未检测到 DisplayPort:Ubuntu 16.10 和 Dell Optiplex 3020

未检测到 DisplayPort:Ubuntu 16.10 和 Dell Optiplex 3020

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:

  1. 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。

  2. 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”;

  3. 我还更新了 nvidia 和 intel graphics 的版本;

  4. 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。

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