Comment 7 for bug 1596635

------- Comment From <email address hidden> 2016-06-29 15:39 EDT-------
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