vnc: 0.378 semantic: 0.165 other: 0.091 device: 0.082 performance: 0.062 network: 0.058 socket: 0.048 graphic: 0.044 debug: 0.022 files: 0.019 permissions: 0.010 boot: 0.008 PID: 0.008 KVM: 0.004 network: 0.595 debug: 0.150 vnc: 0.116 socket: 0.089 other: 0.014 files: 0.007 KVM: 0.006 device: 0.005 semantic: 0.004 PID: 0.004 performance: 0.003 permissions: 0.002 graphic: 0.002 boot: 0.002 reverse vnc to unix domain sockets does not work I tried to connect to a unix domain socket, but failed. $ qemu -vnc unix:/tmp/my.sock,reverse connect(unix:/tmp/my.sock,reverse): No such file or directory I guess it is because unix_connect does not remove characters after first comma. Looks like this should work nowadays (of course you need to start a listening program first), so closing this bug ticket now.