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CTL Chromebook J2 / J4 (google-veyron-jerry)

From postmarketOS Wiki
Note This device is supported as part of a generic port. Refer to Google Veyron Chromebook (google-veyron) for installation instructions and more information.
CTL Chromebook J2
J4
Manufacturer CTL
Name Chromebook J2
J4
Codename google-veyron-jerry
Released 2015
Type laptop
Hardware
Chipset Rockchip RK3288
CPU 4x 1.8 GHz Cortex-A17
GPU Mali-T760 MP4
Display 1366x768
Storage 16 GB eMMC
Memory 2 / 4 GB
Architecture armv7
Software
Original software
The software and version the device was shipped with.
ChromeOS
Extended version
The most recent supported version from the manufacturer.
ChromeOS
FOSS bootloader partial
postmarketOS
Category community
Mainline
Instead of a Linux kernel fork, it is possible to run (Close to) Mainline.
yes
Generic port Google Veyron Chromebook (google-veyron)
Device package device-google-veyron
Kernel package linux-postmarketos-rockchip
Features
Battery
Whether charging and battery level reporting work.
Works
Screen
Whether the display works; ideally with sleep mode and brightness control.
Works
Keyboard
Whether the built-in physical keyboard works.
Works
Touchpad
Whether the built-in touchpad works.
Works
Multimedia
3D Acceleration
Works
Audio
Audio playback, microphone, headset and buttons.
Works
Camera
Broken
Connectivity
WiFi
Works
Bluetooth
Works
Miscellaneous
FDE
Full disk encryption and unlocking with unl0kr.
Works
USB-A
Whether the full-sized USB-A port works.
Works
HDMI/DP
Video and audio output with HDMI or DisplayPort.
Works
Sensors
Hall Effect
Measures magnetic fields; usually used as a flip cover sensor
Works
U-Boot
Primary Bootloader
Whether it is possible to replace stock bootloader with U-Boot.
Untested
Secondary Bootloader
Whether it is possible to chainload U-Boot from stock bootloader.
Works
Mainline
Whether latest upstream versions of U-Boot are not broken and it is possible to use them.
Broken
Internal Storage
Whether it is possible to boot from internal storage (e.g. eMMC or UFS).
Untested
SD card
Whether it is possible to boot from SD card.
Works
USB Host
Whether it is possible to boot from a USB storage or connect a keyboard.
Untested
Display
Works
Keyboard
Works

Users owning this device