显卡驱动作死（续）显卡控制切换脚本化

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通常情况下并不需要独立显卡的性能，只需要有一个集成显卡作为显示输出，同时将独立显卡关闭以省电，但是有时又需要独立显卡的性能来干一些工作，同时自己手动尝试了一下在 nVidia 显卡常开和使用 bumblebee 之间切换是可行的，就将两者之间的切换做成了命令集成，只是很简单的命令集成，没有很高深的脚本化，仅为自用就可以的程度。

准备工作

首先确保直接使用 nVidia 闭源驱动能够正常工作，同时 bumblebee 也是能够正常工作的。

系统版本：

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                  -`                    orange@BiGOranGe 
                 .o+`                   ---------------- 
                `ooo/                   OS: Arch Linux x86_64 
               `+oooo:                  Host: Aspire VN7-591G V1.15 
              `+oooooo:                 Kernel: 5.0.13-arch1-1-ARCH 
              -+oooooo+:                Uptime: 2 hours, 4 mins 
            `/:-:++oooo+:               Packages: 2054 (pacman) 
           `/++++/+++++++:              Shell: zsh 5.7.1 
          `/++++++++++++++:             Resolution: 1920x1080 
         `/+++ooooooooooooo/`           DE: Deepin 
        ./ooosssso++osssssso+`          WM: Mutter(DeepinGala) 
       .oossssso-````/ossssss+`         Theme: Adapta [GTK2/3] 
      -osssssso.      :ssssssso.        Icons: Numix-Circle [GTK2/3] 
     :osssssss/        osssso+++.       Terminal: deepin-terminal 
    /ossssssss/        +ssssooo/-       Terminal Font: Noto Mono for Powerline 12 
  `/ossssso+/:-        -:/+osssso+-     CPU: Intel i5-4210H (4) @ 3.500GHz 
 `+sso+:-`                 `.-/+oso:    GPU: Intel 4th Gen Core Processor 
`++:.                           `-/+/   GPU: NVIDIA GeForce GTX 860M 
.`                                 `/   Memory: 2633MiB / 7898MiB

nVidia 版本：

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Sun May 12 23:14:07 2019       
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 418.74       Driver Version: 418.74       CUDA Version: 10.1     |
|-------------------------------+----------------------+----------------------+
| GPU  Name        Persistence-M| Bus-Id        Disp.A | Volatile Uncorr. ECC |
| Fan  Temp  Perf  Pwr:Usage/Cap|         Memory-Usage | GPU-Util  Compute M. |
|===============================+======================+======================|
|   0  GeForce GTX 860M    Off  | 00000000:01:00.0 Off |                  N/A |
| N/A   49C    P0    N/A /  N/A |      5MiB /  2004MiB |      0%      Default |
+-------------------------------+----------------------+----------------------+
                                                                               
+-----------------------------------------------------------------------------+
| Processes:                                                       GPU Memory |
|  GPU       PID   Type   Process name                             Usage      |
|=============================================================================|
|    0     11362      G   /usr/lib/Xorg                                  4MiB |
+-----------------------------------------------------------------------------+

编写脚本

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nvim /usr/local/bin/nvch.sh
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#/usr/bin/bash
# function:change nvidia driver,bumblebee or use nvidia driver directively
if [[ $1 == "n" ]]  # use nvidia driver
then
	sudo systemctl disable bumblebeed     # 取消 bumblebee 的开机启动
	echo  | yay -Rnsc bumblebee           # 卸载 bumblebee
	echo "Bumblebee was removed"
	sudo cp /etc/X11/xorg.conf.bak /etc/X11/xorg.conf      # 直接使用 nVidia 驱动需要配置 xorg
	echo "xorg.conf was created"
	sudo cp /home/orange/Software/desktop/nvidia-settings-nvidia.desktop /usr/share/applications/nvidia-settings.desktop   # 这里是直接使用 nVidia 时 nvidia-setting 的打开方式
	echo "desktop file created"
	sudo sed -i 's/^VDPAU_DRIVER=va_gl/VDPAU_DRIVER=nvidia/' /etc/environment	# 环境变量设置 vdpau 为 nVidia
	echo "environment VDPAU_DRIVER now is nvidia"
	#sed -i 's/^#hw=vdpau/hw=vdpau/' /home/orange/.config/mpv/mpv.conf    # 设置 mpv 使用 nVidia 显卡硬解码，缓解 CPU 占用率
	#sed -i 's/^#profile=gpu-hq/profile=gpu-hq/' /home/orange/.config/mpv/mpv.conf
	sed -i 's/^#gpu-api=vulkan/gpu-api=vulkan/' /home/orange/.config/mpv/mpv.conf
	sed -i 's/^#vo=vdpau/vo=vdpau/' /home/orange/.config/mpv/mpv.conf
	echo "mpv.conf now is nVidia"
elif [[ $1 == "b" ]]
then 
	echo | yay -S bumblebee primus lib32-primus          # 安装 bumblebee 及 primus
	echo "Bumblebee & primus was installed"
	sudo systemctl enable bumblebeed                     # 开机启动 bumblebee
	echo "Bumblebee.service was enabled"
	sudo mv /etc/X11/xorg.conf /etc/X11/xorg.conf/bak         # bumblebee 会自动管理 xorg，所以将 xorg 配置文件直接备份，以备在切换为直接使用 nVidia 驱动时使用
	echo "xorg.conf was deleted"
	sudo cp /home/orange/Software/desktop/nvidia-settings-bumblebee.desktop /usr/share/applications/nvidia-settings.desktop  # 这里是使用 bumblebee 时 nvidia-setting 的打开方式
	echo "desktop file created"
	sudo sed -i 's/^VDPAU_DRIVER=nvidia/VDPAU_DRIVER=va_gl/g' /etc/environment    # 设置环境变量 vdpau 为 intel 集成显卡	
	echo "environment VDPAU_DRIVER now is #"
	#sed -i 's/^hw=vdpau/#hw=vdpau/' /home/orange/.config/mpv/mpv.conf        # 取消 mpv 用 nVidia 解码的方式，否则 mpv 会无法打开
	#sed -i 's/^profile=gpu-hq/#profile=gpu-hq/' /home/orange/.config/mpv/mpv.conf
	sed -i 's/^gpu-api=vulkan/#gpu-api=vulkan/' /home/orange/.config/mpv/mpv.conf 
	sed -i 's/^vo=vdpau/#vo=vdpau/' /home/orange/.config/mpv/mpv.conf
	echo "mpv.conf now is #"
fi

两个不同的 desktop 文件内容：

nvidia-settings-bumblebee.desktop

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[Desktop Entry]
Type=Application
Encoding=UTF-8
Name=NVIDIA X Server Settings Bumblebee
Comment=Configure NVIDIA X Server Settings
Exec=optirun -b none /usr/bin/nvidia-settings -c :8
Icon=/usr/share/pixmaps/nvidia-settings.png
Categories=__NVIDIA_SETTINGS_DESKTOP_CATEGORIES__

# Translations provided by Sun Microsystems
Name[de]=NVIDIA X-Server-Einstellungen
Name[es]=Valores de configuración del servidor NVIDIA X
Name[fr]=Paramètres du serveur X NVIDIA
Name[it]=NVIDIA X Server Settings
Name[ja]=NVIDIA X サーバー設定
Name[ko]=NVIDIA X 서버 설정
Name[pt_BR]=Configurações do NVIDIA X Server
Name[zh_CN]=NVIDIA X 服务器设置
Name[zh_HK]=NVIDIA X 伺服器設定
Name[zh_TW]=NVIDIA X 伺服器設定
Comment[de]=Konfigurieren der NVIDIA X-Server-Einstellungen
Comment[es]=Establezca los valores de configuración del servidor NVIDIA X
Comment[fr]=Configurer les paramètres du serveur X NVIDIA
Comment[it]=Configura NVIDIA X Server Settings
Comment[ja]=NVIDIA X サーバー設定を構成します
Comment[ko]=NVIDIA X 서버 설정 구성
Comment[pt_BR]=Definir &configurações de gerenciamento de usuário...
Comment[zh_CN]=配置 NVIDIA X 服务器设置
Comment[zh_HK]=配置 NVIDIA X 伺服器設定
Comment[zh_TW]=配置 NVIDIA X 伺服器設定

nvidia-settings-nvidia.desktop

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[Desktop Entry]
Categories=__NVIDIA_SETTINGS_DESKTOP_CATEGORIES__
Comment=Configure NVIDIA X Server Settings
Comment[de]=Konfigurieren der NVIDIA X-Server-Einstellungen
Comment[es]=Establezca los valores de configuración del servidor NVIDIA X
Comment[fr]=Configurer les paramètres du serveur X NVIDIA
Comment[it]=Configura NVIDIA X Server Settings
Comment[ja]=NVIDIA X サーバー設定を構成します
Comment[ko]=NVIDIA X 서버 설정 구성
Comment[pt_BR]=Definir &configurações de gerenciamento de usuário...
Comment[zh_CN]=配置 NVIDIA X 服务器设置
Comment[zh_HK]=配置 NVIDIA X 伺服器設定
Comment[zh_TW]=配置 NVIDIA X 伺服器設定
Encoding=UTF-8
Exec=/usr/bin/nvidia-settings
Icon=/usr/share/pixmaps/nvidia-settings.png
Name=NVIDIA X Server Settings Nvidia
Name[de]=NVIDIA X-Server-Einstellungen
Name[es]=Valores de configuración del servidor NVIDIA X
Name[fr]=Paramètres du serveur X NVIDIA
Name[it]=NVIDIA X Server Settings
Name[ja]=NVIDIA X サーバー設定
Name[ko]=NVIDIA X 서버 설정
Name[pt_BR]=Configurações do NVIDIA X Server
Name[zh_CN]=NVIDIA X 服务器设置
Name[zh_HK]=NVIDIA X 伺服器設定
Name[zh_TW]=NVIDIA X 伺服器設定
Type=Application

赋予脚本可执行权限

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sudo chmod +x /usr/local/bin/nvch.sh

使用方式

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nvch n     # 切换为直接使用 nVidia 闭源驱动的方式
nvch b     # 切换为使用 bumblebee 的省电方式

注意事项

切换显卡驱动方式之后需要重启才能生效

后记

脚本中 mpv 配置那一段是个人需要所配置的，因为 CPU 集显性能在现在看有一点不够用，导致看较大（5GB以上）视频会掉帧，同时整个电脑会卡顿，CPU 被吃满，所以此时需要使用 nVidia 显卡来打开 mpv。在此之前也有尝试过使用 bumblebee 的方式来通过 primusrun 或者 optirun 来给 mpv 加速获取高性能，但因为 mpv 使用的方式无法使用 bumblebee 来资持的，所以就想到了这么一个算是比较难看的办法。