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I have installed Ubuntu in a Chromebook Acer C720P but neither Touchpad nor Touchscreen nor Microphone are working, I have flashed the ROM using John Lewis help and Ubuntu 14.04 was installed from scratch.

https://johnlewis.ie/custom-chromebook-firmware/rom-download/

Any suggestion will be appreciate!

Castiblanco
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  • Did you use ChrUbuntu or Crouton? Also is your chromebook Acer C720 or Acer C720P –  Mar 18 '15 at 00:39
  • Hi @ethanbmnz, it is an Acer C720P (I omitted the P - It has touch screen)... About the method I used John Lewis' method, I know it is not ChrUbuntu since I used it before but It didn't work fine for me, but I don't know if there is a difference between Crouton and what I done.

    I used this script: https://johnlewis.ie/custom-chromebook-firmware/rom-download

     – Castiblanco Mar 18 '15 at 00:47
  • Crouton allows switching between ChromeOS and your chosen crouton target without rebooting. ChrUbuntu means you have to reboot your Chromebook if you're in ChromeOS and want to use Unity/Ubuntu. Why are you flashing John Lewis's ROM? If you want to reinstall ChromeOS, make a recovery USB/SD card via the chromebook recovery utility [http://tinyurl.com/chromebookrecoveryutil ], wait until the recovery USB/SD card has been made, then shut down your chromebook, take out your SD/USB, press and hold esc and refresh then press the power button. Insert your SD/USB card and wait. –  Mar 18 '15 at 01:01
  • 14.04 c720p scripts. – bain Mar 18 '15 at 01:09
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    The scripts mostly just install some new kernel modules. According to this Arch forum the drivers are in Ubuntu's linux-3.16.7-ckt4 so you could try just upgrading the kernel. – bain Mar 18 '15 at 01:17
  • Thanks @ethanbmnz, but I don't have ChromeOS and I don't want to use anymore since I felt it limited the machine a lot, that is why I used another method in order to delete everything and install just Ubuntu. – Castiblanco Mar 18 '15 at 01:29
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    @bain, I just followed the upgrading kernel instructions from that post and it WORKED!!!! Could you please answer me question with that information in order to have documentation, and I will also like to mark your answer as the correct one since you really deserve the bounty. – Castiblanco Mar 18 '15 at 02:04

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The linux-3.13 kernel in Ubuntu 14.04 does not have drivers for the C720P touchpad and touchscreen. You will need to install linux-3.16.7-ckt4 or later. You can upgrade the kernel by following these instructions.

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bain
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