Dear all,

After “yum update” and reboot on a CentOS 7 server running kvm, all VM guests fail to receive keyboard input. Even sending ctrl-alt-delete from the virt-manager “Send Key” menu is inoperative. Most guests are set up as spice + QXL, and viewed on remote X sessions using virt-manager. Extensive browsing for a solution has turned up only dead ends. I tried reverting to the earlier kernel but there was no joy. Possibly I made some config change or installed (or removed) something that didn’t take effect until I rebooted, but searching the host’s command history has been unhelpful. Has anyone here run into this?

Connecting to a CentOS 6 guest with virt-viewer writes some messages to the console, but what little I found in a web search was unhelpful. BTW, I hadn’t messed with any guest keymaps, all stock installs with en_US.

$ virt-viewer irc.foo.peecee3.com

(virt-viewer:6016): GSpice-WARNING **: Warning no automount-
inhibiting implementation available

(virt-viewer:6016): VNC-keymap-WARNING **: Unknown keycode mapping ‘(null)’.
Please report to gtk-vnc-list@gnome.org
including the following information:

– Operating system
– GDK build
– X11 Server
– xprop -root
– xdpyinfo

Every attempted keystroke on the guest produces one of these messages:

(virt-viewer:6016): GSpice-CRITICAL **: send_key: assertion `scancode != 0′ failed

What I think is relevant, running on the most recent kernel, all commands run from the host:

$ libvirtd –version
libvirtd (libvirt) 1.2.8

$ uname -a
Linux mencius.peecee3.com 3.10.0-123.13.2.el7.x86_64 #1 SMP
Thu Dec 18 14:09:13 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

$ cat /etc/redhat-release
CentOS Linux release 7.0.1406 (Core)

$ systemctl –no-pager list-unit-files 2>&1| egrep -i ‘spice|agent|virt|qxl|qemu|kvm’ | grep -v ‘\.socket’
machine-qemu\x2dirc.foo.peecee3.com.scope static
libvirt-guests.service disabled
libvirtd.service enabled
virt-who.service disabled
virtlockd.service static

$ localectl status
System Locale: LANG=en_US.UTF-8
VC Keymap: us
X11 Layout: us

$ rpm -qa | egrep -i ‘spice|agent|virt|qxl|qemu|kvm’ | sort
ipxe-roms-qemu-20130517-5.gitc4bce43.el7.noarch
libgovirt-0.1.0-3.el7.x86_64
libvirt-1.2.8-9.el7.x86_64
libvirt-client-1.2.8-9.el7.x86_64
libvirt-daemon-1.2.8-9.el7.x86_64
libvirt-daemon-config-network-1.2.8-9.el7.x86_64
libvirt-daemon-config-nwfilter-1.2.8-9.el7.x86_64
libvirt-daemon-driver-interface-1.2.8-9.el7.x86_64
libvirt-daemon-driver-lxc-1.2.8-9.el7.x86_64
libvirt-daemon-driver-network-1.2.8-9.el7.x86_64
libvirt-daemon-driver-nodedev-1.2.8-9.el7.x86_64
libvirt-daemon-driver-nwfilter-1.2.8-9.el7.x86_64
libvirt-daemon-driver-qemu-1.2.8-9.el7.x86_64
libvirt-daemon-driver-secret-1.2.8-9.el7.x86_64
libvirt-daemon-driver-storage-1.2.8-9.el7.x86_64
libvirt-daemon-kvm-1.2.8-9.el7.x86_64
libvirt-glib-0.1.7-3.el7.x86_64
libvirt-python-1.2.8-5.el7.x86_64
perl-Sys-Virt-1.1.1-5.el7.x86_64
qemu-img-rhev-2.1.2-13.el7.x86_64
qemu-kvm-common-rhev-2.1.2-13.el7.x86_64
qemu-kvm-rhev-2.1.2-13.el7.x86_64
qemu-kvm-tools-rhev-2.1.2-13.el7.x86_64
spice-glib-0.20-8.el7.x86_64
spice-gtk3-0.20-8.el7.x86_64
spice-protocol-0.12.6-2.el7.noarch
spice-server-0.12.4-5.el7_0.1.x86_64
virt-install-1.0.1-1.el7.CentOS.noarch
virt-manager-1.0.1-1.el7.CentOS.noarch
virt-manager-common-1.0.1-1.el7.CentOS.noarch
virt-top-1.0.8-7.el7.x86_64
virt-viewer-0.5.7-7.el7.x86_64
virt-what-1.13-5.el7.x86_64
virt-who-0.8-15.el7_0.noarch

Ordinarily selinux run on the host, but I temporarily disabled it to facilitate problem solving:

$ getenforce
Disabled

The qemu logs for the guests are unremarkable, and nothing much shows up in /var/log/messages.

Thanks,