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Hardware Sensors on 15000 and 23000 appliances show zero (0) values after completing the Gaia OS First Time Configuration Wizard
Symptoms
  • Gaia Portal - Maintenance section - Hardware Health page shows:

    • all voltages - 0.00 Volt
    • all System Fan units - 0.00 RPM
    • all Power Supply units - Down
    Example:
  • Output of Clish command show sysenv all output on 15000 / 23000 appliance shows the following in the "Value" column:

    • all Voltages - 0.00 Volt
    • all System Fan units - 0.00 RPM
    • all Power Supply units - Down
    Example (output is truncated for brevity):
    Hardware Information
    
    Name        Value       unit          type     
    CPU0 Vcore   0.00         Volt          Voltage        
    CPU0 DDR4-1   0.00         Volt          Voltage        
    CPU0 DDR4-2   0.00         Volt          Voltage        
    VCC 12V      0.00         Volt          Voltage       
    VCC 3V       0.00         Volt          Voltage        
    VCC 5V       0.00         Volt          Voltage        
    3VSB         0.00         Volt          Voltage        
    5VSB         0.00         Volt          Voltage        
    VBAT         0.00         Volt          Voltage        
    CPU0 Temp    0.00         Celsius       Temperature           
    System Intake Temp   0.00         Celsius       Temperature           
    System Outlet Temp   0.00         Celsius       Temperature           
    System Fan 1   0.00         RPM           Fan        
    System Fan 2   0.00         RPM           Fan        
    System Fan 3   0.00         RPM           Fan        
    System Fan 4   0.00         RPM           Fan        
    Power Supply #1   Down         On/Off        Power        
    Power Supply #2   Down         On/Off        Power        
    BIOS         Valid        Valid/Invalid   BIOS     
    
  • Output of Expert command cpstat -f power_supply os on 15000 / 23000 appliance shows that all Power Supply units are "Down":

    Power Supply
    --------------
    |Index|Status|
    --------------
    |  1  | Down |
    |  2  | Down |
    --------------
    
  • Output of Expert command cpstat -f sensors os on 15000 / 23000 appliance shows:

    • all Temperatures - 0 degrees
    • all System Fan units - 0 RPM
    • all Voltages - 0 volts
    Example:
    Temperture Sensors
    -------------------------------------------------
    |Name       |Value|Unit     |Type       |Status |
    -------------------------------------------------
    |CPU1 Temp  |0    |degrees C|Temperature|      0|
    |CPU0 Temp  |0    |degrees C|Temperature|      0|
    |Outlet Temp|0    |degrees C|Temperature|      0|
    |Intake Temp|0    |degrees C|Temperature|      0|
    -------------------------------------------------
    
    Fan Speed Sensors
    -------------------------------------
    |Name        |Value|Unit|Type|Status|
    -------------------------------------
    |System Fan 4|0    |RPM |Fan |     1|
    |System Fan 3|0    |RPM |Fan |     1|
    |System Fan 2|0    |RPM |Fan |     1|
    |System Fan 1|0    |RPM |Fan |     1|
    -------------------------------------
    
    Voltage Sensors
    ----------------------------------------
    |Name       |Value|Unit |Type   |Status|
    ----------------------------------------
    |VBAT       |0    |Volts|Voltage|     1|
    |5VSB       |0    |Volts|Voltage|     1|
    |3VSB       |0    |Volts|Voltage|     1|
    |VCC 5V     |0    |Volts|Voltage|     1|
    |VCC 3V     |0    |Volts|Voltage|     1|
    |VCC 12V    |0    |Volts|Voltage|     1|
    |CPU1 DDR4-2|0    |Volts|Voltage|     1|
    |CPU1 DDR4-1|0    |Volts|Voltage|     1|
    |CPU0 DDR4-2|0    |Volts|Voltage|     1|
    |CPU0 DDR4-1|0    |Volts|Voltage|     1|
    |CPU1 Vcore |0    |Volts|Voltage|     1|
    |CPU0 Vcore |0    |Volts|Voltage|     1|
    ----------------------------------------
    
  • PSU status LED on the front panel on 15000 / 23000 appliance is lit in amber.

  • Alert status LED on the front panel on 15000 / 23000 appliance is blinking red.

  • LOM WebUI - Appliance Health page might show:

    • all Voltages - 0.00 Volt
    • Case fan units - 0 RPM
    • Temperatures - 0 ° C / 85 ° C / 100 ° C
    Example:
  • In some configurations (where one of the Power Supply Units is not plugged to a power outlet), /var/log/messages file repeatedly shows:
    xpand[PID]: [ERR] i2c_smbus_read_byte_data STATUS_WORD 0x2848

  • Reboot resolves the issue only temporarily.

  • The issue occurs after completing the Gaia OS First Time Configuration Wizard.

Cause

Software driver collision causing appliance Hardware Health monitoring to report false zero sensor readings, regardless of actual sensors status.

Note: Symptoms are scoped to Hardware Health monitoring services and have no other effect on appliance functionality.


Solution
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