在装有 Ubuntu 14.04 的联想笔记本电脑上,我无法在与 HDMI 连接的显示器上显示当前屏幕的内容。HDMI 电缆同时插入笔记本电脑和显示器,然后显示器打开。
即将
Systems Settings -> Displays
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并单击“检测显示器”仅显示标准笔记本电脑屏幕。未显示外接显示器。
如何解决此问题以便在笔记本电脑屏幕和显示器屏幕上都看到当前屏幕?
此外,屏幕是否可以播放笔记本电脑的声音并不重要。我只希望在外部显示器上显示可见屏幕输出,这在使用 Windows 操作系统启动笔记本电脑时工作正常(无需对硬件和/或电缆进行任何更改)...
附加信息:
xrandr
只显示标准显示器;的完整输出xrandr
是
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1600 x 900, current 1600 x 900, maximum 1600 x 900
default connected primary 1600x900+0+0 0mm x 0mm
1600x900 77.0*
Run Code Online (Sandbox Code Playgroud)使用 Windows(双启动)运行笔记本电脑时,HDMI 连接完美无缺
行的输出lspci
:
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09) (prog-if 00 [VGA controller])
Subsystem: Lenovo Device 3977
Flags: bus master, fast devsel, latency 0, IRQ 7
Memory at c0000000 (64-bit, non-prefetchable) [size=4M]
Memory at b0000000 (64-bit, prefetchable) [size=256M]
I/O ports at 3000 [size=64]
Expansion ROM at <unassigned> [disabled]
Capabilities: <access denied>
Run Code Online (Sandbox Code Playgroud)的输出sudo lshw -C display
:
*-display UNCLAIMED
description: VGA compatible controller
product: 3rd Gen Core processor Graphics Controller
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 09
width: 64 bits
clock: 33MHz
capabilities: msi pm vga_controller bus_master cap_list
configuration: latency=0
resources: memory:c0000000-c03fffff memory:b0000000-bfffffff ioport:3000(size=64)
Run Code Online (Sandbox Code Playgroud)我还尝试删除并重新安装该软件包xserver-xorg-video-intel
- 但它没有改变任何东西(重新启动后)。
我按照此处给出的步骤操作了分辨率为 1920 x 1080 像素的三星 LS22B150NS 显示器。但我有一个错误xrandr: cannot find output "VGA1"
:
alex:~$ cvt 1920 1080
# 1920x1080 59.96 Hz (CVT 2.07M9) hsync: 67.16 kHz; pclk: 173.00 MHz
Modeline "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync
alex:~$ xrandr --newmode "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync
xrandr: Failed to get size of gamma for output default
alex:~$ xrandr --addmode VGA1 1920x1080_60.00
xrandr: Failed to get size of gamma for output default
xrandr: cannot find output "VGA1"
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