vi /etc/modprobe.d/blacklist-nouveau.conf

blacklist nouveau
options nouveau modeset=0

sudo -i  #切换到root
passwd   #修改密码

df -h

Filesystem                         Size  Used Avail Use% Mounted on
udev                               7.7G     0  7.7G   0% /dev
tmpfs                              1.6G  1.6M  1.6G   1% /run
/dev/mapper/ubuntu--vg-ubuntu--lv  438G   38G  380G  10% /
tmpfs                              7.8G     0  7.8G   0% /dev/shm
tmpfs                              5.0M     0  5.0M   0% /run/lock
tmpfs                              7.8G     0  7.8G   0% /sys/fs/cgroup
/dev/sdb2                          976M  509M  401M  56% /boot
/dev/sdb1                          511M  7.9M  504M   2% /boot/efi
/dev/loop0                          56M   56M     0 100% /snap/core18/1944
/dev/loop1                          70M   70M     0 100% /snap/lxd/19188
/dev/loop2                          56M   56M     0 100% /snap/core18/1997
/dev/loop3                          68M   68M     0 100% /snap/lxd/20326
/dev/loop4                          33M   33M     0 100% /snap/snapd/11588
/dev/loop5                          32M   32M     0 100% /snap/snapd/10707
overlay                            438G   38G  380G  10% /var/lib/docker/overlay2/099fd9c0432112e7161a82a5db639648e4e6b154aabdcde39c7c43b0aa3ab1cc/merged
tmpfs                              1.6G     0  1.6G   0% /run/user/0

linux-headers-5.10.0-051000_5.10.0-051000.202012132330_all.deb
linux-headers-5.10.0-051000-generic_5.10.0-051000.202012132330_amd64.deb
linux-image-unsigned-5.10.0-051000-generic_5.10.0-051000.202012132330_amd64.deb
linux-modules-5.10.0-051000-generic_5.10.0-051000.202012132330_amd64.deb

distribution=$(. /etc/os-release;echo $ID$VERSION_ID) \
   && curl -s -L https://nvidia.github.io/nvidia-docker/gpgkey | sudo apt-key add - \
   && curl -s -L https://nvidia.github.io/nvidia-docker/$distribution/nvidia-docker.list | sudo tee /etc/apt/sources.list.d/nvidia-docker.list \
   && curl -s -L https://nvidia.github.io/nvidia-container-runtime/experimental/$distribution/nvidia-container-runtime.list | sudo tee /etc/apt/sources.list.d/nvidia-container-runtime.list

grub-mkpasswd-pbkdf2

Enter password: 123123
Reenter password: 123123
PBKDF2 hash of your password is grub.pbkdf2.sha512.10000.932D9701F404A1EFB254E02DFE7690F8CD41173588ADC409DD221EC82A522032AFC4F12AFD39477B63A31AF707CE18711AB186D1917B692C0FAC3463B52C2369.EB7CEB80172F3B55C52A405C89507F1113BFD24CF3F5585295274351D22CC53AB23A7F9FC26105F08300DE5B0763704D3F0400649127365AE2681F982441A163

fdisk -l

Disk /dev/sda: 931.5 GiB, 1000204886016 bytes, 1953525168 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disklabel type: dos
Disk identifier: 0x0153111b

apt install iotop

apt install sysstat

vi /lib/systemd/system/rc.local.service

[Unit]
Description=/etc/rc.local Compatibility
ConditionFileIsExecutable=/etc/rc.local
After=network.target

[Service]
Type=forking
ExecStart=/etc/rc.local start
TimeoutSec=0
RemainAfterExit=yes