[Qemu-devel] [Bug 1694808] [NEW] Passthrough USB Host Keyboard doesn't work on Q35 platform on boot-up

[Colin Finck]

Public bug reported:

Using qemu-kvm as shipped with Ubuntu 16.04, I cannot get a passed-
through USB Host Keyboard to work at boot-up using the Q35 platform.

My minimal example to verify this bug is the following:

  qemu-system-x86_64 -M q35 -m 128 -cdrom mini.iso -usb -usbdevice
host:04ca:005a -vnc :1 -display none

Using a noname USB Keyboard with ID 04ca:005a and the Ubuntu 16.04
NetBoot mini.iso, I can see the boot screen of the Ubuntu ISO through
VNC, but pressing the arrow keys doesn't do anything.

By taking out the "-M q35" parameter, QEMU switches to the traditional
i440FX system. The passed-through USB Host Keyboard works there, but the
old platform is no option for me.

** Affects: qemu
     Importance: Undecided
         Status: New

** Affects: qemu-kvm (Ubuntu)
     Importance: Undecided
         Status: New

** Also affects: qemu-kvm (Ubuntu)
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1694808

Title:
  Passthrough USB Host Keyboard doesn't work on Q35 platform on boot-up

Status in QEMU:
  New
Status in qemu-kvm package in Ubuntu:
  New

Bug description:
  Using qemu-kvm as shipped with Ubuntu 16.04, I cannot get a passed-
  through USB Host Keyboard to work at boot-up using the Q35 platform.

  My minimal example to verify this bug is the following:

    qemu-system-x86_64 -M q35 -m 128 -cdrom mini.iso -usb -usbdevice
  host:04ca:005a -vnc :1 -display none

  Using a noname USB Keyboard with ID 04ca:005a and the Ubuntu 16.04
  NetBoot mini.iso, I can see the boot screen of the Ubuntu ISO through
  VNC, but pressing the arrow keys doesn't do anything.

  By taking out the "-M q35" parameter, QEMU switches to the traditional
  i440FX system. The passed-through USB Host Keyboard works there, but
  the old platform is no option for me.

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