Interesting. It has happened that I have needed to do the power down procedure but in general the USB devices work or they do not... and those that do are consistent.
So I have to wonder... is it the chipset or is there something about the virtualized environment? Have any other chipsets proven to be more reliable? This is about the only issue I think I've had with the VM since I figured this iommu stuff out. I'm really really impressed. On Fri, Nov 27, 2015 at 7:42 PM, Okky Hendriansyah <o...@nostratech.com> wrote: > On November 28, 2015 at 03:01:23, Brett Foster (fost...@edgeandvertex.org) > wrote: > > Hi, > > I have a uPD720201 USB 3.0 controller card installed and mapped to my VM. > Many devices work fine, however a number of devices fail to enumerate. For > example, I have tried 4 different USB hubs (2 and 3). Some flash/disk > drives work while others don't. My USB CAN/LIN USB adapter doesn't work. > Some devices are USB 3. Some are USB 2. > > I've never seen this kind of behaviour before. Does anybody have > experience with this controller? > > Brett > > Hi Brett, > > I have a Renesas card with 4 port of USB 3.0 which I think the same with > yours. This is my lspci -k output for my USB 3.0 card: > > 08:00.0 USB controller: Renesas Technology Corp. uPD720201 USB 3.0 Host > Controller (rev 03) > > Kernel driver in use: vfio-pci > > Kernel modules: xhci_pci > > I have it passed through to my Windows 10 guest, with a USB tree something > like this: > > Renesas uPD720201 USB 3.0 Card > > |— Logitech Gamepad F510 > > |— Dell U2312HM monitor USB 2.0 hub > > |— Canon LiDE 220 scanner > > |— Pluggable USB 2.0 switch > > |— Toshiba USB 2.0 hub > > |— Logitech G502 mouse > > |— Filco Ninja keyboard > > The only troublesome part is the Toshiba USB 2.0 hub, sometimes it fails. > And I usually remedy it with fully power off the machine (turn of the PSU > switch) for a while and after that it enumerates normal again. Does your > card comes with a molex powered port? Just in case you haven’t done so, > have you plugged it with a molex? > > -- > *Okky Hendriansyah* >
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