Pkg xen devel - Oct 2018 - Bug#910948: xen-hypervisor-4.11-amd64: HVM DomU: Emulated PS/2 keyboard does not work (through VNC)

Package: xen-hypervisor-4.11-amd64
Version: 4.11.1~pre.20180911.5acdd26fdc+dfsg-3
Severity: important

Dear Maintainer,

With Xen 4.11, I cannot use the standard emulated PS/2 keyboard when booting HVM
domUs (through VNC.)
I did not have this problem with Xen 4.8
(4.8.3+xsa267+shim4.10.1+xsa267-1+deb9u9).

In SeaBIOS, pressing ESC does not interrupt the boot.
In OVMF, pressing ESC does not interrupt the boot; typing does not work at the
UEFI shell, either.
I cannot type at Syslinux prompts.
When a kernel boots, I cannot type at the console.

If I use '-device usb-kbd' to add a USB keyboard, I can usually type at
the Syslinux prompt and at shells, but I still can't affect the BIOS.

-- System Information:
Debian Release: buster/sid
  APT prefers testing
  APT policy: (900, 'testing'), (400, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.18.6 (SMP w/12 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8),
LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

xen-hypervisor-4.11-amd64 depends on no packages.

Versions of packages xen-hypervisor-4.11-amd64 recommends:
ii  xen-hypervisor-common  4.11.1~pre.20180911.5acdd26fdc+dfsg-1~exp1
ii  xen-utils-4.11         4.11.1~pre.20180911.5acdd26fdc+dfsg-3

xen-hypervisor-4.11-amd64 suggests no packages.

-- no debconf information