我在使用大黄蜂配置双显示器时遇到问题。 Bumblebee 和 nvidia 驱动程序可能已成功安装 - 运行glxgears并optirun glxgears给我完全不同的 fps 并且nvidia-settings看起来正常。此外，将外部显示器连接到 hdmi 并运行后：
export DISPLAY=:8
optirun true
sleep 5
optirun glxgears
glxgears 显示在外部显示器上，所以我认为到目前为止一切正常。
但我不知道如何使 xrandr 发挥作用，例如镜像显示。如果我理解正确的话，使用 bumblebee 会在 上启动第二个 X 服务器:8，因此正在运行两个 X 服务器（主内置显示器打开:0，使用 HDMI 的第二个显示器打开，:8)所以这是问题吗？有没有机会在不同的 X 服务器上有镜像屏幕吗？
我已经尝试了很多教程，但几乎每个教程都有不同的输出使用xrandr（可能是因为 HDMI 没有连接到 nvidia 芯片？）。我的输出是：
$ export DISPLAY=:0
$ xrandr -q
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192
XWAYLAND0 connected 1920x1080+0+0 340mm x 190mm
1920x1080 59.96*+
$ export DISPLAY=:8
$ xrandr -q
Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 16384 x 16384
HDMI-0 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 640mm x 360mm
1920x1080 60.00*+ 59.94 50.00 29.97 25.00 24.00 23.97 60.00 50.04
1360x768 59.80
1280x1024 60.02
1280x720 59.94 50.00
1024x768 60.00
其他人有 HDMI 记录，:0因此他们可以xrandr使用输出目标运行..但是如果我运行例如
$ export DISPLAY=:0
$ xrandr --output XWAYLAND0 --primary
$ xrandr --auto --output HDMI-0 --mode 1920x1080 --right-of XWAYLAND0
我收到预期的错误：warning: output HDMI-0 not found; ignoring
那么主要问题是：如何配置 X 和 bumblebee 具有镜像显示？
当然还有我的配置：
/etc/X11/xorg.conf
$ cat /etc/X11/xorg.conf
Section "Module"
Load "modesetting"
EndSection
Section "Device"
Identifier "nvidia"
Driver "nvidia"
BusID "PCI:1:0:0"
Option "AllowEmptyInitialConfiguration"
EndSection
/etc/bumblebee/bumblebee.conf：
$ cat /etc/bumblebee/bumblebee.conf
# Configuration file for Bumblebee. Values should **not** be put between quotes
## Server options. Any change made in this section will need a server restart
# to take effect.
[bumblebeed]
# The secondary Xorg server DISPLAY number
VirtualDisplay=:8
# Should the unused Xorg server be kept running? Set this to true if waiting
# for X to be ready is too long and don't need power management at all.
KeepUnusedXServer=true
# The name of the Bumbleblee server group name (GID name)
ServerGroup=bumblebee
# Card power state at exit. Set to false if the card shoud be ON when Bumblebee
# server exits.
TurnCardOffAtExit=false
# The default behavior of '-f' option on optirun. If set to "true", '-f' will
# be ignored.
NoEcoModeOverride=false
# The Driver used by Bumblebee server. If this value is not set (or empty),
# auto-detection is performed. The available drivers are nvidia and nouveau
# (See also the driver-specific sections below)
Driver=nvidia
## Client options. Will take effect on the next optirun executed.
[optirun]
# The method used for VirtualGL to transport frames between X servers.
# Possible values are proxy, jpeg, rgb, xv and yuv.
VGLTransport=proxy
# Should the program run under optirun even if Bumblebee server or nvidia card
# is not available?
AllowFallbackToIGC=false
# Driver-specific settings are grouped under [driver-NAME]. The sections are
# parsed if the Driver setting in [bumblebeed] is set to NAME (or if auto-
# detection resolves to NAME).
# PMMethod: method to use for saving power by disabling the nvidia card, valid
# values are: auto - automatically detect which PM method to use
# bbswitch - new in BB 3, recommended if available
# switcheroo - vga_switcheroo method
# none - disable PM completely
# https://github.com/Bumblebee-Project/Bumblebee/wiki/Comparison-of-PM-methods
## Section with nvidia driver specific options, only parsed if Driver=nvidia
[driver-nvidia]
# Module name to load, defaults to Driver if empty or unset
KernelDriver=nvidia
Module=nvidia
PMMethod=auto
# colon-separated path to the nvidia libraries
LibraryPath=/usr/lib64/nvidia-bumblebee:/usr/lib/nvidia-bumblebee:/usr/lib64:/usr/lib
# comma-separated path of the directory containing nvidia_drv.so and the
# default Xorg modules path
XorgModulePath=/usr/lib64/nvidia-bumblebee/xorg,/usr/lib64/xorg/modules
XorgConfFile=/etc/bumblebee/xorg.conf.nvidia
## Section with nouveau driver specific options, only parsed if Driver=nouveau
[driver-nouveau]
KernelDriver=nouveau
PMMethod=auto
XorgConfFile=/etc/bumblebee/xorg.conf.nouveau
/etc/bumblebee/xorg.conf.nvidia
cat /etc/bumblebee/xorg.conf.nvidia
Section "ServerLayout"
Identifier "Layout0"
Option "AutoAddDevices" "true"
Option "AutoAddGPU" "false"
EndSection
Section "Device"
Identifier "DiscreteNvidia"
Driver "nvidia"
VendorName "NVIDIA Corporation"
Option "ProbeAllGpus" "false"
Option "NoLogo" "true"
Option "UseEDID" "true"
#Option "UseDisplayDevice" "none"
EndSection
Section "ServerFlags"
Option "IgnoreABI" "1"
EndSection
/etc/bumblebee/bumblebee-nvidia.conf
$ cat /etc/bumblebee/bumblebee-nvidia.conf
# Configuration file for Bumblebee. Values should **not** be put between quotes
## Server options. Any change made in this section will need a server restart
# to take effect.
[bumblebeed]
# The secondary Xorg server DISPLAY number
VirtualDisplay=:8
# Should the unused Xorg server be kept running? Set this to true if waiting
# for X to be ready is too long and don't need power management at all.
KeepUnusedXServer=true
# The name of the Bumbleblee server group name (GID name)
ServerGroup=bumblebee
# Card power state at exit. Set to false if the card shoud be ON when Bumblebee
# server exits.
TurnCardOffAtExit=false
# The default behavior of '-f' option on optirun. If set to "true", '-f' will
# be ignored.
NoEcoModeOverride=false
# The Driver used by Bumblebee server. If this value is not set (or empty),
# auto-detection is performed. The available drivers are nvidia and nouveau
# (See also the driver-specific sections below)
Driver=nvidia
## Client options. Will take effect on the next optirun executed.
[optirun]
# The method used for VirtualGL to transport frames between X servers.
# Possible values are proxy, jpeg, rgb, xv and yuv.
VGLTransport=proxy
# Should the program run under optirun even if Bumblebee server or nvidia card
# is not available?
AllowFallbackToIGC=false
# Driver-specific settings are grouped under [driver-NAME]. The sections are
# parsed if the Driver setting in [bumblebeed] is set to NAME (or if auto-
# detection resolves to NAME).
# PMMethod: method to use for saving power by disabling the nvidia card, valid
# values are: auto - automatically detect which PM method to use
# bbswitch - new in BB 3, recommended if available
# switcheroo - vga_switcheroo method
# none - disable PM completely
# https://github.com/Bumblebee-Project/Bumblebee/wiki/Comparison-of-PM-methods
## Section with nvidia driver specific options, only parsed if Driver=nvidia
[driver-nvidia]
# Module name to load, defaults to Driver if empty or unset
KernelDriver=nvidia
Module=nvidia
PMMethod=auto
# colon-separated path to the nvidia libraries
LibraryPath=/usr/lib64/nvidia-bumblebee:/usr/lib/nvidia-bumblebee:/usr/lib64:/usr/lib
# comma-separated path of the directory containing nvidia_drv.so and the
# default Xorg modules path
XorgModulePath=/usr/lib64/nvidia-bumblebee/xorg,/usr/lib64/xorg/modules
XorgConfFile=/etc/bumblebee/xorg.conf.nvidia
## Section with nouveau driver specific options, only parsed if Driver=nouveau
[driver-nouveau]
KernelDriver=nouveau
PMMethod=auto
XorgConfFile=/etc/bumblebee/xorg.conf.nouveau