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

[bugzilla-noreply at freebsd.org]

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

srlemke at protonmail.com changed:

           What    |Removed                     |Added
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                 CC|                            |srlemke at protonmail.com

--- Comment #5 from srlemke at protonmail.com ---
Just to pump this thread a little more:

<slemke at besta>/home/slemke/dropbox # dmesg |grep vanished |wc -l
815

<root at besta>/root # pciconf -lv |grep -i usb
    device     = '100 Series/C230 Series Chipset Family USB 3.0 xHCI
Controller'
    subclass   = USB
    device     = 'DSL6340 USB 3.1 Controller [Alpine Ridge]'
    subclass   = USB
<root at besta>/root # 

So this is a very interesting scenario and will probably very difficult to
debug and solve:

I have one of these portable docking station(works fine on linux):
https://www.czc.cz/dell-dokovaci-stanice-wd15-130w/187601/produkt - its and
usb-c docking station.

On system boot it boot-locks with the message:
"uhub_reattach_port: giving up port reset - device vanished" - if I quickly
unplug and replug the usb-c the boot proceeds and images appears on the 2
screens attached to the docking station. No regular USB2 are working on the
docking station (only the 2 monitors) - Only the screns are correctly detected.

<root at besta>/home/slemke # uname -a
FreeBSD besta 12.0-RELEASE-p3 FreeBSD 12.0-RELEASE-p3 GENERIC  amd64
<root at besta>/home/slemke #

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