我设置了 GPU 直通，它可以工作，但是 ubuntu 正在向 modprobe 进程发送垃圾邮件，它消耗了大量 CPU，这是来自的日志dmesg：
[22014.015852] PKCS#7 signature not signed with a trusted key
[22014.019755] PKCS#7 signature not signed with a trusted key
[22014.028669] nvidia-nvlink: Nvlink Core is being initialized, major device number 236
[22014.029070] NVRM: The NVIDIA probe routine was not called for 1 device(s).
[22014.029070] NVRM: This can occur when a driver such as:
NVRM: nouveau, rivafb, nvidiafb or rivatv
NVRM: was loaded and obtained ownership of the NVIDIA device(s).
[22014.029071] NVRM: Try unloading the conflicting kernel module (and/or
NVRM: reconfigure your kernel without the conflicting
NVRM: driver(s)), then try loading the NVIDIA kernel module
NVRM: again.
[22014.029071] NVRM: No NVIDIA devices probed.
[22014.029190] nvidia-nvlink: Unregistered the Nvlink Core, major device number 236