ubuntu添加并设置屏幕分辨率

我想要一个920x1080分辨率，但是Ubuntu的说面设置没有这个分辨率，需要的一些参数都是从上个命令中读取的，本文都用颜色标识了

# 查看当前机器的分辨率信息
$ xrandr
Screen 0: minimum 1 x 1, current 1680 x 1050, maximum 8192 x 8192
Virtual1 connected primary 1680x1050+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
800x600 60.00 + 60.32
2560x1600 59.99
1920x1440 60.00
1856x1392 60.00
1792x1344 60.00
1920x1200 59.88
1600x1200 60.00
1680x1050 59.95*
1400x1050 59.98
1280x1024 60.02
1440x900 59.89
1280x960 60.00
1360x768 60.02
1280x800 59.81
1152x864 75.00
1280x768 59.87
1024x768 60.00
640x480 59.94
Virtual2 disconnected (normal left inverted right x axis y axis)
Virtual3 disconnected (normal left inverted right x axis y axis)
Virtual4 disconnected (normal left inverted right x axis y axis)
Virtual5 disconnected (normal left inverted right x axis y axis)
Virtual6 disconnected (normal left inverted right x axis y axis)
Virtual7 disconnected (normal left inverted right x axis y axis)
Virtual8 disconnected (normal left inverted right x axis y axis)

# 生成分辨率配置参数
$ 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

# 添加一个分辨率
$ xrandr --newmode "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync

# 绑定显示器到分辨率
$ xrandr --addmode Virtual1 "1920x1080_60.00"

# 设置显示器的分辨率
$ xrandr --output Virtual1 --mode "1920x1080_60.00"

这些命令设置完以后，ubuntu重启设置又无效了，可以在/etc/profile中把最后三个命令加进去启动自动执行

xrandr --newmode "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync
xrandr --addmode Virtual1 "1920x1080_60.00"
xrandr --output Virtual1 --mode "1920x1080_60.00"