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KIC
Asked: 2020-10-12 23:17:12 +0800 CST

仅将 NVIDIA Hybrid gpu 用于 CUDA，而不用于 KDE Plasma

  • 772

有一个类似的问题，我一直在 askubuntu 上关注这个答案：https ://askubuntu.com/a/1158183/254943 。这个解决方案完全符合我的要求。可悲的是，在最近的更新之后，该解决方案停止工作，Xorg 现在再次使用 nvidia。

  • | NVIDIA-SMI 450.66 驱动程序版本：450.66 CUDA 版本：11.0 |
  • Linux XXX 5.4.0-48-generic #52-Ubuntu SMP Thu Sep 10 10:58:49 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
  • 等离子壳 5.18.5 | Qt：5.12.8 | KDE 框架：5.68.0 | kf5-配置：1.0
$ cat  /usr/share/X11/xorg.conf.d/11-nvidia-prime.conf

# DO NOT EDIT. AUTOMATICALLY GENERATED BY gpu-manager

Section "OutputClass"
    Identifier "Nvidia Prime"
    MatchDriver "nvidia-drm"
    Driver "nvidia"
    Option "AllowEmptyInitialConfiguration"
    Option "IgnoreDisplayDevices" "CRT"
    # Option "PrimaryGPU" "Yes"   <<< commented out
    ModulePath "/x86_64-linux-gnu/nvidia/xorg"
EndSection


# added 
Section "OutputClass"
    Identifier "intel"
    MatchDriver "i915"
    Driver "modesetting"
    Option "PrimaryGPU" "yes"    
EndSection

我试图自己调试它，但我无法修复它。

$ nvidia-smi  # shows running process /usr/lib/xorg/Xorg

+-----------------------------------------------------------------------------+
| NVIDIA-SMI 450.66       Driver Version: 450.66       CUDA Version: 11.0     |
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|                               |                      |               MIG M. |
|===============================+======================+======================|
|   0  GeForce GTX 105...  Off  | 00000000:01:00.0 Off |                  N/A |
| N/A   50C    P8    N/A /  N/A |      6MiB /  4040MiB |      0%      Default |
|                               |                      |                  N/A |
+-------------------------------+----------------------+----------------------+
                                                                               
+-----------------------------------------------------------------------------+
| Processes:                                                                  |
|  GPU   GI   CI        PID   Type   Process name                  GPU Memory |
|        ID   ID                                                   Usage      |
|=============================================================================|
|    0   N/A  N/A      1257      G   /usr/lib/xorg/Xorg                  4MiB |
+-----------------------------------------------------------------------------+
xorg nvidia cuda nvidia-prime

1 个回答

  1. Best Answer

    我想已经想通了。首先，我重新移动了 10-nvidia.conf 文件。相反，我添加了一个 10-intel.conf。然后我把 11-nvidia-prime.conf 的每一行都注释掉了，它基本上是一个空文件。由于此文件在 xserver 的每次启动/停止时都会创建/覆盖，因此需要使用chattr +i

    $ pwd
/usr/share/X11

$ ls -l xorg.conf.d/
total 36K
drwxr-xr-x 2 root root 4.0K Okt 20 20:15 .
drwxr-xr-x 6 root root 4.0K Okt 20 18:12 ..
-rw-r--r-- 1 root root   92 Okt 22  2019 10-amdgpu.conf
-rw-r--r-- 1 root root  327 Okt 20 18:10 10-intel-only.conf
-rw-r--r-- 1 root root 1.4K Sep  4 15:34 10-quirks.conf
-rw-r--r-- 1 root root   92 Okt 22  2019 10-radeon.conf
-rw-r--r-- 1 root root  341 Okt 20 20:15 11-nvidia-prime.conf
-rw-r--r-- 1 root root 1.5K Mai 30 15:34 40-libinput.conf
-rw-r--r-- 1 root root 3.4K Mär 11  2020 70-wacom.conf

ls -l bak.xorg/
drwxr-xr-x 2 root root 4.0K Okt 20 20:08 .
drwxr-xr-x 6 root root 4.0K Okt 20 18:12 ..
-rw-r--r-- 1 root root  206 Okt  5 11:19 10-nvidia.conf
-rw-r--r-- 1 root root  333 Okt 20 20:08 11-nvidia-prime.conf

$ cat xorg.conf.d/10-intel-only.conf 
Section "ServerLayout"
    Identifier "Layout0"
    Option "AutoAddGPU" "false"
    Screen 0 "IntelScreen"
EndSection

Section "Device"
    Identifier "IntelDevice"
    BusID "PCI:0:2:0"
    Driver "intel" # or maybe "modesetting"?
EndSection

Section "Screen"
    Identifier "IntelScreen"
    Device "IntelDevice"
EndSection

    在此处输入图像描述

    • 1

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