wiki/Samsung_Chromebook.md

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2015-11-26 18:24:57 +00:00
## 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"
EndSection
```
## 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/handler.sh and near the bottom you'll see the button/lid section. Add pm-suspend to the close section to look like:
```
button/lid)
case "$3" in
close)
logger 'LID closed'
pm-suspend
;;
```
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.