In comparison, when attempting to lunch a VitualBox VM, it fails with a slightly better error message at least directing one to investigate what else would be using a hypervisor. But it also suggests some rather drastic steps to do with recompiling the kernel to remove KVM kernel extension - wow:
========================== Failed to open a session for the virtual machine core-plus-vm. VT-x is being used by another hypervisor (VERR_VMX_IN_VMX_ROOT_MODE). VirtualBox can't operate in VMX root mode. Please disable the KVM kernel extension, recompile your kernel and reboot (VERR_VMX_IN_VMX_ROOT_MODE). Result Code: NS_ERROR_FAILURE (0x80004005) Component: ConsoleWrap Interface: IConsole {872da645-4a9b-1727-bee2-5585105b9eed} -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1393842 Title: libvirt does not grant qemu-guest-agent channel perms To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1393842/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs