我有一台运行 Ubuntu 14.04 LTS 的 Dell 3750 Vostro 笔记本电脑,配有 NVIDIA GT 525M 显卡。我最近购买了一台外接显示器,它同时具有 HDMI 和 VGA 输入。VGA 输入工作正常,但 HDMI 显示“未检测到信号”。我很想使用 HDMI 连接这台显示器 - 但我始终无法让它工作。
我已经安装了 Bumblebee,并且还运行了sudo apt-get install nvidia-current
。这些都对 HDMI 输出没有任何影响。我还能尝试其他什么吗?以下是 的输出xrandr
:
Screen 0: minimum 320 x 200, current 1600 x 900, maximum 32767 x 32767
LVDS1 connected primary 1600x900+0+0 (normal left inverted right x axis y axis) 382mm x 214mm
1600x900 60.3*+
1440x900 59.9
1360x768 59.8 60.0
1152x864 60.0
1024x768 60.0
800x600 60.3 56.2
640x480 59.9
VGA1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
我注意到没有 HDMI 条目 - 这可能是问题的一部分吗?感谢您的帮助!:)
答案1
如果您有一台数字电视,请尝试以下操作:断开电视端的数字信号。改为连接显示器。如果此操作有效,则说明您的显示器没有问题。
答案2
尝试进入BIOS并将视频输出仅设置为 nvidia。
这是我的 xrandr,没有连接 HDMI(为了方便阅读,删除了几行)
tilo@T-G73:~$ xrandr
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192
LVDS connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 382mm x 215mm
1920x1080 60.0*+
1680x1050 60.0
...
800x600 60.0
800x480 60.0
640x480 60.0
DFP1 disconnected (normal left inverted right x axis y axis)
CRT2 disconnected (normal left inverted right x axis y axis)
在我连接 HDMI 之后(为了便于阅读,删除了几行)这是一张 ATI 卡
tilo@T-G73:~$ xrandr
Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 8192 x 8192
LVDS connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 382mm x 215mm
1920x1080 60.0*+
1680x1050 60.0
...
800x600 60.0
800x480 60.0
640x480 60.0
DFP1 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 160mm x 90mm
1920x1080 60.0*+ 59.9 60.1 30.0 24.0 60.0 30.0 24.0
1600x1200 60.0
1776x1000 59.9 24.0 60.0 30.0
1680x1050 60.0 30.0 24.0
1400x1050 60.0 30.0 24.0
...
1024x768 75.0 70.1 30.0 24.0 60.0
1152x648 59.9
1024x600 75.0 70.1 30.0 24.0 60.0
800x600 30.0 24.0 72.2 75.0 60.3
800x480 30.0 24.0 72.2 75.0 60.3
720x480 30.0 24.0 60.0 59.9
640x480 30.0 24.0 75.0 72.8 66.6 59.9
CRT2 disconnected (normal left inverted right x axis y axis)
答案3
是的,也许您的 HDMI 端口丢失/损坏或未被 Ubuntu 正确检测到。请查看我的结果:
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 32767 x 32767
LVDS1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 344mm x 194mm
1920x1080 60.0*+ 59.9
1680x1050 60.0 59.9
1600x1024 60.2
1400x1050 60.0
1280x1024 60.0
1440x900 59.9
1280x960 60.0
1360x768 59.8 60.0
1152x864 60.0
1024x768 60.0
800x600 60.3 56.2
640x480 59.9
VGA1 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
DP1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
解决方案:
- 删除
Bumblebee
包然后再次检查。 Bumblebee
通过在 dash 中输入“附加驱动程序”并安装下面列出的另一个驱动程序来删除并安装 Nvidia 驱动程序。- 重新安装 Ubuntu 并检查是否
Bumblebee
安装Nvidia driver
- 或者尝试使用 Live 系统的 HDMI