我尝试在装有 Ubuntu 16.10 的 Dell OptiPlex 3020 中设置两个显示器,但没有成功。
我的主显示器是 VGA 输出,第二个未检测到的显示器是 DisplayPort。
以下是一些配置细节:
$ uname -a
Linux desa475 4.8.0-34-generic #36-Ubuntu SMP Wed Dec 21 17:24:18 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
$ lsmod | grep 视频
video 40960 2 dell_wmi,i915
$ xrandr -q
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192
VGA-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 477mm x 268mm
1920x1080 60.00*+
1680x1050 59.95
1280x1024 75.02 60.02
1152x864 75.00
1024x768 75.03 60.00
800x600 75.00 60.32
640x480 75.00 59.94
720x400 70.08
DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-1 disconnected (normal left inverted right x axis y axis)
(DP-1始终断开)
$ lspci
00:00.0 Host bridge: Intel Corporation 4th Gen Core Processor DRAM Controller (rev 06)
00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics Controller (rev 06)
00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06)
00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB xHCI (rev 04)
00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #1 (rev d4)
00:1c.3 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #4 (rev d4)
00:1d.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation C220 Series Chipset Family H81 Express LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 04)
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 0c)
$ ll /etc/X11
total 84
drwxr-xr-x 10 root root 4096 out 12 16:30 ./
drwxr-xr-x 142 root root 12288 jan 24 19:38 ../
drwxr-xr-x 2 root root 4096 out 12 16:30 app-defaults/
-rw-r--r-- 1 root root 15 out 12 16:30 default-display-manager
drwxr-xr-x 4 root root 4096 out 12 16:28 fonts/
-rw-r--r-- 1 root root 17394 set 27 14:03 rgb.txt
drwxr-xr-x 2 root root 4096 jan 17 15:07 xinit/
drwxr-xr-x 2 root root 4096 mai 24 2016 xkb/
-rwxr-xr-x 1 root root 709 set 27 14:03 Xreset*
drwxr-xr-x 2 root root 4096 out 12 16:28 Xreset.d/
drwxr-xr-x 2 root root 4096 out 12 16:28 Xresources/
-rwxr-xr-x 1 root root 3730 set 27 14:08 Xsession*
drwxr-xr-x 2 root root 4096 jan 17 17:06 Xsession.d/
-rw-r--r-- 1 root root 265 set 27 14:03 Xsession.options
drwxr-xr-x 2 root root 4096 out 12 16:30 xsm/
关于我的尝试:
首先,我检查了我的硬件:我发现我的 BIOS 版本有点旧(A03),我按照建议升级到了 A14这里之后,BIOS 菜单上出现了一个新的视频选项,我可以在“自动”和“Intel HD 显卡”之间进行选择。但都不起作用。
我也尝试使用 cvt 和 xrandr 添加新模式并强制输出,但我总是收到“xrandr:配置 crtc 1 失败”;
我还更新了 nvidia 和 intel graphics 的版本;
我也仅在 DisplayPort 上测试了一台显示器,但它也不起作用。
我真的不知道问题出在哪里:硬件、驱动程序、配置还是操作系统。
我真的很感激有关此事的任何想法。
更新
我还发现这线程,这有点令人困惑,但在我看来,应该支持板载 VGA 和 DP。
答案1
我一发布问题就找到了解决方案。
我正在使用不受支持的 DP 转 VGA 适配器!
查看戴尔知识库:无法配置双显示器了解更多信息。
最后我将其更改为 DVI,我的显示器也支持该功能,并且它可以立即运行。