去上了大号，

回来就发现:

①鼠标可以移动，但是不能点击

②键盘无法输入

临时解决方案如下:

①ctrl+alt+F1(1~6)

按下哪个进入到黑色命令行界面就停下不要再按了

②ps -e|grep tty7

③kill -9 进程号

如果不行就root权限重试

然后会自动跳转到ubuntu的登录界面，

此时鼠标和键盘就都恢复了。

相关硬件设备是:

00:00.0 Host bridge: Intel Corporation Device 9b43 (rev 05) 00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor PCIe Controller (x16) (rev 05) 00:02.0 Display controller: Intel Corporation Device 9bc5 (rev 05) 00:08.0 System peripheral: Intel Corporation Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th/8th Gen Core Processor Gaussian Mixture Model 00:12.0 Signal processing controller: Intel Corporation Comet Lake PCH Thermal Controller 00:14.0 USB controller: Intel Corporation Comet Lake USB 3.1 xHCI Host Controller 00:14.2 RAM memory: Intel Corporation Comet Lake PCH Shared SRAM 00:15.0 Serial bus controller [0c80]: Intel Corporation Comet Lake PCH Serial IO I2C Controller #0 00:16.0 Communication controller: Intel Corporation Comet Lake HECI Controller 00:17.0 SATA controller: Intel Corporation Device 06d2 00:1b.0 PCI bridge: Intel Corporation Comet Lake PCI Express Root Port #21 (rev f0) 00:1c.0 PCI bridge: Intel Corporation Device 06bd (rev f0) 00:1c.7 PCI bridge: Intel Corporation Device 06bf (rev f0) 00:1f.0 ISA bridge: Intel Corporation Device 0684 00:1f.3 Audio device: Intel Corporation Comet Lake PCH cAVS 00:1f.4 SMBus: Intel Corporation Comet Lake PCH SMBus Controller 00:1f.5 Serial bus controller [0c80]: Intel Corporation Comet Lake PCH SPI Controller 00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (11) I219-V 01:00.0 VGA compatible controller: NVIDIA Corporation GK208B [GeForce GT 730] (rev a1) 01:00.1 Audio device: NVIDIA Corporation GK208 HDMI/DP Audio Controller (rev a1) 02:00.0 Non-Volatile memory controller: KIOXIA Corporation Device 0001 03:00.0 PCI bridge: Texas Instruments XIO2001 PCI Express-to-PCI Bridge 05:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8723DE 802.11b/g/n PCIe Adapter  

总觉得无线网卡在搞鬼，暂时不细究了，上班没时间

补充：

发现是显卡驱动搞鬼，参考下方自己笔记解决：

ubuntu20.04鼠标只能移动不能点击＋键盘无法输入问题