x86: 0.870
device: 0.861
architecture: 0.559
peripherals: 0.538
performance: 0.433
debug: 0.424
graphic: 0.366
network: 0.322
semantic: 0.230
VMM: 0.222
arm: 0.188
ppc: 0.185
virtual: 0.179
PID: 0.177
socket: 0.154
mistranslation: 0.134
TCG: 0.132
hypervisor: 0.104
register: 0.088
boot: 0.078
kernel: 0.068
permissions: 0.056
vnc: 0.048
KVM: 0.045
user-level: 0.042
files: 0.028
i386: 0.025
assembly: 0.018
risc-v: 0.015

lsusb fails with qemu-system-x86_64 command (qemu-system-x86 package)