Thanks for the reply.
Same story again tonight. The main and guide worked for a short while and then just stopped for no apparent reason.
looks like cameras are still there.
Bob

stellarmate@stellarmate:~ $ lsusb
Bus 004 Device 002: ID 2109:8110 VIA Labs, Inc. Hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 005: ID 04d8:fbb2 Microchip Technology, Inc. GCUSB-nStep stepper motor controller
Bus 003 Device 004: ID 03c3:1f01 ZWO ZWO EFW
Bus 003 Device 003: ID 0403:6001 Future Technology Devices International, Ltd FT232 Serial (UART) IC
Bus 003 Device 002: ID 2109:2811 VIA Labs, Inc. Hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 004: ID 03c3:178a ZWO ASI178MC
Bus 002 Device 003: ID 03c3:183e ZWO ASI183MM Pro
Bus 002 Device 002: ID 2109:8110 VIA Labs, Inc. Hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 04b4:6572 Cypress Semiconductor Corp. Unprogrammed CY7C65642 hub
Bus 001 Device 002: ID 2109:2811 VIA Labs, Inc. Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

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