Known Issues

Note

This section is incomplete and is being revised.

This page will contain a list of issues that were known at the time of the kit’s release, providing links to issue trackers where relevant.

A list of issues with the development kit itself can found using this link to open devkit issues.

Known issues with the operating system and applications under development for the Librem 5 can be found in the lists of issues for the OS Issues and Apps Issues repositories.

Issues

  • Development boards shipped before 2019-01-15 have a non-functioning display (see linux-emcraft issue 5). This issue has since been resolved and can be fixed by reflashing the software on the board – see Flashing the System Image for instructions. This update can also be applied to boards shipped after this date. See Diagnosing LCD Problems if you have problems with the display.

  • The sshd daemon can take up to 480 seconds to start after boot – see linux-emcraft issue 2 for details.

  • The Bluetooth audio interface is incorrectly connected, making it unlikely to work. In addition, software support for this feature is missing in the driver. See dvk-mx8m-bsb issue 3 for details.

  • When running older versions of the system software the board could reset when under heavy load, either due to processor-intensive software or peripherals that draw large currents. See Spurious Resets for possible workarounds for this behavior.

Status of Subsystems

The following table shows the status of the subsystems on the development board, indicating the level to which the hardware has been validated and whether user space software is in place to drive it.

Status of subsystems

Subystem

Validated

Integrated

Charge Controller

Yes

USB-C

Yes

Serial Downloader

Yes

eMMC boot

Yes

SoM - with 3GB RAM, 32GB eMMC

Yes

UART Debug

Yes

Powering from 18650 battery

Yes

Charge controller’s thermistor

Yes

Ethernet

Yes

Audio Codec

Yes

Mini-HDMI

Yes

WWAN module

Yes

WWAN antenna

Yes

SIM card (able to make a call)

Yes

WWAN kill via GPIO3_IO04 (420 in Linux) & HKS

Yes

GNSS (aka GPS)

Yes

USB Hub and micro-SD

Yes

USB Host

Yes

USB Peripheral

Yes

RedPine WiFi/BT M.2 module

Yes

Partially

RTC

Yes

Haptic motor

Yes

buttons (power button, reset button, volume up, volume down)

Yes

User LED

Yes

Power indicator LEDs

Yes

HP_DET

Yes

Display’s LED backlight

Yes

SPI NOR Flash

Yes

Speaker

Yes

Headphone jack

Yes

Smart card reader

Yes

Touch controller

Yes

Yes

JTAG

Yes

WLAN/BT antennae

Yes

On-board microphone

Yes

Headset microphone

Yes

HKSs

Yes

Microphone select IC

Yes

MIPI DSI LCD panel

Yes

Yes

Camera

Yes

IMU

Yes

Proximity/Ambient light sensor

Yes

USB OTG

Partially

USB-C role switching

No

Bluetooth (UART4)

Partially

WWAN I2S interface

Partially

Bluetooth I2S interface

No