nixos/profiles/hardware/ME909u-521.nix

   1 # Configuration for the ME909u-521 mini PCIe card (12d1:1573)
   2 # Beware that productId=1573 has been reused by Huawei for other cards...
   3 { pkgs, lib, ... }:
   4 {
   5   # sudo mmcli -m --command=
   6   # - AT^WAKEUPCFG=?
   7   # - Restart the module: AT+CFUN=1,1
   8   # - Power off the module: AT^MSO
   9   # - Set the +CREG unsolicited indication: AT+CREG=1
  10   #
  11   # sudo mmcli --modem 0 --set-allowed-modes='2G|3G|4G' --set-preferred-mode=4G
  12   networking.networkmanager.enable = true;
  13
  14   # Enable usb_modeswitch
  15   hardware.usb-modeswitch.enable = true;
  16   # https://forum.openwrt.org/t/cdc-ether-ethertype-unknown-0x0808-on-huawei-me909u-521/5509/2
  17   # https://gitlab.freedesktop.org/mobile-broadband/ModemManager/-/issues/635
  18   environment.etc."usb_modeswitch.d".source = lib.mkForce (pkgs.writeTextDir "12d1:1573" ''
  19     # Huawei ME909u-521: select the QMI interface, which has qmi_wwan_rx_fixup()
  20     Configuration=1
  21   '');
  22
  23   environment.systemPackages = [
  24     pkgs.libqmi
  25   ];
  26
  27 }