Samsung Chromebook

Better touchpad responsiveness

Create the file /etc/X11/xorg.conf.d/50-touchpad.conf and add the following to it:

Section "InputClass"
        Identifier              "touchpad"
        MatchIsTouchpad         "on"
        Option                  "FingerHigh"    "5"
        Option                  "FingerLow"     "5"

Enable audio

  1. Install alsa-utils: pacman -S alsa-utils
  2. Run alsamixer as root.
  3. Arrow right until you see four items starting with Left Speaker Mixer, and press M on all four channels to un-mute them.
  4. Arrow right some more until you find four more starting with Right Speaker Mixer and un-mute them as well.
  5. Arrow all the way back left to the Speaker channel and raise the volume a little. Keep it low (< 50ish), since alsa will let you get dangerously high for these speakers.

Suspend when closing the lid

Install acpid and pm-utils: pacman -S acpid pm-utils

Edit /etc/acpi/ and near the bottom you'll see the button/lid section. Add pm-suspend to the close section to look like:

    case "$3" in
            logger 'LID closed'

Enable and start acpid:

systemctl enable acpid
systemctl start acpid

Closing the lid will now trigger a suspend, and opening it will wake the system.

User permissions for backlight control

To allow all users to modify the backlight control at /sys/class/backlight/pwm-backlight.0/brightness, create and edit the file /etc/tmpfiles.d/brightness.conf with these contents:

f /sys/class/backlight/pwm-backlight.0/brightness 0666 - - - 800

On boot, systemd will now set the permissions of that control file to be world writable. Acceptable values are 0-2800.

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