Created attachment 165534 [details]
sensors listed under hardware sensors

SUMMARY
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On plasma 5 I was able to use basically all sensors available in lm-sensors under system monitor. However those catagerized as "other" / under Hardware Sensors no longer work in plasma 6. The "sensors" listed under hardware sensors do not actually work and are only a fraction of the available sensors.
***
Steps to reproduce:
- Run lm-sensors to take note of the available sensors
- open system monitor, create a new page and try to add these sensors

Observed result:
Take note that not all sensors are available and that the sensors under "Hardware Sensors" will not report anything.

Expected Result:
All sensors are available and are as functional as the ones in lm-sensors.

Additional Info:

In my desktop cases  specifically, all the sensors on my nct6686-isa-0a20 no longer appear in system monitor.
The same goes for nvme-pci-0d00, nvme-pci-0a00, nvme-pci-0600, k10temp-pci-00c3, and iwlwifi_1-virtual-0 Although I do not know if these ever appeared, as I didn't really use them.

There do appear some hardware sensors in system monitor but these seem to be broken.
Below the full output of lm-sensors:
iwlwifi_1-virtual-0
Adapter: Virtual device
temp1:        +32.0°C  

nvme-pci-0d00
Adapter: PCI adapter
Composite:    +36.9°C  (low  = -40.1°C, high = +83.8°C)
                       (crit = +87.8°C)
Sensor 1:     +56.9°C  (low  = -273.1°C, high = +65261.8°C)
Sensor 2:     +30.9°C  (low  = -273.1°C, high = +65261.8°C)

nvme-pci-0a00
Adapter: PCI adapter
Composite:    +31.9°C  (low  = -273.1°C, high = +89.8°C)
                       (crit = +94.8°C)
Sensor 1:     +31.9°C  (low  = -273.1°C, high = +65261.8°C)
Sensor 2:     +31.9°C  (low  = -273.1°C, high = +65261.8°C)

amdgpu-pci-0300
Adapter: PCI adapter
vddgfx:      705.00 mV 
fan1:           0 RPM  (min =    0 RPM, max = 3300 RPM)
edge:         +48.0°C  (crit = +100.0°C, hyst = -273.1°C)
                       (emerg = +105.0°C)
junction:     +55.0°C  (crit = +110.0°C, hyst = -273.1°C)
                       (emerg = +115.0°C)
mem:          +66.0°C  (crit = +108.0°C, hyst = -273.1°C)
                       (emerg = +113.0°C)
PPT:          28.00 W  (cap = 290.00 W)

nct6686-isa-0a20
Adapter: ISA adapter
+12V:            0.00 V  (min =  +0.00 V, max =  +0.00 V)
+5V:             0.00 V  (min =  +0.00 V, max =  +0.00 V)
+3.3V:           3.42 V  (min =  +3.39 V, max =  +3.42 V)
CPU Soc:         0.00 V  (min =  +0.00 V, max =  +0.00 V)
CPU Vcore:       0.00 V  (min =  +0.00 V, max =  +0.00 V)
CPU 1P8:         0.00 V  (min =  +0.00 V, max =  +0.00 V)
CPU VDDP:        0.00 V  (min =  +0.00 V, max =  +0.00 V)
DRAM:            0.00 V  (min =  +0.00 V, max =  +0.00 V)
Chipset:         0.00 V  (min =  +0.00 V, max =  +0.00 V)
CPU SA:          0.00 V  (min =  +0.00 V, max =  +0.00 V)
Voltage #2:      0.00 V  (min =  +0.00 V, max =  +0.00 V)
AVCC3:           0.00 V  (min =  +0.00 V, max =  +0.00 V)
AVSB:            3.39 V  (min =  +3.39 V, max =  +3.42 V)
VBat:            1.81 V  (min =  +1.81 V, max =  +1.81 V)
CPU Fan:        644 RPM  (min =  643 RPM, max =  731 RPM)
Pump Fan:         0 RPM  (min =    0 RPM, max =    0 RPM)
System Fan #1:    0 RPM  (min =    0 RPM, max =    0 RPM)
System Fan #2:    0 RPM  (min =    0 RPM, max =    0 RPM)
System Fan #3:  747 RPM  (min =  744 RPM, max = 1465 RPM)
System Fan #4:    0 RPM  (min =    0 RPM, max =    0 RPM)
System Fan #5:    0 RPM  (min =    0 RPM, max =    0 RPM)
System Fan #6:    0 RPM  (min =    0 RPM, max =    0 RPM)
CPU:            +15.0°C  (low  = +15.0°C, high = +15.5°C)
System:         +32.0°C  (low  = +32.0°C, high = +33.5°C)
VRM MOS:        +30.0°C  (low  = +29.5°C, high = +32.0°C)
PCH:            +40.0°C  (low  = +37.0°C, high = +64.0°C)
CPU Socket:     +65.0°C  (low  = +57.0°C, high = +71.0°C)
PCIe x1:        +62.0°C  (low  = +62.0°C, high = +62.0°C)
M2_1:           +63.0°C  (low  = +63.0°C, high = +63.0°C)

k10temp-pci-00c3
Adapter: PCI adapter
Tctl:         +40.4°C  
Tccd1:        +32.2°C  

nvme-pci-0600
Adapter: PCI adapter
Composite:    +29.9°C  (low  = -273.1°C, high = +84.8°C)
                       (crit = +84.8°C)
Sensor 1:     +29.9°C  (low  = -273.1°C, high = +65261.8°C)
Sensor 2:     +33.9°C  (low  = -273.1°C, high = +65261.8°C)

amdgpu-pci-0e00
Adapter: PCI adapter
vddgfx:        1.04 V  
vddnb:         1.19 V  
edge:         +32.0°C  
PPT:          20.10 W  


SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 
Kernel: 6.7.3-zen
Distro: Arch linux
KDE Plasma Version:  5.93.0
KDE Frameworks Version:  5.249.0
Qt Version: 6.7.0

Relevant hardware:
Motherboard: B650 live mixer, with an out-of-tree driver for the motherboard sensor.

Reproduction tests:
I also tested this on two tablet pc's one running plasma 6 rc2 and the other running plasma 5.27
There are a lot less sensors available on those, but the gist is the same, sensors under the hardware sensors tabs work on plasma 5.27 but not plasma 6.