HA OS 15 and Z2M

Searched, but nobody seems to have encountered this issue (yet). Upgraded last night to HA OS 15. Shortly after my Z2M devices became unresponsive and then greyed out. Z2M log shows:

[22:41:30] INFO: e[32mPreparing to start...e[0m
[22:41:30] INFO: e[32mSocat not enablede[0m
[22:41:30] INFO: e[32mStarting Zigbee2MQTT...e[0m
Starting Zigbee2MQTT without watchdog.
[2025-03-17 22:41:51] e[31merrore[39m: 	z2m: Error while starting zigbee-herdsman
[2025-03-17 22:41:51] e[31merrore[39m: 	z2m: Failed to start zigbee-herdsman
[2025-03-17 22:41:51] e[31merrore[39m: 	z2m: Check https://www.zigbee2mqtt.io/guide/installation/20_zigbee2mqtt-fails-to-start_crashes-runtime.html for possible solutions
[2025-03-17 22:41:51] e[31merrore[39m: 	z2m: Exiting...
[2025-03-17 22:41:51] e[31merrore[39m: 	z2m: Error: Failed to connect to the adapter (Error: SRSP - SYS - ping after 6000ms)
    at ZStackAdapter.start (/app/node_modules/.pnpm/[email protected]/node_modules/zigbee-herdsman/src/adapter/z-stack/adapter/zStackAdapter.ts:113:27)
    at Controller.start (/app/node_modules/.pnpm/[email protected]/node_modules/zigbee-herdsman/src/controller/controller.ts:136:29)
    at Zigbee.start (/app/lib/zigbee.ts:69:27)
    at Controller.start (/app/lib/controller.ts:142:13)
    at start (/app/index.js:161:5)

Several add-on restarts and several reboots didn’t help. Downgraded OS to 14.2 and suddenly everything works perfect again. Z2M 2.1.3. Anyone else? Suggestions? Thanks!

Z2M cannot reach your coordinator. Check that something else isn’t using it (ZHA?), that the provided port is correct (use serial/by-id/) or that it is online if connected over the network.

Well, I was wondering more about the possible causes and the connection to the OS version, this being the only thing that changed.

If you don(t use dev/serial/by-id/… , USB ports can change after a reboot

I suppose that would make sense. Will check later. Thanks.