I have installed Ubuntu 16.04.6 LTS. On booting the mouse does not appear. I have no idea how to solve this issue. I have seen the forum and tried the command :

sudo modprobe psmouse

Does anyone have the solution to this?

1

2 Answers

Check if your mouse is recognized:

xsetpointer -l | grep Pointer

If you get no output please unplug and re-plug your mouse and reboot.
Then run:

gsettings set org.gnome.settings-daemon.plugins.cursor active false

If that doesn't work run:

sudo modprobe -r psmouse && sudo modprobe psmouse

Also update and upgrade

sudo apt update
sudo apt upgrade -y

If you've successfully installed Ubuntu and presuming you've installed the Desktop version (as someone who'd be installing server wouldn't expect a GUI for that matter), then to add to Rayleigh's solution, try to see if this still occurs when running a Live version (boot from CD/USB) and see if the problem persists. Then hit Ctrl+Alt+T to bring up the terminal and follow Rayleigh's instructions.

However if you've successfully installed Ubuntu and did not notice there was no mouse during installation, then I wonder if you were installing Ubuntu server. But, if you meant to say "While installing..." then after running

xsetpointer -l | grep Pointer

if the output doesn't include an entry with [XExtensionPointer] at the end, then you may also try

sudo apt-get install tlp

if it doesn't ask you to remove anything, then just type "Y" for Yes to continue. After it's compelete, run the xsetpointer full command again and if a new entry has been added, unplug and replug your mouse to see if that has resolved your issue.

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