JLinkARM.dll Open returned error 'Cannot connect to J-Link.' while connecting to nRF52840 DK v3.0.0

[vectr]

Hello, After doing several things on my Ubuntu 24 host (I don't what might cause problem):
-> Updating java OpenJDK to 17
-> running apt update & upgrade
-> modifying my script for restarting/flashing/ nRF52840 device: I was trying to face -105 JLINKARM_DLL_TIME_OUT_ERRORI added
NRFJPROG_connect_to_device_inst() and NRFJPROG_halt_inst() as was presented here: https://docs.nordicsemi.com/bundle/ug_nrf_cltools/page/UG/cltools/nrf_nrfjprogdll_calling_sequence.html)

I can't connect to nrf's 840 v3:

$ nrfjprog -v
nrfjprog version: 10.24.2 external
JLinkARM.dll version: 7.94e
$ nrfjprog -i
1050253557
1050205707
682357877
682924054
$ nrfjprog -s 682357877 --recover
Recovering device. This operation might take 30s.
Erasing user code and UICR flash areas.
$ nrfjprog -s 1050253557 --recover
[error] [ Client] - Encountered error -105: Command connect_to_emu_with_snr executed for 787 milliseconds with result -105
ERROR: Unable to connect to a debugger.
[error] [ Worker] - JLinkARM.dll Open returned error 'Cannot connect to J-Link.'
ERROR: The JLinkARM DLL timed out while communicating to the J-Link probe.
ERROR: If the error condition persists, run the same command again with
ERROR: argument -- log, contact Nordic Semiconductor and provide the generated
ERROR: log.log file to them.
NOTE: For additional output, try running again with logging enabled (--log).
NOTE: Any generated log error messages will be displayed.

Everything worked earlier. Can you help me?

[Håkon Alseth]

Hi,

 

Does the same kit behave similar on other PCs?

Have you tried switching out the USB cable for instance?

Checked that the "current consumption" jumper is present?

 

Kind regards,

Håkon

[vectr]

On my PC both 1050253557 and 1050205707 don't show -105 error on my personal PC (I tested it by running command: nrfjprog -r -s 1050205707). Both have ubuntu 24, both have same nrfjprog and JLink version.
Cable replacement did not helped. I replace them with nRF52840 DK v2.1.0 and them works on same usb cable.
"current consumption" jumper - do you mean "nRF current measurement" connector (P22)? I don't have this jumper shoted. 

[Håkon Alseth]

Hi,

 

vectr said:

On my PC both 1050253557 and 1050205707 don't show -105 error on my personal PC (I tested it by running command: nrfjprog -r -s 1050205707)

Both boards, ie. *557 and *707 works on your personal computer. Meaning, the boards themselves are working.

 

-> modifying my script for restarting/flashing/ nRF52840 device: I was trying to face -105 JLINKARM_DLL_TIME_OUT_ERRORI added
NRFJPROG_connect_to_device_inst() and NRFJPROG_halt_inst() as was presented here: https://docs.nordicsemi.com/bundle/ug_nrf_cltools/page/UG/cltools/nrf_nrfjprogdll_calling_sequence.html)

Is this script not exited properly at one time? Try to run this:

ps aux | grep -i jlink

And check if there's any zombie processes.

 

Kind regards,

Håkon

[vectr]

This script may not exit properly, I'm not sure. When I noticed issue with DK'ts I restored these changes.
This is how my script looks now:

from pynrfjprog import Hex, LowLevel
from pynrfjprog.APIError import APIError, NrfjprogdllErr

...

class JLinkManager:

   def __init__(

       self,
       product_chip_name: str,
       serial_number: int,
       name: str = None,
    ):

        self._device_family = DeviceFamily[self.device.name[:5]]
        self._api = LowLevel.API(self._device_family, log=log)

   def __enter__(
       self,
   ):
       self.open()
       return self

   def open(
       self,
   ):
   """Open connection to board."""
      try:
          self._api.open()
          self._api.connect_to_emu_with_snr(self.serial_number)
          return self._api.is_connected_to_emu()
      except APIError as error:
          raise CannotOpenError(f"[{self.name}] nrf APIError code: {error.err_code}.") from error

I don;t see zombie processes on computer with issue:
$ ps aux | grep -i jlink
ci 24981 0.0 0.0 9144 2304 pts/0 S+ 15:33 0:00 grep --color=auto -i jlink

[Håkon Alseth]

Hi,

 

You haven't by any chance updated udev and removed the nrf-rules?

https://github.com/NordicSemiconductor/nrf-udev/tree/main

 

Kind regards,

Håkon

[vectr]

I might not have installed nrf-udev, I download it from github and behavior did not changed.

[Håkon Alseth]

Hi,

vectr said:

I might not have installed nrf-udev, I download it from github and behavior did not changed.

You need to reboot to invoke new udev rules.

I'm running 24.04.1 myself, and just did a dist-upgrade and matched your nrfjprog/jlink versions:

nrfjprog --ids
1050272212

nrfjprog -v
nrfjprog version: 10.24.2 external
JLinkARM.dll version: 7.94e

 

Have not seen any issues like this on my side.

 

Have you tried different versions of jlink? I know that v7.96e is the latest that we bundle with nrf-command-line-tools, but you can update to a newer one for testing purposes: https://www.segger.com/downloads/jlink/

 

Kind regards,

Håkon

[vectr]

It did not helped, but I compare all files in /etc/udev/rules.d between my PC and other with problem with -105.
I noticed difference between 99-jlink.rules files. I copied file and it solved my issue.
Here are result of diff command:

30a31,34
> # sudo udevadm info --attribute-walk /dev/bus/usb/<Bus>/<Device> (extract <Bus> and <Device> from "lsusb")
> # Reload udev rules after rules file change:
> # sudo udevadm control --reload-rules
> # sudo udevadm trigger
49a54,64
> # Make sure that J-Links are not captured by modem manager service
> # as this service would try detect J-Link as a modem and send AT commands via the VCOM component which might not be liked by the target...
> #
> ATTR{idProduct}"0101", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"0102", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"0103", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"0104", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"0105", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"0107", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"0108", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> #
106a122,154
> # 0x103x: J_LINK_SEGGER_DRV + J_LINK_WINUSB_DRV does not make any sense, therefore skipped
> # 0x1050: J_LINK_SEGGER_DRV + 2x CDC
> # 0x1051: J_LINK_SEGGER_DRV + 2x CDC + MSD
> # 0x1052: J_LINK_SEGGER_DRV + 2x CDC + RNDIS
> # 0x1053: J_LINK_SEGGER_DRV + 2x CDC + RNDIS + MSD
> # 0x1054: J_LINK_SEGGER_DRV + 3x CDC
> # 0x1055: J_LINK_SEGGER_DRV + 3x CDC + MSD
> # 0x1056: J_LINK_SEGGER_DRV + 3x CDC + RNDIS
> # 0x1057: J_LINK_SEGGER_DRV + 3x CDC + RNDIS + MSD
> # 0x1058: J_LINK_SEGGER_DRV + HID + 2x CDC
> # 0x1059: J_LINK_SEGGER_DRV + HID + 2x CDC + MSD
> # 0x105a: J_LINK_SEGGER_DRV + HID + 2x CDC + RNDIS
> # 0x105b: J_LINK_SEGGER_DRV + HID + 2x CDC + RNDIS + MSD
> # 0x105c: J_LINK_SEGGER_DRV + HID + 3x CDC
> # 0x105d: J_LINK_SEGGER_DRV + HID + 3x CDC + MSD
> # 0x105e: J_LINK_SEGGER_DRV + HID + 3x CDC + RNDIS
> # 0x105f: J_LINK_SEGGER_DRV + HID + 3x CDC + RNDIS + MSD
> # 0x1060: J_LINK_WINUSB_DRV + 2x CDC
> # 0x1061: J_LINK_WINUSB_DRV + 2x CDC + MSD
> # 0x1062: J_LINK_WINUSB_DRV + 2x CDC + RNDIS
> # 0x1063: J_LINK_WINUSB_DRV + 2x CDC + RNDIS + MSD
> # 0x1064: J_LINK_WINUSB_DRV + 3x CDC
> # 0x1065: J_LINK_WINUSB_DRV + 3x CDC + MSD
> # 0x1066: J_LINK_WINUSB_DRV + 3x CDC + RNDIS
> # 0x1067: J_LINK_WINUSB_DRV + 3x CDC + RNDIS + MSD
> # 0x1068: J_LINK_WINUSB_DRV + HID + 2x CDC
> # 0x1069: J_LINK_WINUSB_DRV + HID + 2x CDC + MSD
> # 0x106a: J_LINK_WINUSB_DRV + HID + 2x CDC + RNDIS
> # 0x106b: J_LINK_WINUSB_DRV + HID + 2x CDC + RNDIS + MSD
> # 0x106c: J_LINK_WINUSB_DRV + HID + 3x CDC
> # 0x106d: J_LINK_WINUSB_DRV + HID + 3x CDC + MSD
> # 0x106e: J_LINK_WINUSB_DRV + HID + 3x CDC + RNDIS
> # 0x106f: J_LINK_WINUSB_DRV + HID + 3x CDC + RNDIS + MSD
154a203,363
> ATTR{idProduct}"1050", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"1051", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"1052", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"1053", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"1054", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"1055", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"1056", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"1057", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"1058", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"1059", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"105a", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"105b", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"105c", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"105d", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"105e", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"105f", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"1060", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"1061", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"1062", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"1063", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"1064", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"1065", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"1066", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"1067", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"1068", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"1069", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"106a", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"106b", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"106c", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"106d", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"106e", ATTR{idVendor}"1366", MODE="666"
> ATTR{idProduct}"106f", ATTR{idVendor}"1366", MODE="666"
> #
> # Handle known CMSIS-DAP probes (taken from mbed website and OpenOCD):
> # VID 0x1366 (SEGGER)
> # PID 0x1008-100f, 0x1018-101f, 0x1028-102f, 0x1058-105f, 0x1068-106f (SEGGER J-Link)
> # We cover all of them via idProduct=10* and idVendor=1366
> #
> # VID 0xC251 (Keil)
> # PID 0xF001: (LPC-Link-II CMSIS_DAP)
> # PID 0xF002: (OpenSDA CMSIS_DAP Freedom Board)
> # PID 0x2722: (Keil ULINK2 CMSIS-DAP)
> # VID 0x0D28 (mbed)
> # PID 0x0204: MBED CMSIS-DAP
> #
> KERNEL"hidraw*", ATTRS{idProduct}"10*", ATTRS{idVendor}"1366", MODE="666"
> KERNEL"hidraw*", ATTRS{idProduct}"f001", ATTRS{idVendor}"c251", MODE="666"
> KERNEL"hidraw*", ATTRS{idProduct}"f002", ATTRS{idVendor}"c251", MODE="666"
> KERNEL"hidraw*", ATTRS{idProduct}"2722", ATTRS{idVendor}"c251", MODE="666"
> KERNEL"hidraw*", ATTRS{idProduct}"0204", ATTRS{idVendor}"c251", MODE="666"
> KERNEL"hidraw*", ATTRS{idProduct}"f001", ATTRS{idVendor}"0d28", MODE="666"
> KERNEL"hidraw*", ATTRS{idProduct}"f002", ATTRS{idVendor}"0d28", MODE="666"
> KERNEL"hidraw*", ATTRS{idProduct}"2722", ATTRS{idVendor}"0d28", MODE="666"
> KERNEL"hidraw*", ATTRS{idProduct}"0204", ATTRS{idVendor}"0d28", MODE="666"
> #
> # Make sure that J-Links are not captured by modem manager service
> # as this service would try detect J-Link as a modem and send AT commands via the VCOM component which might not be liked by the target...
> #
> ATTR{idProduct}"1001", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1002", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1003", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1004", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1005", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1006", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1007", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1008", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1009", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"100a", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"100b", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"100c", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"100d", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"100e", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"100f", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1010", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1011", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1012", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1013", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1014", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1015", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1016", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1017", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1018", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1019", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"101a", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"101b", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"101c", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"101d", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"101e", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"101f", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1020", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1021", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1022", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1023", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1024", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1025", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1026", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1027", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1028", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1029", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"102a", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"102b", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"102c", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"102d", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"102e", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"102f", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1050", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1051", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1052", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1053", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1054", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1055", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1056", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1057", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1058", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1059", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"105a", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"105b", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"105c", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"105d", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"105e", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"105f", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1060", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1061", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1062", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1063", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1064", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1065", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1066", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1067", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1068", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"1069", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"106a", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"106b", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"106c", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"106d", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"106e", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"106f", ATTR{idVendor}"1366", ENV{ID_MM_DEVICE_IGNORE}="1"
> #
> # Handle known CMSIS-DAP probes (taken from mbed website and OpenOCD):
> # VID 0xC251 (Keil)
> # PID 0xF001: (LPC-Link-II CMSIS_DAP)
> # PID 0xF002: (OpenSDA CMSIS_DAP Freedom Board)
> # PID 0x2722: (Keil ULINK2 CMSIS-DAP)
> # VID 0x0D28 (mbed)
> # PID 0x0204: MBED CMSIS-DAP
> #
> ATTR{idProduct}"f001", ATTR{idVendor}"c251", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"f002", ATTR{idVendor}"c251", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"2722", ATTR{idVendor}"c251", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"0204", ATTR{idVendor}"c251", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"f001", ATTR{idVendor}"0d28", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"f002", ATTR{idVendor}"0d28", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"2722", ATTR{idVendor}"0d28", ENV{ID_MM_DEVICE_IGNORE}="1"
> ATTR{idProduct}"0204", ATTR{idVendor}"0d28", ENV{ID_MM_DEVICE_IGNORE}="1"
> #
> # Make sure that VCOM ports of J-Links can be opened with user rights
> # We simply say that all devices from SEGGER which are in the "tty" domain are enumerated with normal user  R/W
> #
> SUBSYSTEM"tty", ATTRS{idVendor}"1366", MODE="0666", GROUP="dialout"
> SUBSYSTEM"tty", ATTRS{idVendor}"c251", MODE="0666", GROUP="dialout"
> SUBSYSTEM"tty", ATTRS{idVendor}"0d28", MODE="0666", GROUP="dialout"

Thank you for your help and your time. Just out of curiosity: which line fixed the nrfjprog?