Known Issues


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.


  • 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