![Xubuntu - 操作系统无法识别第二台显示器 - xrandr addmode 有点用](https://linux22.com/image/951820/Xubuntu%20-%20%E6%93%8D%E4%BD%9C%E7%B3%BB%E7%BB%9F%E6%97%A0%E6%B3%95%E8%AF%86%E5%88%AB%E7%AC%AC%E4%BA%8C%E5%8F%B0%E6%98%BE%E7%A4%BA%E5%99%A8%20-%20xrandr%20addmode%20%E6%9C%89%E7%82%B9%E7%94%A8.png)
Igel H830C 有一个显示端口和一个 DVI-I 端口。我已通过适配器(HDMI 到 DVI-I 和 HDMI 到显示端口)连接了两个显示器。显示器(DELL U2520D)工作正常。但是,当我连接 6.5 英寸 LCD(主板 pcb800099)时,操作系统(Xubbuntu - Ubuntu 22.04.2 LTS)根本无法识别它。我已经在装有 Windows 的 PC/笔记本电脑上检查了两个适配器和 6.5 LCD,它们工作正常。
sudo xrandr
返回:
VGA-1 disconnected (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-1 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
HDMI-2 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 553mm x 311mm
2048x1080 60.00 24.00
1920x1080 60.00* 60.00 50.00 59.94 25.00 24.00 23.98
1920x1080i 60.00 50.00 59.94 50.00
1600x1200 60.00
1600x900 60.00
1280x1024 75.02 60.02
1152x864 75.00
1280x720 60.00 50.00 59.94
1024x768 75.03 60.00
800x600 75.00 60.32
720x576 50.00
720x576i 50.00
720x480 60.00 59.94
720x480i 60.00 59.94
640x480 75.00 60.00 59.94
720x400 70.08
sudo xrandr --listmonitors
返回:
Monitors: 1
0: +HDMI-2 2048/553x1080/311+0+0 HDMI-2
sudo lshw -C video
返回:
*-display
description: VGA compatible controller
product: Atom Processor Z36xxx/Z37xxx Series Graphics & Display
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
logical name: /dev/fb0
version: 0e
width: 32 bits
clock: 33MHz
capabilities: pm msi vga_controller bus_master cap_list rom fb
configuration: depth=32 driver=i915 latency=0 resolution=2048,1080
resources: irq:100 memory:d0000000-d03fffff memory:c0000000-cfffffff ioport:2050(size=8) memory:c0000-dffff
我正在尝试类似的事情:
xrandr --output HDMI-1 --mode 800x600
但得到:
xrandr: cannot find mode "800x600"
然后我尝试:
xrandr --addmode HDMI-1 800x600
令人惊讶的是,它竟然成功了!屏幕显示正常,但分辨率关闭,并且“显示”应用程序仍然无法识别此屏幕。
附加信息:
Linux pc-H830C 5.19.0-38-generic #39~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Fri Mar 17 21:16:15 UTC 2 x86_64 x86_64 x86_64 GNU/Linux