Xubuntu - 操作系统无法识别第二台显示器 - xrandr addmode 有点用

Xubuntu - 操作系统无法识别第二台显示器 - xrandr addmode 有点用

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

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