我刚刚购买了一台新的 ProArt 显示器（32 英寸），但不幸的是，我的系统仅提供 2560x1440 分辨率。
我尝试使用 xrandr 添加新的显示，但是，添加后，屏幕不会显示（并最终恢复）。我正在使用 USBC 连接。
使用的命令：
cvt 3840 2160 60
xrandr --newmode "3840x2160_60.00" 712.75 3840 4160 4576 5312 2160 2163 2168 2237 -hsync +vsync
xrandr --addmode DP-4 3840x2160_60.00
则输出xrandr为：
Screen 0: minimum 320 x 200, current 2560 x 1440, maximum 16384 x 16384
eDP-1 connected (normal left inverted right x axis y axis)
2256x1504 60.00 + 48.00
1920x1440 60.00
1856x1392 60.00
1792x1344 60.00
2048x1152 60.00
1920x1200 60.00
1920x1080 60.00
1600x1200 60.00
1680x1050 60.00
1400x1050 60.00
1600x900 60.00
1280x1024 60.00
1400x900 60.00
1280x960 60.00
1440x810 60.00
1368x768 60.00
1280x800 60.00
1280x720 60.00
1024x768 60.00
960x720 60.00
928x696 60.00
896x672 60.00
1024x576 60.00
960x600 60.00
960x540 60.00
800x600 60.00
840x525 60.00
864x486 60.00
700x525 60.00
800x450 60.00
640x512 60.00
700x450 60.00
640x480 60.00
720x405 60.00
684x384 60.00
640x360 60.00
512x384 60.00
512x288 60.00
480x270 60.00
400x300 60.00
432x243 60.00
320x240 60.00
360x202 59.99
320x180 59.99
DP-1 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
DP-3 disconnected (normal left inverted right x axis y axis)
DP-4 connected primary 2560x1440+0+0 (normal left inverted right x axis y axis) 708mm x 399mm
2560x1440 164.85*+ 144.00 120.00 60.00
1920x1080 120.00 119.88 60.00 60.00 50.00 59.94 25.00 24.00 23.98
1280x1440 59.91
1680x1050 59.95
1280x1024 75.02 60.02
1440x900 59.89
1280x960 60.00
1152x864 75.00
1280x720 120.00 119.88 60.00 50.00 59.94
1440x576 50.00
1024x768 75.03 70.07 60.00
1440x480 60.00 59.94
800x600 72.19 75.00 60.32 56.25
720x576 50.00
720x480 60.00 59.94
640x480 75.00 72.81 66.67 60.00 59.94
720x400 70.08
3840x2160_60.00 59.98
对 xrandr 完全不熟悉，所以提前感谢您的帮助！