Comment 8 for bug 1596635

------- Comment From <email address hidden> 2016-06-29 16:57 EDT-------
(In reply to comment #32)
> Hello Canonical,
> Sorry, I use apt-get dist-upgrade and it installed the -28 kernel.
> But when I use "aptitude" command then I get my system upgrade to -29 kernel.
> With the -29 kernel, I am able to start my guest that has the pci pass
> through.
>
> root@micro:~# uname -r
> 4.4.0-29-generic
>
> root@micro:~# virsh list
> Id Name State
> ----------------------------------------------------
> 6 microg4 running
>
> I also see this error "xhci_hcd". Should I be worried about that init
> fail.......
> root@micro:~# dmesg |grep "xhci_hcd"
> [ 1.884017] xhci_hcd 0001:09:00.0: xHCI Host Controller
> [ 1.884079] xhci_hcd 0001:09:00.0: new USB bus registered, assigned bus
> number 1
> [ 1.884166] xhci_hcd 0001:09:00.0: Using 64-bit DMA iommu bypass
> [ 1.884229] xhci_hcd 0001:09:00.0: hcc params 0x0270f06d hci version 0x96
> quirks 0x00000000
> [ 1.884936] xhci_hcd 0001:09:00.0: xHCI Host Controller
> [ 1.884941] xhci_hcd 0001:09:00.0: new USB bus registered, assigned bus
> number 2
> [ 2.193049] usb 1-3: new high-speed USB device number 2 using xhci_hcd
> [ 2.433162] usb 2-2: new SuperSpeed USB device number 2 using xhci_hcd
> [ 2.561045] usb 1-4: new high-speed USB device number 3 using xhci_hcd
> [ 2.801107] usb 2-4: new SuperSpeed USB device number 3 using xhci_hcd
> [ 2.913045] usb 1-3.1: new low-speed USB device number 4 using xhci_hcd
> [ 68.765623] xhci_hcd 0001:09:00.0: remove, state 1
> [ 68.865172] xhci_hcd 0001:09:00.0: Host not halted after 16000
> microseconds.
> [ 68.865175] xhci_hcd 0001:09:00.0: Host controller not halted, aborting
> reset.
> [ 68.865244] xhci_hcd 0001:09:00.0: USB bus 2 deregistered
> [ 68.865299] xhci_hcd 0001:09:00.0: remove, state 1
> [ 69.329779] xhci_hcd 0001:09:00.0: USB bus 1 deregistered
> [ 70.233109] xhci_hcd 0001:09:00.0: xHCI Host Controller
> [ 70.233116] xhci_hcd 0001:09:00.0: new USB bus registered, assigned bus
> number 1
> [ 70.264505] xhci_hcd 0001:09:00.0: Host not halted after 16000
> microseconds.
> [ 70.264507] xhci_hcd 0001:09:00.0: can't setup: -110
> [ 70.264586] xhci_hcd 0001:09:00.0: USB bus 1 deregistered
> [ 70.264597] xhci_hcd 0001:09:00.0: init 0001:09:00.0 fail, -110
> [ 70.264652] xhci_hcd: probe of 0001:09:00.0 failed with error -110

This log was taken from the host after the guest is destroyed, right? That's a different issue, which also reproduces upstream. I think it has something to do with an errata for this hardware.

Does the controller probe successfully from inside the guest?

We should have a new bug opened to track it.