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Date:      Fri, 06 Apr 2018 15:58:31 +0000
From:      bugzilla-noreply@freebsd.org
To:        usb@FreeBSD.org
Subject:   [Bug 225794] VM images for 12.0-CURRENT have problem with USB 3.0 ports
Message-ID:  <bug-225794-19105-07gAeU6Qna@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-225794-19105@https.bugs.freebsd.org/bugzilla/>
References:  <bug-225794-19105@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D225794

--- Comment #43 from David.Boyd49@twc.com ---
Andriy,

More and more I am becoming convinced that this is a problem in VirtualBox.

I think that your patch (r327996) uncovered this bug in the way that vbox m=
aps
real USB controller(s) to virtual USB controller(s).

In an attempt to prove this point, I ordered several Renesas (NEC) USB 3.0
controllers (uPD720201 chipset) to replace the VIA USB 3.0 controllers (VL8=
05
chipset).

Some of the motherboard being used have Renesas (NEC) USB 3.0 controller(s)
built-in.

All other motherboards do not have built-in USB 3.0 controller(s) and use an
add-on PCI-e card to add 2, 4, 5 or 7 ports.

I am using "sg_modes -a -vvvvv <device>" as a control.

In all cases where FreeBSD (and various Linux flavors) were running on the
"bare metal", no problems with either controller type were noticed.

When FreeBSD (and the Linux systems) is running as a VirtualBox guest, no
issues are seen when the Renesas USB 3.0 controller is used

****  Continued on next comment.  ****

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