Centos 7自定义屏幕分辨率

$ xrandr
Screen 0: minimum 1 x 1, current 1680 x 900, maximum 8192 x 8192
Virtual1 connected primary 1680x900+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

$ cvt 1920 960 60
# 1920x960 59.99 Hz (CVT) hsync: 59.75 kHz; pclk: 152.00 MHz
Modeline "1920x960_60.00" 152.00 1920 2032 2232 2544 960 963 973 996 -hsync +vsync

$ xrandr --newmode "1920x960_60.00"  152.00  1920 2032 2232 2544  960 963 973 996 -hsync +vsync

$ xrandr --addmode Virtual1 1920x960_60.00

$ xrandr --output Virtual1 --mode 1920x960_60.00