NVIDIA/Intel双GPU（prime-select intel）下OpenGL renderer显示N/A求助

Let's walk through the fixes to get your OpenGL renderer working properly with the modesetting driver (the correct choice for your Kabylake Intel UHD 620):

• Verify Core Dependencies Are Installed
  First, make sure you have all the required Mesa packages for hardware-accelerated OpenGL:

  sudo apt update && sudo apt install mesa-utils libgl1-mesa-glx libgl1-mesa-dri
  

  The mesa-utils package gives you tools like glxinfo to check your OpenGL status later.

• Configure Modesetting with Glamor Acceleration
  Kabylake GPUs rely on the glamor acceleration backend for proper OpenGL support with modesetting. Create a dedicated Xorg config file to enforce this:

  1. Create the config directory if it doesn't exist:

     sudo mkdir -p /etc/X11/xorg.conf.d
     

  2. Create the config file 20-intel.conf:

     sudo nano /etc/X11/xorg.conf.d/20-intel.conf
     

  3. Paste the following content:

     Section "Device"
         Identifier "Intel Graphics"
         Driver "modesetting"
         Option "AccelMethod" "glamor"
         Option "DRI" "3"  # Enables DRI3, which improves performance
     EndSection
     

  4. Save and exit (Ctrl+O, Enter, Ctrl+X in nano).

• Confirm Prime Select is Set to Intel
  Double-check that you're actually using the Intel GPU:

  prime-select query
  

  If it doesn't return intel, switch with:

  sudo prime-select intel
  

• Restart Your System
  For the changes to take effect, reboot your machine:

  sudo reboot
  

• Verify OpenGL is Working
  After rebooting, run this command to check your OpenGL renderer:

  glxinfo | grep "OpenGL renderer"
  

  You should see output like:

  OpenGL renderer string: Mesa Intel(R) UHD Graphics 620 (KBL GT2)

Key Notes to Remember #

• Do NOT install xserver-xorg-video-intel-hwe: As you noted, modesetting is the official recommended driver for Kabylake and newer Intel GPUs. The legacy intel driver causes more issues than it solves here.
• If you're on an older Ubuntu release (pre-20.04), consider upgrading your Mesa packages or the OS itself—newer Mesa versions have better support for Kabylake hardware.

内容的提问来源于stack exchange，提问作者siebenheaven