Used ofono 1.16 for a long time. While upgrading to 1.22 there is a signal 11. (Also on 1.23) Target: armv7ahf-vfp-neon-oe-linux-gnueabi Execute: ofonod -d -n . . . ofono-1.22/src/modem.c:ofono_modem_driver_register() driver: 0x130088, name: infineon ofono-1.22/src/modem.c:ofono_modem_driver_register() driver: 0x130040, name: ril ofono-1.22/plugins/udevng.c:udev_start() ofono-1.22/plugins/udevng.c:enumerate_devices() ofono-1.22/plugins/udevng.c:add_serial_device() Device is missing required OFONO_DRIVER property ofono-1.22/plugins/udevng.c:add_serial_device() Device is missing required OFONO_DRIVER property ofono-1.22/plugins/udevng.c:add_serial_device() Device is missing required OFONO_DRIVER property ofono-1.22/plugins/udevng.c:add_serial_device() Device is missing required OFONO_DRIVER property ofono-1.22/plugins/udevng.c:add_serial_device() Device is missing required OFONO_DRIVER property ofono-1.22/plugins/udevng.c:add_serial_device() Device is missing required OFONO_DRIVER property ofono-1.22/plugins/udevng.c:add_serial_device() Device is missing required OFONO_DRIVER property ofono-1.22/plugins/udevng.c:add_serial_device() Device is missing required OFONO_DRIVER property ofono-1.22/plugins/udevng.c:add_serial_device() Device is missing required OFONO_DRIVER property ofono-1.22/plugins/udevng.c:check_usb_device() hub [(null):(null)] ofono-1.22/plugins/udevng.c:check_usb_device() usb [(null):(null)] ofono-1.22/plugins/udevng.c:check_usb_device() usb [(null):(null)] ofono-1.22/plugins/udevng.c:check_usb_device() cdc_acm [(null):(null)] ofonod[27193]: Aborting (signal 11) [ofonod] Can someone shine a light on this?