因此我下载了 Ubuntu 16.04.4 iso 文件并尝试在 qemu 上运行它，但它出现了以下错误：
This kernel requires the following features not present on the CPU:
pae cmov
Unable to boot - please use a kernel appropriate for your CPU.
因此，我抱着不大希望尝试在虚拟机管理器上运行它，但是，它当然给了我一个错误：
Unable to complete install: 'XML error: No PCI buses available'
Traceback (most recent call last):
File "/usr/share/virt-manager/virtManager/asyncjob.py", line 75, in cb_wrapper
callback(asyncjob, *args, **kwargs)
File "/usr/share/virt-manager/virtManager/create.py", line 2119, in _do_async_install
guest.installer_instance.start_install(guest, meter=meter)
File "/usr/share/virt-manager/virtinst/installer.py", line 419, in start_install
doboot, transient)
File "/usr/share/virt-manager/virtinst/installer.py", line 362, in _create_guest
domain = self.conn.createXML(install_xml or final_xml, 0)
File "/usr/lib/python3/dist-packages/libvirt.py", line 3732, in createXML
if ret is None:raise libvirtError('virDomainCreateXML() failed', conn=self)
libvirt.libvirtError: XML error: No PCI buses available
顺便说一下，我正在使用 raspberry pi 4 在 qemu/虚拟机管理器上运行 ubuntu。