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.
| 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 |