Run update-grub and reboot virtual machine – now you should be able to use virsh console at the hypervisor. Uncomment the following line from /etc/inittab: T0:23:respawn:/sbin/getty -L ttyS0 9600 vt100 > GRUB_CMDLINE_LINUX_DEFAULT="console=ttyS0 quiet" – modify /etc/default/grub: GRUB_CMDLINE_LINUX_DEFAULT="quiet" – if not found, you need the following bit in the devices section of virtual guests XML-file (modifying usually requires a full shutdown-start sequence for the virtual): Depending on the guest architecture, some device busses can appear more than once, with a group of virtual devices tied to a virtual controller. – no changes required if required pty -devices are created automatically (-chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 in guest command line) As a reminder, how to enable serial console under KVM.
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