device: 0.868 graphic: 0.826 semantic: 0.812 instruction: 0.787 vnc: 0.767 mistranslation: 0.725 network: 0.714 socket: 0.676 KVM: 0.657 boot: 0.632 other: 0.475 assembly: 0.346 jp106 keyboard cannot input "_" key My environment are cpu model = AMD Phenom II X2 545 kvm version = Virtual Machine Manager 0.8.5 host kernel version = vmlinuz-2.6.34.7-56.fc13.x86_64 host kernel arch = x86_64 guest you are using = CentOS-5.5, slackware-13.1 qemu command = not use I do not use -no-kvm-irqchip or -no-kvm-pit switch or -no-kvm switch. Report I use jp106 keybord on host OS( Fedora Core 13), it work fine. but I could not keyin "_" key on GestOS( CentOS-5.5, Slackware-13.1). I change keybord but same result, so I reported a bug. A small patch to "qemu-0.15.0/ui/x_keymap.c" fixed this one: http://patchwork.ozlabs.org/patch/38145/ nm The following commit contains the patch that has been suggested in comment #1: http://git.qemu.org/?p=qemu.git;a=commitdiff;h=33aa30cafcce053b83 ... so this issue should be fixed in recent versions of QEMU.