[Bug 237666] repeated messages of "uhub_reattach_port: giving up port reset - device vanished"

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=237666

--- Comment #163 from Gerard Seibert <gerard_seibert at outlook.com> ---
(In reply to tech-lists from comment #162)
I am in the same boat. Presently, I am stuck on FreeBSD 11. I cannot move past
this version due to this bug. Considering that it was not present in versions
<= 11 and has not been corrected in version 12, I doubt that it is of any
priority to anyone. At the rate this is going, I will have to invest in a new
distro.

# dmidecode 3.3
# SMBIOS entry point at 0x6fe8d000
Found SMBIOS entry point in EFI, reading table from /dev/mem.
SMBIOS 3.1 present.
89 structures occupying 5312 bytes.

Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
     Vendor: Dell Inc.
     Version: 1.1.15
     Release Date: 07/01/2020
     Address: 0xF0000
     Runtime Size: 64 kB
     ROM Size: 16 MB
     Characteristics:
          PCI is supported
          PNP is supported
          BIOS is upgradeable
          BIOS shadowing is allowed
          Boot from CD is supported
          Selectable boot is supported
          EDD is supported
          5.25"/1.2 MB floppy services are supported (int 13h)
          3.5"/720 kB floppy services are supported (int 13h)
          3.5"/2.88 MB floppy services are supported (int 13h)
          Print screen service is supported (int 5h)
          Serial services are supported (int 14h)
          Printer services are supported (int 17h)
          ACPI is supported
          USB legacy is supported
          BIOS boot specification is supported
          Function key-initiated network boot is supported
          Targeted content distribution is supported
          UEFI is supported
     BIOS Revision: 1.1

Handle 0x0001, DMI type 1, 27 bytes
System Information
     Manufacturer: Dell Inc.
     Product Name: XPS 8930
     Version: 1.1.15
     Serial Number: 19WS903
     UUID: 4c4c4544-0039-5710-8053-b1c04f393033
     Wake-up Type: Power Switch
     SKU Number: 0859
     Family: XPS

Handle 0x0002, DMI type 2, 15 bytes
Base Board Information
     Manufacturer: Dell Inc.
     Product Name: 0T2HR0
     Version: A01
     Serial Number: .19WS903.CNPE10098R08VP.
     Asset Tag:
     Features:
          Board is a hosting board
          Board is replaceable
     Location In Chassis: Default string
     Chassis Handle: 0x0003
     Type: Motherboard
     Contained Object Handles: 0

pciconf -lv | grep -i "usb"
    device     = '200 Series/Z370 Chipset Family USB 3.0 xHCI Controller'
    subclass   = USB
    device     = 'ASM1142 USB 3.1 Host Controller'
    subclass   = USB
    device     = 'JHL6540 Thunderbolt 3 USB Controller (C step) [Alpine Ridge
4C 2016]'
    subclass   = USB

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