我最近在配备 2 个 Nvidia 1080ti GPU + 1 个英特尔高清显卡的戴尔 Aurora R7 上安装了 ubuntu 14.04 和 ubuntu 16.04。
在 Windows 中，我所有显卡的视频输出均正常工作。请问，我想知道为什么只有 1 个 nvidia GPU 有视频信号？当我将显示端口插入英特尔或第二个 GPU 时，屏幕上没有信号。这适用于 ubuntu 14 和 16。
我更新了这个问题，包括以下命令“lspci”和“xranr”的输出：
$ lspci -nnk | grep -A3 -Fe '[0300]'
01:00.0 VGA compatible controller [0300]: NVIDIA Corporation Device [10de:1b06] (rev a1)
Subsystem: Dell Device [1028:3600]
Kernel driver in use: nvidia
Kernel modules: nvidiafb, nouveau, nvidia_384_drm, nvidia_384
--
02:00.0 VGA compatible controller [0300]: NVIDIA Corporation Device [10de:1b06] (rev a1)
Subsystem: Dell Device [1028:3600]
Kernel driver in use: nvidia
Kernel modules: nvidiafb, nouveau, nvidia_384_drm, nvidia_384
$ xrandr
Screen 0: minimum 8 x 8, current 1680 x 1050, maximum 32767 x 32767
HDMI-0 disconnected (normal left inverted right x axis y axis)
DP-0 disconnected (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
DP-3 disconnected (normal left inverted right x axis y axis)
DP-4 disconnected (normal left inverted right x axis y axis)
DP-5 connected primary 1680x1050+0+0 (normal left inverted right x axis y axis) 433mm x 270mm
1680x1050 59.95*+
1440x900 59.89
1280x1024 75.02 60.02
1280x800 59.81
1280x720 60.00
1152x864 75.00
1024x768 75.03 70.07 60.00
800x600 75.00 72.19 60.32 56.25
640x480 75.00 72.81 59.94
非常感谢您的回答。