Fault Description:

Ubuntu (16.04) After the system is booted up, the mouse and keyboard fail. There is no response. The system cannot be operated, accessed or restarted.

Cause of failure:

Ubuntu’s desktop environment was destroyed by the installation of software with a similar theme or format, i.e. the ubuntu-Desktop of the system could not find the path.

Solutions:

1. Forcibly restart the PC (press the power key) and keep pressing Esc to enter the GRUB screen

2. Select recovery Mode and press Enter

Menu commands:

<1> resume

Resume - Resume Normal boot. This mode is provided to users who accidentally enter this option, allowing them to resume the normal boot modeCopy the code

<2> clean

Clean -- Try to make free space Clean software packages, Try to clear unnecessary file storage space on the hard disk.Copy the code

<3> dpkg

DPKG -- Repair broken packagesCopy the code

<4> failsafeX

failsafeX --- Run inFailsafe Graphic Mode Runs in secure graphic modeCopy the code

<5> fsck

FSCK -- Check all File System Check and repair bad sectors or logical bad sectors. Scan and repair disks or hard disks. Suitable for abnormal startupCopy the code

<6> grub

Grub -- Update GRUB bootloader Updates GRUB bootCopy the code

<7> network

Shell interface with network connection, directly start in text mode, and Enable network connection supportCopy the code

<8> root

Root -- Drop to root shell prompt Shell interface of the highest administratorCopy the code

<9> system-summary

System-summary -- System summary View system information or dataCopy the code

3. Select Resume — Resume Normal boot and Enter (Enter)

4. After entering the TTY command, a white blinking cursor appears in the upper left corner. Press Ctrl + Alt + F1 to enter the TTY command mode

The interface prompts users to log in: enter as root account (other accounts have no permission to log in)

From the command line, enter startx:

startx
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When you start the GUI, an error message is displayed:

/etc/X11/Xinit/xserverrc: 3: exec: /usr/bin/X: not found
xinit: giving up
...
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This error occurred because the Ubuntu-desktop could not find the path. Solution: Install Ubuntu-desktop and run the following command:

sudo apt-get install ubuntu-desktop
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5. After the installation, run the restart command

Sudo shutdown -r now or sudo rerootCopy the code

References:

Blog.csdn.net/chichoxian/…

Blog.csdn.net/zjwcdd/arti…