Bug 510571

Summary:	system monitor doesn't read NVIDIA sensors from old driver versions that don't support `nvidia-smi`
Product:	[Applications] plasma-systemmonitor	Reporter:	fatihozsoy1
Component:	general	Assignee:	KSysGuard Developers <ksysguard-bugs>
Status:	RESOLVED INTENTIONAL
Severity:	normal	CC:	ahiemstra, kde, nate, plasma-bugs-null
Priority:	NOR
Version First Reported In:	6.4.5
Target Milestone:	---
Platform:	CachyOS
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	nvidia drivers psensor plasma system monitor

Description fatihozsoy1 2025-10-13 18:15:23 UTC

Created attachment 185738 [details]
nvidia drivers

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SUMMARY
system monitor doesnt read the sensor, nvtop and psensor does read it.
i have 2 750M GPUs. drivers installed correctly which is nvidia-470xx and nvidia-settings also sees the GPUs and reads the sensors. system monitor also sees the sensors but doesnt read them.

STEPS TO REPRODUCE
1. 
2. 
3. 

OBSERVED RESULT


EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: 
macOS: 
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: 
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION

Comment 1 fatihozsoy1 2025-10-13 18:17:37 UTC

Created attachment 185739 [details]
psensor

Comment 2 fatihozsoy1 2025-10-13 18:18:03 UTC

Created attachment 185740 [details]
plasma system monitor

Comment 3 David Redondo 2025-10-14 07:30:58 UTC

Please paste a short excerpt of 

nvidia-smi dmon -s pucm

Comment 4 fatihozsoy1 2025-10-14 07:37:21 UTC

❯ nvidia-smi dmon -s pucm
Not supported on the device(s)
Failed to process command line

Comment 5 David Redondo 2025-10-14 07:52:45 UTC

Then that's expected. We rely on nvidia-smi to read statistics. 470 is an old driver as well , current version is 580

Comment 6 fatihozsoy1 2025-10-14 08:01:01 UTC

yes i know, is there a way for me to add lm-sensors? i think old ksysguard had a way to add script/command sensor, is it possible to do that on new one?

Comment 7 David Redondo 2025-10-14 08:37:54 UTC

All lm-sensor sensors should be available under "Hardware Sensors"