Raspberry Pi 4B
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      1. emteria Knowledge Base | Tutorials & Troubleshooting
      2. Hardware
      3. Raspberry Pi 4B

      Known issues with emteria.OS on Raspberry Pi 4B (RPi4)

      Known issues with emteria.OS for Raspberry Pi 4

      • Does not boot / low performance on 1 GB / 2 GB versions. You will need at least 4 GB version for Android itself.
      • Some performance and animation issues (v14.1.0)
      • No camera support (v14.1.0)
      • No progress image during update with RPi4 touchscreen (v11.x.x)
        • Touchscreen uses no default pixel format, which recovery does not support
        • Display stays black, but update is performed and device reboots automatically
      • No support for GSM/WiFi modules, neither USB nor GPIO
      • Missing apps and features:
        • TWRP (not planned)
      • Hardware:
        • Support for only one simultaneous Bluetooth connection
        • Spedal MF920Pro USB Webcam
        • Waveshare SKU: 16103, 5″5 touchscreen [forum discussion]
      • Display shuts down although "Keep awake" is enabled if you have "Extended brightness range" enabled, but your display does not support extended brightness
        • Disable "Extended brightness range"
      • Interferences of 2.4 GHz WiFi, USB3, and certain HDMI resolutions [forum discussion]

      Missing anything? Let us know in our forum!

      Past issues with emteria.OS for Raspberry Pi 4

      • No BLE support (fixed in v13.5.0)
      • No HDMI audio output (fixed in v13.4.0)
      • Rarely, WiFi connection cannot be established (fixed in v13.3.0)
        • Due to a race condition WiFi drivers sometimes cannot be loaded
        • Workaround is to reboot the device
      • Ethernet settings cannot be changed (fixed in v13.3.0)
      • No ssh/sftp functionality (fixed in v13.3.0)
      • Android Notification (fixed in v13.1.26)
        “Serial console enabled
        Performance is impacted. To disable, check bootloader”
        • You can get rid of it by disabling developer messages
      • Home screen flickers for 10 seconds after wake-up
      • Brightness/contrast is high with official RPi Touchscreen (fixed in v11.8.0)
      • Newer versions of the official touchscreen do not register touch events (fixed in v11.6.20)
        • There seems to be a newer controller revision with "generic ft5x06 (00)"
      • VNC image is distorted after screen rotation (fixed in v11.5.4)
        • Workaround: only start VNC server after rotating the screen
      • CSI cameras do not work in combination with a DSI display (fixed in v11.4.23)
      • Display flickers on transitions (fixed in v11.4.23)
      • Screen Rotation issues (fixed in v11.4.6)
        • Rotation is not persistent after reboot
          • Workaround:
            • Connect via adb to the device shell and use following commands:
            • settings put system accelometer_rotation 1
            • settings put system user_rotation X (where X is 0-3, whichever rotation you need)
        • 90°/270° rotation switches on screen rotation lock
      • Problems with Bluetooth LE (fixed in v11.3.16)