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Thread: High CPU usage on xorg with ubuntu 22 systum76 with NVIDIA and external monitors

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    High CPU usage on xorg with ubuntu 22 systum76 with NVIDIA and external monitors

    High CPU usage on xorg with ubuntu 22 with NVIDIA and external monitors
    runnuing ubuntu 22.04 on a System76 Gazelle with
    NVIDIA NVIDIA GeForce GTX 1650
    NVIDIA Driver Version: 510.73.05

    I have two external monitors monitors a

    Code:
    ~$ xrandr
    Screen 0: minimum 320 x 200, current 6000 x 3840, maximum 16384 x 16384
    eDP-1 connected primary 1920x1080+0+2449 (normal left inverted right x axis y axis) 344mm x 194mm
       1920x1080     59.98*+  59.97    59.96    59.93  
       .
       .
       .
    DP-1 disconnected (normal left inverted right x axis y axis)
    HDMI-1 connected 1920x1080+4080+2412 (normal left inverted right x axis y axis) 509mm x 286mm
       1920x1080     60.00*+
       1680x1050     59.88  
       .
       .
       .
    DP-1-0 connected 2160x3840+1920+0 left (normal left inverted right x axis y axis) 527mm x 296mm
       3840x2160     60.00*+  29.98  
       .
       .
       .
    DP-1-1 disconnected (normal left inverted right x axis y axis)
      1920x1080 (0xa0) 148.500MHz +HSync +VSync
            h: width  1920 start 2008 end 2052 total 2200 skew    0 clock  67.50KHz
            v: height 1080 start 1084 end 1089 total 1125           clock  60.00Hz
    .
    .
    .
      640x480 (0x84) 25.175MHz -HSync -VSync
            h: width   640 start  656 end  752 total  800 skew    0 clock  31.47KHz
            v: height  480 start  490 end  492 total  525           clock  59.94Hz
    I'm also showing hidpi-daemon installed I installed the system76 driver support package
    Code:
    sudo ps aux | grep hidpi
    
    
    2798  0.0  0.0 267956 21492 ?        Sl   11:05   0:00 /usr/bin/python3 /usr/lib/hidpi-daemon/hidpi-notification
    2825  0.0  0.1 442868 46680 ?        Sl   11:05   0:00 /usr/bin/python3 /usr/lib/hidpi-daemon/hidpi-daemon
    I've recently read an article https://support.system76.com/article...multi-monitor/ that suggested I should only configure my resolution and monitor setups in the article suggests that I should use the tool "NVIDIA X Server" but the one installed with my most recent driver pack is NVIDIA Server
    Code:
    $ nvidia-settings -v
    
        nvidia-settings:  version 510.47.03
              The NVIDIA Settings tool.
    this version does not contain a menu entry with (X server display configuration) which means I cannot set individual monitor resolutions also the only monitor connected under the driver in the current version is the DELL monitor (DP-1-0 ).

    The question is what's the proper set of demons and Nvidia driver version and resolution configuration method that's recommended to kill the excessive CPU load?
    Last edited by jayventi; June 10th, 2022 at 04:57 AM. Reason: spelling

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