我最近在新电脑上安装了 Ubuntu 15.04,并连接了第二台显示器。当我以电脑上创建的第一个用户身份登录时,一切正常,但以其他用户身份登录时,显示器收不到任何信号。
在系统设置中,屏幕被检测到但处于禁用状态。当我尝试启用它时,显示器似乎接收到了信号,但随后它又立即变黑并且不再被检测到。
我查阅了几个类似的帖子,但似乎没有一个与特定帐户相关...我尝试了这个解决方法,但没有奏效(外接显示器被识别但显示“无信号”)。
xrandr 输出:
Screen 0: minimum 8 x 8, current 6736 x 2572, maximum 32767 x 32767
eDP1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 309mm x 173mm
1920x1080 60.1*+ 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
DP1 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis)
HDMI1 disconnected (normal left inverted right x axis y axis)
HDMI2 connected (normal left inverted right x axis y axis)
1920x1080 60.0 + 50.0 59.9
1920x1080i 60.1 50.0 50.0 60.0
1600x1200 60.0
1680x1050 59.9
1280x1024 75.0 60.0
1440x900 75.0 59.9
1280x960 60.0
1152x864 75.0
1280x720 60.0 50.0 59.9
1024x768 75.1 70.1 60.0
832x624 74.6
800x600 72.2 75.0 60.3 56.2
720x576 50.0
720x576i 50.1
720x480 60.0 59.9
720x480i 60.1 60.1
640x480 75.0 72.8 66.7 60.0 59.9
720x400 70.1
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
[编辑] 我刚刚注意到,“当前”显示尺寸非常奇怪。现在它显示“3840 x 1080”,当我尝试激活 HDMI 显示器时,它似乎会发生变化。
答案1
您可以尝试在按字母 P 的同时按下 SUPER 键。
SUPER 按钮是 Windows 键,通常位于 Alt 或空格键旁边。祝你好运。