Nvidia Optimus lights on/off like a christmas tree, any workaround ?


  1. Posts : 130
    Windows 10 Professional x64
       #1

    Nvidia Optimus lights on/off like a christmas tree, any workaround ?


    Dear forum readers,

    I recently got a new MSI laptop (GP76 10UG). As is now usual with Nvidia-equipped hardware, this thing has Optimus. However, yet again, the dGPU switches on from time to time for no apparent reason. While it's not very often, it's still too much since I'm not using it, and the system should not be using it in my back.

    I thought of deactivating the dGPU in the device manager, but the same happens as with my old computer in such a case, the dGPU remains on at all times. So, bad idea.

    In addition to the random times when some process uses it in my back, the dGPU switches on when :
    - I start the Task Manager
    - I quit the Task Manager
    - Sometimes (but not always) when I visit Settings => System => Display
    - I log in
    - I log out
    - I lock my user session
    - I unlock my user session
    - The screen goes into power saving mode
    - The screen leaves power saving mode

    I want the system to not use the dGPU under any circumstances, unless I authorise it to, and the dGPU to remain off in the meantime. Is it even possible ? I can achieve this on Linux, but never did on Windows.

    Fwiw, my Windows version is 20H2 (19042.867).
      My Computer


  2. Posts : 1,141
    Windows 10
       #2

    I have had few instances of that too . In my case its apparently some of the store apps where I set to run using High Performance GPU do run in background from time to time firing it for a second then immediately dismisses it , mind you browsers that claim to have "Acceleration Features" sometime do manage to access the High Performance GPU directly without a set instruction in NVidia's Control Panel , and sometimes it's one of the NVContainer service instances running in background (responsible for NVidia Control Panel and Experience apps) do that for no explained reason by NVidia .

    I found out if I do use NVSlimmer to setup the driver and use minimal settings such as Driver and Physics and Optimus this kind of cools off but not 100% go .

    Now it is known that there are some rogue apps may lurk and try to abuse your CPU or GPU when you leave it in idle such as "Bitcoin Miners" infections where for that you might need to use Malware Bytes just to make sure you don't have one of those too .

    Now finally if you switch Task Manager to Full Details and make sure you have both GPU and GPU Engine columns enabled and leave it there you may be able to spot what processes manage to fire GPU 1 upon happening in case it is not one of the upper discussed services and try to research the reasons for that .

    If you are not quite a user of the dGPU and use your laptop for business use and the whole idea is trying to save on power then you can turn it off from BIOS if that is the case , you may just want to consult your laptop manual over the option name .

    So bottom line you can cool it down significantly but you can't quite control it .

    Hope this helps you .
    Cheers
      My Computer


 

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