I face a problem in laptop touchpad not responding while upgrading ubuntu 14.04 to 14.10 or newer versions. Touchpad was working fine in ubuntu 14.04 but when I upgrade ubuntu to 14.10 and 15.10 the touchpad seems to be unresponsive.It works perfectly on Windows and when I use a wireless mouse it works as well.
To solve this problem you will need to blacklist
i2c-hid. To do this follow these steps:
blacklist i2c-hidtowards the end of the file.
- Save and Reboot
After reboot you can see your touchpad is working fine. If not so then try the alternate solution that is:
sudo -H gedit /etc/default/grub
- In the open window edit line
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"it should look this way
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i8042.nopnp"
- Save the file and run
- Run these:
echo "blacklist i2c_hid" | sudo tee /etc/modprobe.d/i2c-hid.conf
sudo depmod -a
sudo update-initramfs -u
echo "synaptics_i2c" | sudo tee -a /etc/modules
- Save and reboot.
Hope It will solv your problem. For more detail please refer link.