Keyboard and mouse doesn't function from the booting stage onward. Using 18.04 on Dell Inspirion Laptop

After updating Ubuntu instead of restarting my laptop I edited the GRUB configuration file in /etc/default/grub and changed the line:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" 

To:

GRUB_CMDLINE_LINUX_DEFAULT="i8042.direct i8042.dumbkbd" 

After doing those changes I restarted the laptop. I can make only a single click after that it stops working and when I press any key on the keyboard keeps pressing the ` key and will get stuck. This only happens on the laptop's keyboard and touchpad. When I connect an external keyboard or mouse it works just fine.

I tried changing the GRUB file back to how it was before but the problem still persists. I am completely inexperienced with the GRUB settings. I am using version 18.04.3 LTS.

Sorted by: Reset to default

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