我在 Dell XPS 15 7590(2019 型号)上安装了 Ubuntu 20.04。虽然在安装 Windows 10 时外接 2560x1440 显示器工作正常,但当我以该分辨率使用时,屏幕检测不到信号。笔记本电脑上检测到了显示器。当我将分辨率降低到 1920x1080 时,显示器就可以正常工作。
该显示器还可以与运行 Ubuntu 20.04 的旧 ThinkPad 配合使用。
xps 配备 Intel UHD Graphics 630 和 Nvidia GTX 1650,并使用 nvidia-driver-470
xrandr 输出,而监视器显示“未检测到信号”
Screen 0: minimum 8 x 8, current 4480 x 1440, maximum 32767 x 32767
eDP-1-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 346mm x 194mm
1920x1080 59.93*+
1680x1050 59.95 59.88
1600x1024 60.17
1400x1050 59.98
1600x900 59.99 59.94 59.95 59.82
1280x1024 60.02
1440x900 59.89
1400x900 59.96 59.88
1280x960 60.00
1440x810 60.00 59.97
1368x768 59.88 59.85
1360x768 59.80 59.96
1280x800 59.99 59.97 59.81 59.91
1152x864 60.00
1280x720 60.00 59.99 59.86 59.74
1024x768 60.04 60.00
960x720 60.00
928x696 60.05
896x672 60.01
1024x576 59.95 59.96 59.90 59.82
960x600 59.93 60.00
960x540 59.96 59.99 59.63 59.82
800x600 60.00 60.32 56.25
840x525 60.01 59.88
864x486 59.92 59.57
800x512 60.17
700x525 59.98
800x450 59.95 59.82
640x512 60.02
720x450 59.89
700x450 59.96 59.88
640x480 60.00 59.94
720x405 59.51 58.99
684x384 59.88 59.85
680x384 59.80 59.96
640x400 59.88 59.98
576x432 60.06
640x360 59.86 59.83 59.84 59.32
512x384 60.00
512x288 60.00 59.92
480x270 59.63 59.82
400x300 60.32 56.34
432x243 59.92 59.57
320x240 60.05
360x202 59.51 59.13
320x180 59.84 59.32
DP-1-1 disconnected (normal left inverted right x axis y axis)
DP-1-2 disconnected (normal left inverted right x axis y axis)
DP-1-3 connected 2560x1440+1920+0 (normal left inverted right x axis y axis) 597mm x 336mm
2560x1440 59.95*+
1920x1080 60.00 50.00 59.94
1920x1080i 60.00 50.00 59.94
1680x1050 59.88
1600x900 60.00
1280x1024 75.02 60.02
1280x800 59.91
1152x864 75.00
1280x720 60.00 50.00 59.94
1024x768 75.03 60.00
832x624 74.55
800x600 75.00 60.32
720x576 50.00
720x480 60.00 59.94
640x480 75.00 60.00 59.94
720x400 70.08
答案1
看起来您的戴尔笔记本电脑的屏幕不支持这种高分辨率,但您的外接显示器支持。
例如,如果您的笔记本电脑有全高清 1920x1080 屏幕,它无法显示 2560x1440 分辨率。这种情况会发生尽管您的笔记本电脑显卡的功能 - 可以做到这一点 - 通过能够在外接显示器上使用此分辨率来证明。
通常,分辨率较高的屏幕可以显示分辨率较低的输入信号,即您可以在全高清显示器(1920x1080)上显示 VGA 信号(640x480)。但不是反过来,即在 VGA 屏幕上显示全高清信号。