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I found a strange problem when trying to connect my Samsung T5 SSD.

If I connect it to the Thunderbolt port on my HP EliteDesk Mini G4, with
Thunderbolt at boot then the SSD is detected without issues.

If I unplug it and reconnect then it's not detected.

If I force the thunderbolt controller on (boltctl power -t 1)  then I
can see the new USB host created in lsusb but the attached device is not
added.  No additional events are shown in dmesg.

If I connect the device using another cable then it also doesn't work

I have a USB-C cable only rated to USB 2.0 speed then the device is
recognized without any issues.

Ubuntu 19.04, 5.0.0-15-generic

04:00.0 System peripheral: Intel Corporation JHL7540 Thunderbolt 3 NHI [Titan 
Ridge 2C 2018] (rev 06)
3a:00.0 USB controller: Intel Corporation JHL7540 Thunderbolt 3 USB Controller 
[Titan Ridge 2C 2018] (rev 06)

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: bot-comment
-- 
USB 3 devices are not detected on thunderbolt 3
https://bugs.launchpad.net/bugs/1830930
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