![]() The problem stems from initramfs attempting to use /dev/console (which refers to nonexisting /dev/ttyS0), having its logging functions unexpectedly return errors, and broking everything around. ![]() etc/default/grub.d/50-cloudimg-settings.cfg overrides it (see bug 1812752). etc/default/grub.d/50-cloudimg-settings.cfg, leaving only console=tty1, and Workaround: remove console=ttyS0 from GRUB_CMD_LINUX_DEFAULT in Uvt-simplestreams-libvirt sync release=bionic arch=amd64 label=release etc/default/ grub.d/ 50-cloudimg- settings. ![]() That editing /etc/default/grub is insufficient since Get the result of "update-grub" happen without having booted the system. However this must either be done on a system withĪserial port, or you have to jump through the appropriate hoops to be able to Workaround: remove console=ttyS0 from GRUB_CMD_ LINUX_DEFAULT in In other words, the VM stops working if a serial port is If you skip the serial/console definition deletion in the steps above, you'll Instead I see nothing beyond the normal kernel messages Virsh edit lp1573095 # delete and blocksĮxpected behaviour: succeeds when the VM is availableĪctual behaviour: hangs and eventually times outĪdditionally you can examine the screen with virt-manager. Uvt-kvm create -no-start lp1573095 release=bionic arch=amd64 label=release Uvt-simplestrea ms-libvirt sync release=bionic arch=amd64 label=release ![]() Here are full steps to reproduce this issue using tooling from Ubuntu only: ![]()
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