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My dual boot linux-windows got slow on both operating systems. The GUI components render slow and sluggish.

I've tried everything I know but haven't been able to pinpoint the issue.

  • Malware: I ran kaspersky rescue disk, ClamAV in Linux, rootkit scanner, Malwarebytes in Windows, they all find nothing.
  • Disk: I checked OS SSD performance with crystaldiskinfo/mark, all good
  • GPU: monitoring doesn't show anything extraordinary, Furmark stress test went fine, temperatures are normal.

My system is a laptop, i7 with an Intel HD GPU and NVidia 740m GPU.

The slow GUI rendering for everything is maddening to me and I don't know how to troubleshoot this further. Any suggestions?

sensors

Edit: on inspecting the picture closer, I noticed 'CPU performance limitation reasons'. The reason given is frequency clipped due to external prochot assertion.

So the CPU ís getting too hot but it doesn't stand out because it get's clipped. So why is it getting too hot?

I cleaned the air vent not long ago. Maybe thermal paste needs replacement?

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    Have you checked your CPU fans and temperatures - possible thermal throttling?
    – DavidPostill ♦
    Commented Mar 6, 2022 at 14:26
  • @DavidPostill CPU temps are ok. I added sensor readings for reference.
    – progonkpa
    Commented Mar 6, 2022 at 15:00
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    Your cores appear locked to 800MHz which can be a fault due to platform (not CPU) thermal throttling. As a test you can disable BD PROCHOT using ThrottleStop. Otherwise you might need to remove the battery for a while to try and reset your system firmware, or otherwise look for a firmware upgrade which might fix it. superuser.com/a/1686163/19943
    – Mokubai ♦
    Commented Mar 6, 2022 at 15:15
  • Also check your fans operate correctly and are not blocked. Your system firmware might be detecting some kind of fan or thermal failure and throttling your system as a result.
    – Mokubai ♦
    Commented Mar 6, 2022 at 15:18
  • @Mokubai & DavidPostill, the culprit has been found thanks to your input. I'll roll with that and look where it brings me.
    – progonkpa
    Commented Mar 6, 2022 at 15:21

1 Answer 1

Reset to default
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HWinfo showed the CPUs were locked at 800MHz as pointed out by @DavidPostill and with the advice of @Mokubai on how to deal with PROCHOT (processor hot) issues, in my case, I had to pull the battery from the laptop and the power cable to reset the firmware. I think this resolved it.

Before that, I also did an upgrade of the Intel HD graphics driver.

Oddly, HWinfo still notifies throttling but the core MHz are at 3300 and everything flies again. So happy this got resolved. Thanks guys.

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