Acer C720 Chromebook
The Acer C720 Chromebook (and newer Chromebooks in general) features a "legacy boot" mode that makes it easy to boot Linux and other operating systems. The legacy boot mode is provided by the SeaBIOS payload of coreboot. SeaBIOS behaves like a traditional BIOS that boots into the MBR of a disk, and from there into your standard bootloaders like Syslinux and GRUB.
The installation process for Haswell Chromebooks described at the Chromebook page.
- Edit the Xorg touchpad configuration file
Add the Xorg touchpad configuration below for better usability (increases touchpad sensitivity).
Section "InputClass" Identifier "touchpad peppy cyapa" MatchIsTouchpad "on" MatchDevicePath "/dev/input/event*" MatchProduct "cyapa" Option "FingerLow" "10" Option "FingerHigh" "10" EndSection
If you want to remove the "right-click" behavior from the touchpad from the bottom right area (you can still right-click with two finger clicks), you should comment out the following section from
#Section "InputClass" # Identifier "Default clickpad buttons" # MatchDriver "synaptics" # Option "SoftButtonAreas" "50% 0 82% 0 0 0 0 0" # To disable the bottom edge area so the buttons only work as buttons, # not for movement, set the AreaBottomEdge # Option "AreaBottomEdge" "82%" #EndSection
Improving WLAN and BT performance
The C720 comes with a AR9462 WLAN+BT chip. Both Bluetooth and WiFi can use 2.4 GHz, which can cause interference. You can enable Bluetooth coexistence to improve the performance of the card. Additionally, you can enable power savings and antennae diversity to reduce power usage and boost performance:
options ath9k btcoex_enable=1 ps_enable=1 bt_ant_diversity=1
Post Installation Configuration
For information on general Chromebook post installation configuration (hotkeys, power key handling ...) see Chromebook#Post_Installation_Configuration.
Locating the Write-Protect Screw
- Remove the bottom panel of the laptop by removing the 12 visible screws and another one underneath the warranty sticker.
- Separate the plastic starting at the back.
- Remove completely the write-protect screw from the motherboard, which is labelled as #7 in this picture.