Lubuntu 18.04.1 LTS xrandr 未检测到第二台显示器

Lubuntu 18.04.1 LTS xrandr 未检测到第二台显示器

我想通过 HDMI 将我的笔记本电脑连接到三星 SyncMasterBX2350(它有 2 个 HDMI 端口)。

这是 xrandr -q 的输出:

Screen 0: minimum 320 x 200, current 1366 x 768, maximum 16384 x 16384
LVDS connected primary 1366x768+0+0 (normal left inverted right x axis y axis) 345mm x 194mm
   1366x768      59.99*+  40.00  
   1280x720      59.97  
   1152x768      59.95  
   1024x768      59.95  
   800x600       59.96  
   848x480       59.94  
   720x480       59.94  
   640x480       59.94  
VGA-0 disconnected (normal left inverted right x axis y axis)
HDMI-0 disconnected (normal left inverted right x axis y axis)

这是 lspic -v 输出的一部分:

00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Trinity [Radeon HD 7420G] (prog-if 00 [VGA controller])
    Subsystem: Hewlett-Packard Company Trinity [Radeon HD 7420G]
    Flags: bus master, fast devsel, latency 0, IRQ 35
    Memory at c0000000 (32-bit, prefetchable) [size=256M]
    I/O ports at 5000 [size=256]
    Memory at d6000000 (32-bit, non-prefetchable) [size=256K]
    [virtual] Expansion ROM at 000c0000 [disabled] [size=128K]
    Capabilities: <access denied>
    Kernel driver in use: radeon
    Kernel modules: radeon

00:01.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Trinity HDMI Audio Controller
    Subsystem: Hewlett-Packard Company ProBook 455 G1 Notebook
    Flags: bus master, fast devsel, latency 0, IRQ 36
    Memory at d6044000 (32-bit, non-prefetchable) [size=16K]
    Capabilities: <access denied>
    Kernel driver in use: snd_hda_intel
    Kernel modules: snd_hda_intel

这段时间我一直在尝试使用 HDMI 1 和 HDMI 2 显示器输入,但一直显示“Signalkabel prufen”,而 HDMI 端口并未连接。我感到很困惑。我做错了什么?是电缆问题、显示器问题还是我的操作系统问题?

答案1

解决:

显示器、PC 或 Arandr 都没有问题,是 HDMI 电缆出了问题。我买了一条新的,一切正常(不过仍然需要使用 arandr 激活显示器)。

相关内容