Touchpad not working on Ubuntu 14.04

Question

I am using Dell Inspiron 15R 5521 laptop. It had Ubuntu 12.04 installed at time of purchase. Everything was working fine.Then i installed windows in it and now i have removed windows and installed Ubuntu 14.04 . The problem i am facing is that my touchpad is not detected in it. I searched on google , askUbuntu but could not get solution to my problem. Also i went through this link (https://help.ubuntu.com/community/SynapticsTouchpad) but it did not help. Can you please help me here. Let me know what other information is required here.

Thanks.

try with installing sudo apt-get install xserver-xorg-input-all. If it is already installed, purge and reinstall. — , Aug 04 '14 at 07:46

score 1 · Answer 1 · edited Nov 26 '19 at 12:09

Reference: Touchpad under 16.04 not working

Solution #1

Modify the GRUB file with a text editor (nano works too)
```
sudo -H gedit /etc/default/grub
```

Locate this line in the grub file

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

Replace it with the following:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i8042.nopnp"

Save the GRUB file and run the update
```
sudo update-grub
```
Shutdown / reboot for the changes to take effect.
```
sudo shutdown -r now
```

Solution #2

Modify the GRUB file with a text editor (nano works too)
```
sudo -H gedit /etc/default/grub
```

Locate this line in the grub file

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

Replace it with the following: (ONLY DIFFERENCE FROM SOLUTION 1)
```
GRUB_CMDLINE_LINUX_DEFAULT="i8042.reset quiet splash"
```
Save the GRUB file and run the update
```
sudo update-grub
```
Shutdown / reboot for the changes to take effect.
```
sudo shutdown -r now
```

Mahendra Gunawardena · Answer 2 · 2019-11-26T11:58:18.530

My research indicate that your laptop has a SynPS/2 Synaptics TouchPad

Execute the following command

xinput list

You should see a output like the following

⎡ Virtual core pointer                      id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer            id=4    [slave  pointer  (2)]
⎜   ↳ Logitech Unifying Device. Wireless PID:1025   id=11   [slave  pointer  (2)]
⎣ Virtual core keyboard                     id=3    [master keyboard (2)]
    ↳ Virtual core XTEST keyboard           id=5    [slave  keyboard (3)]
    ↳ Power Button                          id=6    [slave  keyboard (3)]
    ↳ Video Bus                             id=7    [slave  keyboard (3)]
    ↳ Power Button                          id=8    [slave  keyboard (3)]
    ↳ USB Camera                            id=9    [slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard          id=10   [slave  keyboard (3)]
    ↳ Toshiba input device                  id=12   [slave  keyboard (3)]
    ↳ Logitech Logitech Wireless Headset    id=14   [slave  keyboard (3)]

To enable the touch pad

xinput set-prop [device id] "Device Enabled" 1

You can do a following to check the properties

xinput --watch-props [device number]

You also can try

lsmod 
lsmod | grep mouse (Check the if the touchpad is loaded)

sudo modprobe -r psmouse
sudo modprobe psmouse proto=imps

Also you can take look at following post too.

Touchpad not working on MSi U130 after login in

I recommend xinput --list-props instead to check the device's properties, so the process ends up. — nightcod3r, Aug 13 '17 at 08:31

Touchpad not working on Ubuntu 14.04

2 Answers2

Solution #1

Solution #2

Linked