolt/devices/DEVICE/authorized is "0"
* Try to run `boltctl enroll $UUID`
[Where problems could occur]
* Intel USB4 or TBT3 hosts also use bolt. They could have a problem with
the new version of bolt.
* This is very unlikely however since there is a through test suite, and up
until now the entire industry has been using bolt on Intel controllers for a
long time.
+ * There haven't been any significant bugs reported upstream or in Ubuntu
since 0.9.1 release.
[Other Info]
* This bug also occurs on Intel controllers from ICL, TGL or ALD, but in
many cases they are automatically authorized to an iommu DMA policy.
* It is fixed in bolt 0.9.1 or later release.
* To solve the SRU, will backport 0.9.1 release from Impish.
+ * I did look into backporting just the commit(s) for fixing this, but it's
not a trivial backport. Quoting the changelog
(https://gitlab.freedesktop.org/bolt/bolt/-/blob/master/CHANGELOG.md):
"Additionally the unique_id of said host controller changes with every boot,
which breaks one of the fundamental assumptions in boltd".
** Changed in: bolt (Ubuntu Focal)
Status: New => In Progress
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https://bugs.launchpad.net/bugs/1962349
Title:
Bolt doesn't work with native USB4 hosts
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