Public bug reported: 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: ubuntu Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1830930 Title: USB 3 devices are not detected on thunderbolt 3 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1830930/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs