我有一台戴尔纬度e6420配备独立 Nvidia NVS 4200m 显卡以及英特尔高清3000。
在家时，我使用连接到另一台显示器的扩展坞。我曾经通过 DVI 将显示器连接到扩展坞，效果非常好。但由于我最近买了一台新显示器（戴尔 P2418D）的分辨率对于 DVI 来说太高，我尝试通过 Displayport 将其连接到扩展坞。
在 Windows 10 下使用新显示器（通过 Displayport 连接到扩展坞）时（我有 Manjaro/Windows 双启动系统），它工作正常。但是，如果我尝试在Linux下使用它，它可以被识别xrandr，但显示器无法识别任何输入信号：
Screen 0: minimum 320 x 200, current 2560 x 1440, maximum 8192 x 8192
LVDS-1 connected primary 1600x900+0+0 (normal left inverted right x axis y axis) 310mm x 174mm
1600x900 60.06*+ 59.99 59.94 59.95 59.82 40.32
1400x900 59.96 59.88
1440x810 60.00 59.97
1368x768 59.88 59.85
1280x800 59.99 59.97 59.81 59.91
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
700x525 59.98
800x450 59.95 59.82
640x512 60.02
700x450 59.96 59.88
640x480 60.00 59.94
720x405 59.51 58.99
684x384 59.88 59.85
640x400 59.88 59.98
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
VGA-1 disconnected (normal left inverted right x axis y axis)
LVDS-1-2 disconnected (normal left inverted right x axis y axis)
VGA-1-2 disconnected (normal left inverted right x axis y axis)
HDMI-1-1 disconnected (normal left inverted right x axis y axis)
DP-1-1 connected 2560x1440+0+0 (normal left inverted right x axis y axis) 526mm x 296mm
2560x1440 59.95*+
1920x1440 60.00
1856x1392 60.01
1792x1344 75.00 60.01
2048x1152 59.90 59.91
1920x1200 59.88 59.95
2048x1080 60.00 24.00
1920x1080 59.97 59.96 60.00 50.00 59.94 59.93 24.00 23.98
1920x1080i 60.00 50.00 59.94
1600x1200 75.00 70.00 65.00 60.00
1680x1050 59.95 59.88
1400x1050 74.76 59.98
1600x900 59.99 59.94 59.95 59.82
1280x1024 75.02 60.02
1400x900 59.96 59.88
1280x960 60.00
1440x810 60.00 59.97
1368x768 59.88 59.85
1280x800 59.99 59.97 59.81 59.91
1152x864 75.00
1280x720 60.00 59.99 59.86 60.00 50.00 59.94 59.74
1024x768 75.05 60.04 75.03 70.07 60.00
960x720 75.00 60.00
928x696 75.00 60.05
896x672 75.05 60.01
1024x576 59.95 59.96 59.90 59.82
960x600 59.93 60.00
832x624 74.55
960x540 59.96 59.99 59.63 59.82
800x600 75.00 70.00 65.00 60.00 72.19 75.00 60.32 56.25
840x525 60.01 59.88
864x486 59.92 59.57
720x576 50.00
720x576i 50.00
700x525 74.76 59.98
800x450 59.95 59.82
720x480 60.00 59.94
720x480i 60.00 59.94
640x512 75.02 60.02
700x450 59.96 59.88
640x480 60.00 75.00 72.81 75.00 60.00 59.94
720x405 59.51 58.99
720x400 70.08
684x384 59.88 59.85
640x400 59.88 59.98
576x432 75.00
640x360 59.86 59.83 59.84 59.32
512x384 75.03 70.07 60.00
512x288 60.00 59.92
416x312 74.66
480x270 59.63 59.82
400x300 72.19 75.12 60.32 56.34
432x243 59.92 59.57
320x240 72.81 75.00 60.05
360x202 59.51 59.13
320x180 59.84 59.32
DP-1-2 disconnected (normal left inverted right x axis y axis)
1600x900 (0x45) 246.000MHz -HSync +VSync DoubleScan
h: width 1600 start 1728 end 1900 total 2200 skew 0 clock 111.82KHz
v: height 900 start 901 end 904 total 932 clock 59.99Hz
1600x900 (0x46) 186.500MHz +HSync -VSync DoubleScan
h: width 1600 start 1624 end 1640 total 1680 skew 0 clock 111.01KHz
v: height 900 start 901 end 904 total 926 clock 59.94Hz
1600x900 (0x47) 118.250MHz -HSync +VSync
h: width 1600 start 1696 end 1856 total 2112 skew 0 clock 55.99KHz
v: height 900 start 903 end 908 total 934 clock 59.95Hz
1600x900 (0x48) 97.500MHz +HSync -VSync
h: width 1600 start 1648 end 1680 total 1760 skew 0 clock 55.40KHz
v: height 900 start 903 end 908 total 926 clock 59.82Hz
1400x900 (0x4a) 103.500MHz -HSync +VSync
h: width 1400 start 1480 end 1624 total 1848 skew 0 clock 56.01KHz
v: height 900 start 903 end 913 total 934 clock 59.96Hz
1400x900 (0x4b) 86.500MHz +HSync -VSync
h: width 1400 start 1448 end 1480 total 1560 skew 0 clock 55.45KHz
v: height 900 start 903 end 913 total 926 clock 59.88Hz
1440x810 (0x4c) 198.125MHz -HSync +VSync DoubleScan
h: width 1440 start 1548 end 1704 total 1968 skew 0 clock 100.67KHz
v: height 810 start 811 end 814 total 839 clock 60.00Hz
1440x810 (0x4d) 151.875MHz +HSync -VSync DoubleScan
h: width 1440 start 1464 end 1480 total 1520 skew 0 clock 99.92KHz
v: height 810 start 811 end 814 total 833 clock 59.97Hz
1368x768 (0x4e) 85.250MHz -HSync +VSync
h: width 1368 start 1440 end 1576 total 1784 skew 0 clock 47.79KHz
v: height 768 start 771 end 781 total 798 clock 59.88Hz
1368x768 (0x4f) 72.250MHz +HSync -VSync
h: width 1368 start 1416 end 1448 total 1528 skew 0 clock 47.28KHz
v: height 768 start 771 end 781 total 790 clock 59.85Hz
1280x800 (0x50) 174.250MHz -HSync +VSync DoubleScan
h: width 1280 start 1380 end 1516 total 1752 skew 0 clock 99.46KHz
v: height 800 start 801 end 804 total 829 clock 59.99Hz
1280x800 (0x51) 134.250MHz +HSync -VSync DoubleScan
h: width 1280 start 1304 end 1320 total 1360 skew 0 clock 98.71KHz
v: height 800 start 801 end 804 total 823 clock 59.97Hz
1280x800 (0x52) 83.500MHz -HSync +VSync
h: width 1280 start 1352 end 1480 total 1680 skew 0 clock 49.70KHz
v: height 800 start 803 end 809 total 831 clock 59.81Hz
1280x800 (0x53) 71.000MHz +HSync -VSync
h: width 1280 start 1328 end 1360 total 1440 skew 0 clock 49.31KHz
v: height 800 start 803 end 809 total 823 clock 59.91Hz
1280x720 (0x54) 156.125MHz -HSync +VSync DoubleScan
h: width 1280 start 1376 end 1512 total 1744 skew 0 clock 89.52KHz
v: height 720 start 721 end 724 total 746 clock 60.00Hz
1280x720 (0x55) 120.750MHz +HSync -VSync DoubleScan
h: width 1280 start 1304 end 1320 total 1360 skew 0 clock 88.79KHz
v: height 720 start 721 end 724 total 740 clock 59.99Hz
1280x720 (0x56) 74.500MHz -HSync +VSync
h: width 1280 start 1344 end 1472 total 1664 skew 0 clock 44.77KHz
v: height 720 start 723 end 728 total 748 clock 59.86Hz
1280x720 (0x57) 63.750MHz +HSync -VSync
h: width 1280 start 1328 end 1360 total 1440 skew 0 clock 44.27KHz
v: height 720 start 723 end 728 total 741 clock 59.74Hz
1024x768 (0x58) 133.475MHz -HSync +VSync DoubleScan
h: width 1024 start 1100 end 1212 total 1400 skew 0 clock 95.34KHz
v: height 768 start 768 end 770 total 794 clock 60.04Hz
1024x768 (0x59) 65.000MHz -HSync -VSync
h: width 1024 start 1048 end 1184 total 1344 skew 0 clock 48.36KHz
v: height 768 start 771 end 777 total 806 clock 60.00Hz
960x720 (0x5a) 117.000MHz -HSync +VSync DoubleScan
h: width 960 start 1024 end 1128 total 1300 skew 0 clock 90.00KHz
v: height 720 start 720 end 722 total 750 clock 60.00Hz
928x696 (0x5b) 109.150MHz -HSync +VSync DoubleScan
h: width 928 start 976 end 1088 total 1264 skew 0 clock 86.35KHz
v: height 696 start 696 end 698 total 719 clock 60.05Hz
896x672 (0x5c) 102.400MHz -HSync +VSync DoubleScan
h: width 896 start 960 end 1060 total 1224 skew 0 clock 83.66KHz
v: height 672 start 672 end 674 total 697 clock 60.01Hz
1024x576 (0x5d) 98.500MHz -HSync +VSync DoubleScan
h: width 1024 start 1092 end 1200 total 1376 skew 0 clock 71.58KHz
v: height 576 start 577 end 580 total 597 clock 59.95Hz
1024x576 (0x5e) 78.375MHz +HSync -VSync DoubleScan
h: width 1024 start 1048 end 1064 total 1104 skew 0 clock 70.99KHz
v: height 576 start 577 end 580 total 592 clock 59.96Hz
1024x576 (0x5f) 46.500MHz -HSync +VSync
h: width 1024 start 1064 end 1160 total 1296 skew 0 clock 35.88KHz
v: height 576 start 579 end 584 total 599 clock 59.90Hz
1024x576 (0x60) 42.000MHz +HSync -VSync
h: width 1024 start 1072 end 1104 total 1184 skew 0 clock 35.47KHz
v: height 576 start 579 end 584 total 593 clock 59.82Hz
960x600 (0x61) 96.625MHz -HSync +VSync DoubleScan
h: width 960 start 1028 end 1128 total 1296 skew 0 clock 74.56KHz
v: height 600 start 601 end 604 total 622 clock 59.93Hz
960x600 (0x62) 77.000MHz +HSync -VSync DoubleScan
h: width 960 start 984 end 1000 total 1040 skew 0 clock 74.04KHz
v: height 600 start 601 end 604 total 617 clock 60.00Hz
960x540 (0x63) 86.500MHz -HSync +VSync DoubleScan
h: width 960 start 1024 end 1124 total 1288 skew 0 clock 67.16KHz
v: height 540 start 541 end 544 total 560 clock 59.96Hz
960x540 (0x64) 69.250MHz +HSync -VSync DoubleScan
h: width 960 start 984 end 1000 total 1040 skew 0 clock 66.59KHz
v: height 540 start 541 end 544 total 555 clock 59.99Hz
960x540 (0x65) 40.750MHz -HSync +VSync
h: width 960 start 992 end 1088 total 1216 skew 0 clock 33.51KHz
v: height 540 start 543 end 548 total 562 clock 59.63Hz
960x540 (0x66) 37.250MHz +HSync -VSync
h: width 960 start 1008 end 1040 total 1120 skew 0 clock 33.26KHz
v: heigTht 540 start 543 end 548 total 556 clock 59.82Hz
800x600 (0x67) 81.000MHz +HSync +VSync DoubleScan
h: width 800 start 832 end 928 total 1080 skew 0 clock 75.00KHz
v: height 600 start 600 end 602 total 625 clock 60.00Hz
800x600 (0x68) 40.000MHz +HSync +VSync
h: width 800 start 840 end 968 total 1056 skew 0 clock 37.88KHz
v: height 600 start 601 end 605 total 628 clock 60.32Hz
800x600 (0x69) 36.000MHz +HSync +VSync
h: width 800 start 824 end 896 total 1024 skew 0 clock 35.16KHz
v: height 600 start 601 end 603 total 625 clock 56.25Hz
840x525 (0x6a) 73.125MHz -HSync +VSync DoubleScan
h: width 840 start 892 end 980 total 1120 skew 0 clock 65.29KHz
v: height 525 start 526 end 529 total 544 clock 60.01Hz
840x525 (0x6b) 59.500MHz +HSync -VSync DoubleScan
h: width 840 start 864 end 880 total 920 skew 0 clock 64.67KHz
v: height 525 start 526 end 529 total 540 clock 59.88Hz
864x486 (0x6c) 32.500MHz -HSync +VSync
h: width 864 start 888 end 968 total 1072 skew 0 clock 30.32KHz
v: height 486 start 489 end 494 total 506 clock 59.92Hz
864x486 (0x6d) 30.500MHz +HSync -VSync
h: width 864 start 912 end 944 total 1024 skew 0 clock 29.79KHz
v: height 486 start 489 end 494 total 500 clock 59.57Hz
700x525 (0x6e) 61.000MHz +HSync +VSync DoubleScan
h: width 700 start 744 end 820 total 940 skew 0 clock 64.89KHz
v: height 525 start 526 end 532 total 541 clock 59.98Hz
800x450 (0x6f) 59.125MHz -HSync +VSync DoubleScan
h: width 800 start 848 end 928 total 1056 skew 0 clock 55.99KHz
v: height 450 start 451 end 454 total 467 clock 59.95Hz
800x450 (0x70) 48.750MHz +HSync -VSync DoubleScan
h: width 800 start 824 end 840 total 880 skew 0 clock 55.40KHz
v: height 450 start 451 end 454 total 463 clock 59.82Hz
640x512 (0x71) 54.000MHz +HSync +VSync DoubleScan
h: width 640 start 664 end 720 total 844 skew 0 clock 63.98KHz
v: height 512 start 512 end 514 total 533 clock 60.02Hz
700x450 (0x72) 51.750MHz -HSync +VSync DoubleScan
h: width 700 start 740 end 812 total 924 skew 0 clock 56.01KHz
v: height 450 start 451 end 456 total 467 clock 59.96Hz
700x450 (0x73) 43.250MHz +HSync -VSync DoubleScan
h: width 700 start 724 end 740 total 780 skew 0 clock 55.45KHz
v: height 450 start 451 end 456 total 463 clock 59.88Hz
640x480 (0x74) 54.000MHz +HSync +VSync DoubleScan
h: width 640 start 688 end 744 total 900 skew 0 clock 60.00KHz
v: height 480 start 480 end 482 total 500 clock 60.00Hz
640x480 (0x75) 25.175MHz -HSync -VSync
h: width 640 start 656 end 752 total 800 skew 0 clock 31.47KHz
v: height 480 start 490 end 492 total 525 clock 59.94Hz
720x405 (0x76) 22.500MHz -HSync +VSync
h: width 720 start 744 end 808 total 896 skew 0 clock 25.11KHz
v: height 405 start 408 end 413 total 422 clock 59.51Hz
720x405 (0x77) 21.750MHz +HSync -VSync
h: width 720 start 768 end 800 total 880 skew 0 clock 24.72KHz
v: height 405 start 408 end 413 total 419 clock 58.99Hz
684x384 (0x78) 42.625MHz -HSync +VSync DoubleScan
h: width 684 start 720 end 788 total 892 skew 0 clock 47.79KHz
v: height 384 start 385 end 390 total 399 clock 59.88Hz
684x384 (0x79) 36.125MHz +HSync -VSync DoubleScan
h: width 684 start 708 end 724 total 764 skew 0 clock 47.28KHz
v: height 384 start 385 end 390 total 395 clock 59.85Hz
640x400 (0x7a) 41.750MHz -HSync +VSync DoubleScan
h: width 640 start 676 end 740 total 840 skew 0 clock 49.70KHz
v: height 400 start 401 end 404 total 415 clock 59.88Hz
640x400 (0x7b) 35.500MHz +HSync -VSync DoubleScan
h: width 640 start 664 end 680 total 720 skew 0 clock 49.31KHz
v: height 400 start 401 end 404 total 411 clock 59.98Hz
640x360 (0x7c) 37.250MHz -HSync +VSync DoubleScan
h: width 640 start 672 end 736 total 832 skew 0 clock 44.77KHz
v: height 360 start 361 end 364 total 374 clock 59.86Hz
640x360 (0x7d) 31.875MHz +HSync -VSync DoubleScan
h: width 640 start 664 end 680 total 720 skew 0 clock 44.27KHz
v: height 360 start 361 end 364 total 370 clock 59.83Hz
640x360 (0x7e) 18.000MHz -HSync +VSync
h: width 640 start 664 end 720 total 800 skew 0 clock 22.50KHz
v: height 360 start 363 end 368 total 376 clock 59.84Hz
640x360 (0x7f) 17.750MHz +HSync -VSync
h: width 640 start 688 end 720 total 800 skew 0 clock 22.19KHz
v: height 360 start 363 end 368 total 374 clock 59.32Hz
512x384 (0x80) 32.500MHz -HSync -VSync DoubleScan
h: width 512 start 524 end 592 total 672 skew 0 clock 48.36KHz
v: height 384 start 385 end 388 total 403 clock 60.00Hz
512x288 (0x81) 23.250MHz -HSync +VSync DoubleScan
h: width 512 start 532 end 580 total 648 skew 0 clock 35.88KHz
v: height 288 start 289 end 292 total 299 clock 60.00Hz
512x288 (0x82) 21.000MHz +HSync -VSync DoubleScan
h: width 512 start 536 end 552 total 592 skew 0 clock 35.47KHz
v: height 288 start 289 end 292 total 296 clock 59.92Hz
480x270 (0x83) 20.375MHz -HSync +VSync DoubleScan
h: width 480 start 496 end 544 total 608 skew 0 clock 33.51KHz
v: height 270 start 271 end 274 total 281 clock 59.63Hz
480x270 (0x84) 18.625MHz +HSync -VSync DoubleScan
h: width 480 start 504 end 520 total 560 skew 0 clock 33.26KHz
v: height 270 start 271 end 274 total 278 clock 59.82Hz
400x300 (0x85) 20.000MHz +HSync +VSync DoubleScan
h: width 400 start 420 end 484 total 528 skew 0 clock 37.88KHz
v: height 300 start 300 end 302 total 314 clock 60.32Hz
400x300 (0x86) 18.000MHz +HSync +VSync DoubleScan
h: width 400 start 412 end 448 total 512 skew 0 clock 35.16KHz
v: height 300 start 300 end 301 total 312 clock 56.34Hz
432x243 (0x87) 16.250MHz -HSync +VSync DoubleScan
h: width 432 start 444 end 484 total 536 skew 0 clock 30.32KHz
v: height 243 start 244 end 247 total 253 clock 59.92Hz
432x243 (0x88) 15.250MHz +HSync -VSync DoubleScan
h: width 432 start 456 end 472 total 512 skew 0 clock 29.79KHz
v: height 243 start 244 end 247 total 250 clock 59.57Hz
320x240 (0x89) 12.587MHz -HSync -VSync DoubleScan
h: width 320 start 328 end 376 total 400 skew 0 clock 31.47KHz
v: height 240 start 245 end 246 total 262 clock 60.05Hz
360x202 (0x8a) 11.250MHz -HSync +VSync DoubleScan
h: width 360 start 372 end 404 total 448 skew 0 clock 25.11KHz
v: height 202 start 204 end 206 total 211 clock 59.51Hz
360x202 (0x8b) 10.875MHz +HSync -VSync DoubleScan
h: width 360 start 384 end 400 total 440 skew 0 clock 24.72KHz
v: height 202 start 204 end 206 total 209 clock 59.13Hz
320x180 (0x8c) 9.000MHz -HSync +VSync DoubleScan
h: width 320 start 332 end 360 total 400 skew 0 clock 22.50KHz
v: height 180 start 181 end 184 total 188 clock 59.84Hz
320x180 (0x8d) 8.875MHz +HSync -VSync DoubleScan
h: width 320 start 344 end 360 total 400 skew 0 clock 22.19KHz
v: height 180 start 181 end 184 total 187 clock 59.32Hz
（外接显示器为 DP-1-1。）
由于我怀疑图形驱动程序是问题所在，因此我曾经mhwd从“video-linux”（基本上是 nouveau）切换到专有驱动程序“video-hybrid-intel-nvidia-390xx-bumblebee”。
但是，使用此驱动程序后，外部监视器（以及其他几个输出）不再显示。的输出xrandr：
Screen 0: minimum 8 x 8, current 1600 x 900, maximum 32767 x 32767
LVDS1 connected primary 1600x900+0+0 (normal left inverted right x axis y axis) 310mm x 170mm
1600x900 60.06*+ 40.32
1400x900 59.88
1368x768 60.00 59.88 59.85
1280x800 59.81 59.91
1280x720 59.86 60.00 59.74
1024x768 60.00
1024x576 60.00 59.90 59.82
960x540 60.00 59.63 59.82
800x600 60.32 56.25
864x486 60.00 59.92 59.57
800x450 60.00
640x480 59.94
720x405 59.51 60.00 58.99
640x360 59.84 59.32 60.00
VGA1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
使用另一个驱动程序 (video-nvidia-390xx)，外部显示器工作正常，但笔记本电脑自己的显示器（之前的输出中为 LVDS-1/LVDS1 xrandr）不再显示：
Screen 0: minimum 8 x 8, current 4608 x 1440, maximum 16384 x 16384
VGA-0 disconnected (normal left inverted right x axis y axis)
LVDS-0 disconnected (normal left inverted right x axis y axis)
DP-0 disconnected (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-0 disconnected (normal left inverted right x axis y axis)
DP-2 connected primary 2560x1440+0+0 (normal left inverted right x axis y axis) 526mm x 296mm panning 4608x1440+0+0
2560x1440 59.95*+
2048x1080 60.00 24.00
1920x1200 59.88
1920x1080 60.00 59.94 50.00 23.98
1680x1050 59.95
1600x1200 60.00
1280x1024 75.02 60.02
1280x800 59.81
1280x720 59.94 50.00
1152x864 75.00
1024x768 75.03 60.00
800x600 75.00 60.32
720x576 50.00
720x480 59.94
640x480 75.00 59.94 59.93
DP-3 disconnected (normal left inverted right x axis y axis)
（外接显示器为DP-2）
这证实了我的假设，即我正在处理潜水员问题，但没有解决我的问题（因为明显的原因我需要使用笔记本电脑的显示器）。
此外，这使用intel-virtual-output（使用“video-hybrid-intel-nvidia-390xx-bumblebee”驱动程序）的解决方案也不起作用。
我尝试的另一个解决方案是使用bbswitch（使用“video-hybrid-intel-nvidia-390xx-bumblebee”驱动程序）打开独立显卡然后运行，sudo systemctl restart display-manager但外部显示器仍然没有出现在xrandr.
如何让两台显示器（外接显示器和笔记本电脑显示器）同时工作？
为什么使用“video-linux”驱动程序可以识别显示器，但我无法让它接收任何输入？
为什么显示器可以与专有的“video-nvidia-390xx”驱动程序配合使用，但不能与（也是专有的）“video-hybrid-intel-nvidia-390xx-bumblebee”驱动程序配合使用？
inxi -Fxxxz使用“video-linux”驱动程序的输出
inxi -G带“视频混合英特尔-nvidia-390xx-bumblebee”
inxi -G带“视频-nvidia-390xx”
答案1
我刚刚尝试过这个解决方案再次。不过，我/etc/bumblebee/xorg.conf.nvidia在跑步前做了一些改变optirun intel-virtual-output ，这次成功了。 Archwiki 没有提到这必须事先完成，所以我只是事后更改了配置文件，重新运行optirun intel-virtual-output可能不起作用，因为已经有一个实例正在运行。