Chirpstack 4 - fail to get device lock on downlink to device

ChirpStack (v4)
1

I’m in the process of setting up a new Chirpstack 4 instance. All seems to work fine except when sending a downlink command to my device.

in my journalctl I’m getting the following error

Mar 31 21:54:00 Chirpstack4 chirpstack[1391]: 2023-03-31T21:54:00.578222Z  INFO chirpstack::storage::device: Aquiring device lock dev_eui=691fc751b61263eb
Mar 31 21:54:00 Chirpstack4 chirpstack[1391]: 2023-03-31T21:54:00.583667Z  INFO chirpstack::storage::device_queue: Device queue-item updated id=7f2676e2-9953-408a-a4a7-e898199119e9 dev_eui=691fc751b61263eb
Mar 31 21:54:00 Chirpstack4 chirpstack[1391]: 2023-03-31T21:54:00.584647Z  INFO chirpstack::storage::downlink_frame: Downlink-frame saved downlink_id=1969184880
Mar 31 21:54:00 Chirpstack4 chirpstack[1391]: 2023-03-31T21:54:00.584740Z  INFO chirpstack::gateway::backend::mqtt: Sending downlink frame gateway_id=24e124fffef24129 topic=gateway/24e124fffef24129/command/down json=true
Mar 31 21:54:02 Chirpstack4 chirpstack[1391]: 2023-03-31T21:54:02.597274Z  INFO chirpstack::storage::device: Aquiring device lock dev_eui=691fc751b61263eb
Mar 31 21:54:02 Chirpstack4 chirpstack[1391]: 2023-03-31T21:54:02.597502Z ERROR chirpstack::downlink::scheduler: Schedule next queue-item for device failed error=Get device lock
2

Did you find a solution to this? Having the exact same problem with one of my devices.

3

No, i haven’t been able to sort out what is wrong in my config. I’m Seychellois at V3.5 until I do. Any progress you make please let the group know.

4

Have you tried to reboot a node to force a re-join?

5

I managed to fix my problem by deleting and re-adding the device. Still unsure what happened though.
What exactly does the error “Get Device Lock” actually mean? I can’t find any specifics.

Do you get this error for all your nodes?

6

I’ve tried a number of rebooting and recreating the devices but still have the same issue. At one point it looked like it was getting device lock but the “Is Pending” remained at false and never goes to true thus still did not transmit the downlink.

Are there any examples of a US915 full config anywhere? All of the examples given are either segments of a full config and/or EU868 frequencies …

7
8

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