Okay, I've updated virtio serial drivers to latest ones. This did not help. Afterwards I've enabled "Show hidden devices" in Device manager of a guest os.In the "Other devices" section I can see two virtio serial ports with question marks (i did configure guest with 2 virtio channels). Is this a normal behaviour? Screenshot: https://cloud.ring.lt/index.php/s/YCgnuc8ncPo18dP Any ideas would be appreciated. Thank you. On Thu, 2016-06-30 at 11:39 +0300, Tadas wrote: > I'm not sure, if it's correct mailing list to post this problem to. > > I'm having problems with Windows guest and virtio serial port. > According to this manual: > http://www.spice-space.org/page/Whiteboard/AgentProtocol > I should get a named pipe on my guest VM after I create VirtIO > sedial > device and spicevmc channel. > This works without any problems on Linux guest: > > ls /dev/virtio-ports/ > com.redhat.spice.0 > > But on Windows guest I can see no such pipe: > > PipeList v1.01 > by Mark Russinovich > http://www.sysinternals.com > > Pipe Name                                    Instances       Max > Instances > ---------                                    ---------       ---- > ---- > ----- > InitShutdown                                      3               - > 1 > lsass                                             4               - > 1 > ntsvcs                                            3               - > 1 > scerpc                                            3               - > 1 > Winsock2\CatalogChangeListener-2b8- > 0              1                1 > epmapper                                          3               - > 1 > Winsock2\CatalogChangeListener-1ac- > 0              1                1 > LSM_API_service                                   3               - > 1 > TermSrv_API_service                               3               - > 1 > Ctx_WinStation_API_service                        3               - > 1 > eventlog                                          3               - > 1 > Winsock2\CatalogChangeListener-174- > 0              1                1 > atsvc                                             3               - > 1 > wkssvc                                            6               - > 1 > Winsock2\CatalogChangeListener-16c- > 0              1                1 > SessEnvPublicRpc                                  3               - > 1 > spoolss                                           3               - > 1 > Winsock2\CatalogChangeListener-550- > 0              1                1 > trkwks                                            3               - > 1 > NlaSvcTask                                        1               - > 1 > srvsvc                                            5               - > 1 > browser                                           3               - > 1 > Winsock2\CatalogChangeListener-710- > 0              1                1 > Winsock2\CatalogChangeListener-228- > 0              1                1 > Winsock2\CatalogChangeListener-230- > 0              1                1 > HPUPDMon                                          1                 > 1 > MsFteWds                                          2               - > 1 > PIPE_EVENTROOT\CIMV2SCM EVENT PROVIDER            1               - > 1 > TDLN-3772- > 41                                      1                2 > TDLN-3216- > 41                                      1                2 > > > virtio serial drivers are installed on Windows guest VM. > What I am missing here? > Thank you. > > _______________________________________________ > libvirt-users mailing list > libvirt-users(a)redhat.com > https://www.redhat.com/mailman/listinfo/libvirt-users _______________________________________________ libvirt-users mailing list libvirt-users(a)redhat.com https://www.redhat.com/mailman/listinfo/libvirt-users