The kernel log show Chain 1 disconnected.

1. Confirm the hashboard Chain 1 is in good working condition.
2. Check for any loose connections on Chain 1.
3. Swap the cables and insert them into the hashboards to verify the cables are OK.
4. Lastly, inspect the control board.

The kernel log show Chain 2 only 0 asic.

1. Follow the maintenance steps to repair 0 asic issue.
2. Check for any loose connections on Chain 1.
3. Swap the cables and insert them into the hashboards to verify the cables are OK.
4. Lastly, inspect the control board.