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My problem cannot be solved anymore because I reinstalled ubuntu 16.04. It works well.

I installed Ubuntu 16.04 in my old laptop Acer Aspire 3830 and installed the touchpad with the method I was not able to remember. After that day, I didn't use it. Today, I turned on my laptop. The keyboard and mouse were not working, but only the touchpad and some functional keys like on/off touchpad worked.

It is not a hardware problem, because I can use the keyboard in the other OS after multi-booting it.

I can edit grub at the boot menu, but cannot edit in Ubuntu desktop after entering the password using a screen keyboard.

Let me know possible solutions. Thanks.

Martin Thornton
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Bionts Holo
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  • See if the solutions here can help you: https://askubuntu.com/questions/299567/touchpad-not-working-on-acer-laptop – Peter Ark Apr 25 '17 at 10:54
  • My laptop worked well except for recognition of touchpad. It seems that fixing the touchpad problem caused the new problem. Your link seems to be different from my situation. Thanks. – Bionts Holo Apr 25 '17 at 11:09

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Sorry, I misinterpreted the question. Please check this:

USB devices not work after installation of ubuntu 14.04

The problem might be the usb configurations.

Peter Ark
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