First sorry for the bad english. I have a similar problem with Ubuntu Lucid 10.04 amd64 Desktop edition using KVM. Any virtual machine with a serial port (host device /dev/ttyS0) configured fails to start. Removing the serial port the VM works very well. I use virt manager for the creation and management of the virtual machines .
This is the configuration file of the VM running Ubuntu Lucid 10.04 amd64 (like the host) but server edition <domain type='kvm'> <name>deluge</name> <uuid>d8ada746-0538-089e-1215-0a1188977c81</uuid> <memory>262144</memory> <currentMemory>262144</currentMemory> <vcpu>1</vcpu> <os> <type arch='x86_64' machine='pc-0.12'>hvm</type> <boot dev='hd'/> </os> <features> <acpi/> <apic/> <pae/> </features> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>restart</on_crash> <devices> <emulator>/usr/bin/kvm</emulator> <disk type='block' device='disk'> <driver name='qemu' type='raw' cache='none'/> <source dev='/dev/lvmforkvm/deluge'/> <target dev='vda' bus='virtio'/> </disk> <disk type='file' device='cdrom'> <driver name='qemu' type='raw'/> <target dev='hdc' bus='ide'/> <readonly/> </disk> <interface type='bridge'> <mac address='00:54:00:35:b8:12'/> <source bridge='br0'/> <model type='virtio'/> </interface> <serial type='dev'> <source path='/dev/ttyS0'/> <target port='0'/> </serial> <console type='dev'> <source path='/dev/ttyS0'/> <target port='0'/> </console> <input type='mouse' bus='ps2'/> <graphics type='vnc' port='-1' autoport='yes'/> <video> <model type='cirrus' vram='9216' heads='1'/> </video> </devices> </domain> And this is the error message that virt manager shows Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/engine.py", line 588, in run_domain vm.startup() File "/usr/share/virt-manager/virtManager/domain.py", line 150, in startup self._backend.create() File "/usr/lib/python2.6/dist-packages/libvirt.py", line 300, in create if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self) libvirtError: monitor socket did not show up.: Connection refused I agree with Fjodor, the importance should be heightened. Without serial port virtualization a lot of functionalities could be lost. For example i need the serial port for the installation of a fax server (hylafax) that is using a modem connected to the host's physical serial port (/dev/ttyS0). If you need to do some tests I can do that -- map serial port throws "chardev: opening backend "tty" failed" https://bugs.launchpad.net/bugs/578527 You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to libvirt in ubuntu. -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs