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参考了许多大佬的文章，还有gentoo官方的wiki，如果有哪位大佬看到文章里有你的内容，希望别生气哈

全过程root用户或者普通用户sudo，建立在gentoo已经安装完桌面的基础上，我就不讲gentoo整么安装了

gentoo linux安装nvidia（内核开始）：

获取内核源码

emerge --ask sys-kernel/gentoo-sources

eselect kernel listeselect kernel set 1

（可选）安装genkennel配置内核 ##有时候nvidia安装不上和内核配置有关，他需要根据你的内核配置文件来编译模块，所以我用genkernel，会自己陪内核的还是自己来配置内核

emerge --ask sys-kernel/genkernel

cd /usr/src/linux

genkernel all

禁用nouveau

mkdir /etc/modprobe.d/

touch /etc/modprobe.d/blacklist.conf

nano /etc/modprobe.d/blacklist.conf

#加入这些begin

blacklist nouveaublacklist lbm-nouveauoptions nouveau modeset=0

#加入这些end

安装显卡驱动

nano /etc/portage/make.conf

#加入这些beginVIDEO_CARDS="intel i965 iris nvidia" #Intel UHD630和Nvidia双显卡

#加入这些end

emerge -av x11-base/xorg-server x11-apps/xrandr x11-base/xorg-drivers media-libs/mesa x11-drivers/nvidia-drivers

配置nvidia

nano /etc/modules-load.d/nvidia.conf

#加入这些beginnvidia

#加入这些end

systemctl start systemd-modules-load.service

或者

rc-update add modules boot

nano /etc/modprobe.d/nvidia-drm.conf

#加入这些beginoptions nvidia-drm modeset=1

#加入这些end

nano /etc/X11/xorg.conf

##############加入这些begin############################### nvidia-xconfig: X configuration file generated by nvidia-xconfig# nvidia-xconfig: version 440.100

Section "ServerLayout" Identifier "Layout0" Screen 0 "Screen0" Inactive "InactiveDevice1" Option "AllowNVIDIAGPUScreens" "true" Option "AllowPRIMEDisplayOffloadSink" "true"EndSection

Section "Files"EndSection

Section "InputClass" Identifier "libinput pointer catchall" Driver "libinput" MatchIsPointer "on" MatchDevicePath "/dev/input/event*" Option "AccelProfile" "flat" #禁用鼠标加速，玩游戏必备 Option "AccelSpeed" "0"EndSection

Section "InputClass" Identifier "libinput keyboard catchall" Driver "libinput" MatchIsKeyboard "on" MatchDevicePath "/dev/input/event*"EndSection

Section "InputClass" Identifier "libinput touchpad catchall" Driver "libinput" MatchIsTouchpad "on" MatchDevicePath "/dev/input/event*" option "Tapping" "True" option "TappingDrag" "True" option "NaturalScrolling" "True"EndSection

Section "Module" Load "fb" Load "shadow" Load "exa" Load "glamoregl" Load "glx" Load "dri3"EndSection

Section "Monitor" Identifier "Monitor0" VendorName "Unknown" ModelName "Unknown" Option "DPMS"EndSection

Section "Device" Identifier "Device0" Driver "nvidia" VendorName "NVIDIA Corporation" BusID "PCI:1:0:0" Option "Accel" "true" Option "RenderAccel" "true" Option "NoFlip" "false" Option "SWCursor" "false" Option "HWCursor" "true" Option "DamageEvents" "true" Option "ModeDebug" "false" Option "AllowSHMPixmaps" "false" Option "SidebandSocketPath" "/tmp" Option "UseSysmemPixmapAccel" "true" Option "MultisampleCompatibility" "true" Option "AllowEmptyInitialConfiguration" "true" Option "ForceCompositionPipeline" "true" Option "ForceFullCompositionPipeline" "true" #大幅度减少屏幕画面撕裂tearing，类似于垂直同步Vsync Option "AllowIndirectGLXProtocol" "false" Option "TripleBuffer" "true" #开启三重缓冲、并配合CompositionPipeline，能明显提升桌面和3D游戏的流畅度和响应速度，并且浏览器加载页面的速度也明显的感觉快了很多 Option "Stereo" "0" Option "BaseMosaic" "false" Option "MultiGPU" "false" Option "SLI" "false" Option "PrimaryGPU" "yes"EndSection

Section "Device" Identifier "InactiveDevice1" Driver "modesetting" VendorName "Unknown" Option "AccelMethod" "glamor" Option "DRI" "3" Option "TearFree" "true"EndSection

Section "Screen" Identifier "Screen0" Device "Device0" Monitor "Monitor0" DefaultDepth 24 SubSection "Display" Depth 24 EndSubSectionEndSection

Section "Screen" Identifier "Screen1" Device "InactiveDevice1"EndSection

Section "ServerFlags" Option "DontVTSwitch" "True" Option "DontZap" "True"EndSection

#############加入这些end###############

nano /usr/share/sddm/scripts/Xsetup

#加入这些begin

xrandr --setprovideroutputsource modesetting NVIDIA-0 #加入这一行xrandr --auto #加入这一行

#加入这些end

chmod u+s /usr/bin/xinit

修改grub启动参数

nano /etc/default/grub

找到

#GRUB_CMDLINE_LINUX=""

改为

GRUB_CMDLINE_LINUX="nvidia-drm.modeset=1"

然后更新grub引导

grub-mkconfig -o /boot/grub/grub.cfg

#详细的intel&nvidia双显卡****prime****设置可以参照这位大佬的文章——

换intel_GPU就改xorg.conf

把/etc/X11/xorg.conf的内容修改为：

##############################################################Section "ServerLayout" Identifier "layout" Screen 0 "iGPU" Option "AllowNVIDIAGPUScreens"EndSection

Section "Device" Identifier "iGPU" Driver "modesetting" BusID "PCI:0:2:0"EndSection

Section "Screen" Identifier "iGPU" Device "iGPU"EndSection

Section "Device" Identifier "nvidia" Driver "nvidia" BusID "PCI:1:0:0"EndSection###################################################################

安装timshift备份软件

emerge layman

layman -a guru

layman -s guru

nano /etc/portage/package.keywords

#加入这些begin

app-backup/timeshift

#加入这些end

emerge app-backup/timeshift --autounmask-write

etc-update --automode -3

emerge app-backup/timeshift

安装gentoo储存库的steam

nano /etc/portage/make.conf

#加入这些begin

USE=" -gpm " 暂时性的全局use

#加入这些end

emerge sys-libs/ncurses

安装完把

use="-gpm" 去掉

安装 app-eselect/eselect-repository和dev-vcs/git：

emerge --ask --noreplace app-eselect/eselect-repository dev-vcs/git

添加 Steam 存储库：

eselect repository enable steam-overlay

或者layman -a steam-overlay

然后与任一特定的 emaint 同步：

emaint sync -r steam-overlay

或

emerge --sync

或

layman -s steam-overlay

nano /etc/portage/package.accept_keywords/steam

#加入这些begin

*/*::steam-overlay

#加入这些end

nano /etc/portage/package.keywords

#加入这些begin

games-util/game-device-udev-rules

#加入这些end

emerge games-util/steam-launcher games-util/steam-meta --autounmask-write

etc-update --automode -3

emerge games-util/steam-launcher games-util/steam-meta

编译完后重启gentoo steam就可以正常用了