Ubuntu给外接设备修改分辨率

参考链接 How to Set A Custom Screen Resolution in Ubuntu Desktop

目前正常 dp-1上面有2560x1440 2k的分辨率但是有时候显示不出来,导致不能显示最优的效果

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DP-1 connected 2560x1440+0+0 (normal left inverted right x axis y axis) 597mm x 336mm
2560x1440 59.95 + 74.97*
1920x1080 60.00 50.00 59.94
1920x1080i 60.00 50.00 59.94
1280x1440 59.91
1680x1050 59.88
1280x1024 75.02 60.02
1440x900 59.90
1280x960 60.00
1280x720 60.00 50.00 59.94
1024x768 75.03 70.07 60.00
832x624 74.55
800x600 72.19 75.00 60.32 56.25
720x576 50.00
720x480 60.00 59.94
640x480 75.00 72.81 60.00 59.94
720x400 70.08

cvt 2560 1440 来看分辨率的最优设置

编辑 ~/.profile的文件来实现

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sudo xrandr --newmode "2560x1440_74.97"  118.25  1600 1696 1856 2112  900 903 908 934 -hsync +vsync
sudo xrandr --newmode "2560x1440_60.00" 312.25 2560 2752 3024 3488 1440 1443 1448 1493 -hsync +vsync

sudo xrandr --addmode DP-1 "2560x1440_74.97"

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