[Bug 206649] New: Lenovo C940 - USB3 disk not detected if connected after boot

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https://bugzilla.kernel.org/show_bug.cgi?id=206649

            Bug ID: 206649
           Summary: Lenovo C940 - USB3 disk not detected if connected
                    after boot
           Product: Drivers
           Version: 2.5
    Kernel Version: 5.6-rc2
          Hardware: Intel
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: USB
          Assignee: drivers_usb@kernel-bugs.kernel.org
          Reporter: email-ext@laposte.net
        Regression: No

Created attachment 287561
  --> https://bugzilla.kernel.org/attachment.cgi?id=287561&action=edit
Dmesg after unplugging the SSD.

Hello,

I have a Lenovo C940 under Manjaro with kernel 5.6-rc2. I am using a Samsung T5
SSD USB3.1 Gen2 disk with usb C connector. If I connect the disk before
booting, it will work correctly. However If I either unplug/replug it once the
os booted or if I plug it after the boot then the disk won't be detected.

I joined my dmesg and journalctl logs, but I did not see much information from
the logs... However, by using a thunderbolt3 dock and connecting the disk to
the USB A ports, I had no problem when connecting/disconnecting the drive
several times. However, as soon as I was using the usb C ports, mapped to
thunderbolt3, directly from the laptop or with the dock, same problems
described above occurred.

This problem may be linked to this ticket:
https://bugzilla.kernel.org/show_bug.cgi?id=206459

I am enjoying a similar problem with my Thunderbolt 3 dock (OWC Thunderbolt3
dock) when not connecting it before the boot. It even leads to os crash, but I
will fill another bug report for this particular issue.

I can provide more log if required, please feel free to give me any other
commands/idea to debug this.

Thanks,

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