Kobo Clara 2E (kobo-clara2e)

From postmarketOS
Kobo Clara 2E
File:CHANGE ME TO DEVICE CODENAME.jpg
CHANGE_ME
Manufacturer Kobo
Name Clara 2E
Codename kobo-clara2e
Released 2022
Category testing
Pre-built images no
Original software Kobo firmware
postmarketOS kernel 6.9.0
Hardware
Chipset Freescale i.MX6SLL
CPU 1x 1 GHz Cortex-A9
GPU PXP + EPDC
Display 1448x1072 6 inch eink/epaper
Storage Internal 16GB uSD card
Memory 512 MB
Architecture ARMv7
Type Ebook reader
Features
USB Networking
Works
Flashing
Touchscreen
Works
Display
Broken
WiFi
Partial
FDE
Mainline
Works
Battery
Partial
Bluetooth
Partial
GPS
Internal storage
USB OTG
Sensors
Accelerometer
Broken
Ambient Light
Proximity
Hall Effect
Power Sensor
Misc
Stylus
Memory Card
Works
FOSS bootloader
Works


Contributors

  • Andi

Users owning this device

  • Andi (Notes: Rev B)


How to enter flash mode

Installation

An original Kobo Clara 2E SD card or a copy (e.g. via dd) is recommended. The unpartitioned space at the beginning of the SD card contains the E-ink panel waveform information. This information is device batch specific and is copied to /lib/firmware/imx/epdc/epdc.fw on boot.

Replacing internal µSD Internal µSD card can be replaced by something bigger.

A recommended practice to install software is to clone the SD card and keep the old one as backup or have at least the hidden waveform partition in place. before doing pmbootstrap install

So basically pull out µSD and connect to your PC and do:

 dd if=/dev/sdX of=clara2e-backup.img

replace with something bigger (in reality only the waveform is needed but for simplicity) and do:

 dd if=clara2e-backup.img of=/dev/sdX

and then use that sdcard with pmbootstrap install --sdcard

Variants A/B

There are two variants of the device differencing in the PMIC used for the display. A has SY7636 and B has JD9930. The latter does not store the Vcom voltage needed contrary to the chips in the other ebook readers which all store the volatge non-volatile. The voltage differs a bit per device batch.

Bluetooth/WLAN

Bluetooth depends on the resources being enabled by the WLAN driver.

See also