UHK80: disconnecting from time to time on a Mac

General
1

My UHK80 is connected via USB cable (plugged into right half of keyboard) to my Macbook.

Since a few weeks, I see from time to time keyboard not working anymore.

I can solve this with unplug/replug the cable (can be done on both sides: keyboard or Mac).

The keyboard always shows “connected” in display.
UHK agent says “No device connected”.

Zephyr logging said:

  • 2026-01-09 09:10:55 | UHK 80 right | Batteries: 34% 80% (3783 3855)

2026-01-09 09:12:43 | UHK 80 right | Batteries: 34% 80% (3783 3856)

2026-01-09 09:12:56 | UHK 80 right | Batteries: 34% 80% (3785 3856)

2026-01-09 09:13:43 | UHK 80 right | Batteries: 34% 80% (3785 3855)

2026-01-09 09:15:55 | UHK 80 right | Batteries: 34% 80% (3784 3855)
Batteries: 34% 80% (3784 3854)
Conn state: Host0(umbp2, Disconnected), Active
Entered LightSleep power mode
Batteries: 34% 80% (3785 3854)
Batteries: 34% 80% (3785 3854)

2026-01-09 09:15:56 | UHK 80 right | Conn state: Host0(umbp2, Ready)
Conn state: Host0(umbp2, Ready), Active
Entered Awake power mode
Batteries: 34% 80% (3785 3854)
Batteries: 34% 80% (3785 3854)

2026-01-09 09:16:57 | UHK 80 right | Batteries: 34% 80% (3785 3853)

2026-01-09 09:17:57 | UHK 80 right | Batteries: 34% 80% (3785 3851)

Any ideas how to solve that ?

Firmware on keyboard: 16.0.0
Agent version: 9.0.0

Thank you

Uli