graphic: 0.916 device: 0.809 performance: 0.640 semantic: 0.635 debug: 0.613 boot: 0.346 vnc: 0.284 PID: 0.283 other: 0.282 network: 0.220 socket: 0.202 permissions: 0.168 files: 0.095 KVM: 0.020 Serial Named Pipe Unrecognized Windows 7 I created a named pipe serial hardware and supplied '/tmp/debug' which I created using mkfifo This is the snippet from ps -aux -chardev pipe,id=charserial0,path=/tmp/debug -device isa-serial,chardev=charserial0,id=serial0 failure@ubuntu1:~$ ls -al /tmp/debug* prwxrwxrwx 1 jgp jgp 0 2012-03-03 18:40 /tmp/debug prwxrwxrwx 1 jgp jgp 0 2012-03-03 18:40 /tmp/debug.in However inside the Windows 7 guest (even after a restart) nothing is recognized. Even after going through the add legacy hardware motions it's still not picked up. Which version of QEMU were you using? Can you still reproduce this issue with the latest version of QEMU? [Expired for QEMU because there has been no activity for 60 days.]