B550M Pro4 - No C-State Information

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   Hey all, 

I am trying to build a home server around a Ryzen 5 Pro 4650G an a AsRock B550M Pro4 motherboard. I am currently running it with Ubuntu 22.04.4 LTS to do some testing, specifically relating to the powerdraw of the system. 

My issue is the following: 

I have noticed that running powertop does not give me any C State information in the `Idle stats` tab. (I can try to upload a screenshot if that is relevant)

I have not seen this behavior on my other Ryzen based system or any screenshot on the web. This is leading me to believe that C-States are not enabled. I have clicked through the BIOS (version B550M Pro4 P2.80) and can't seem to find a relevant setting. The manual does not appear to mention C-States at all.

Does anyone have an idea on how I could further diagnose this or on which setting in the bios I might have overlooked?

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crypticfish Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 29 Apr 2024 Status: Offline Points: 20	Post Options Post Reply Quote crypticfish Report Post Thanks(0) Quote Reply Topic: B550M Pro4 - No C-State Information Posted: 29 Apr 2024 at 4:52am
	Hey all, I am trying to build a home server around a Ryzen 5 Pro 4650G an a AsRock B550M Pro4 motherboard. I am currently running it with Ubuntu 22.04.4 LTS to do some testing, specifically relating to the powerdraw of the system. My issue is the following: I have noticed that running powertop does not give me any C State information in the `Idle stats` tab. (I can try to upload a screenshot if that is relevant) I have not seen this behavior on my other Ryzen based system or any screenshot on the web. This is leading me to believe that C-States are not enabled. I have clicked through the BIOS (version B550M Pro4 P2.80) and can't seem to find a relevant setting. The manual does not appear to mention C-States at all. Does anyone have an idea on how I could further diagnose this or on which setting in the bios I might have overlooked?