最近、3台のモニターをデスクトップに接続するために、新しいモニターとアダプターケーブルを購入しました。
ただし、3番目のモニターには何も表示されません。
電源コードを交換し、モニターとアダプターの両方が機能していることを確認しましたが、何らかの理由で私のシステムは一度に2つ以上のモニターを表示しません。新しいモニターが正常に機能するためには、1つのモニターを切断するだけです。両方のモニターを使用しますが、再接続すると表示されません。
WindowsとUbuntuを起動しましたが、両方とも3つのモニタの両方で正しく表示されるため、ハードウェアの問題や一般的なLinuxの問題ではありませんが、インストールに関する問題であることがわかります。
これは情報です。
私の主なモニター2つはDVIとHDMI（HDMI-DVIアダプターを使用）、3番目のモニターはMini-DisplayPort-DVIアダプターです。
これは「xrandr --verbose」の出力です。
Screen 0: minimum 320 x 200, current 3280 x 1050, maximum 16384 x 16384
DisplayPort-0 connected (normal left inverted right x axis y axis)
Identifier: 0x55
Timestamp: 1395416
Subpixel: horizontal rgb
Clones:
CRTCs: 1 2 0 3 4 5
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
EDID:
00ffffffffffff0022f0172901010101
0f140103802917782edc55a359489e24
115054a1080081c08140818001010101
010101010101662156aa51001e30468f
33009ae61000001e000000fd00324c18
5311000a202020202020000000fc0048
502053313933310a20202020000000ff
0033435130313533474e330a202000e4
TearFree: auto
supported: off, on, auto
output_csc: bypass
supported: bypass, tvrgb, ycbcr601, ycbcr709
audio: auto
supported: off, on, auto
scaling mode: None
supported: None, Full, Center, Full aspect
dither: off
supported: off, on
underscan vborder: 0
range: (0, 128)
underscan hborder: 0
range: (0, 128)
underscan: off
supported: off, on, auto
coherent: 1
range: (0, 1)
1366x768 (0x5a) 85.500MHz +HSync +VSync +preferred
h: width 1366 start 1436 end 1579 total 1792 skew 0 clock 47.71KHz
v: height 768 start 771 end 774 total 798 clock 59.79Hz
1280x1024 (0x5b) 108.000MHz +HSync +VSync
h: width 1280 start 1328 end 1440 total 1688 skew 0 clock 63.98KHz
v: height 1024 start 1025 end 1028 total 1066 clock 60.02Hz
1280x960 (0x5c) 108.000MHz +HSync +VSync
h: width 1280 start 1376 end 1488 total 1800 skew 0 clock 60.00KHz
v: height 960 start 961 end 964 total 1000 clock 60.00Hz
1280x720 (0x5d) 74.250MHz +HSync +VSync
h: width 1280 start 1390 end 1430 total 1650 skew 0 clock 45.00KHz
v: height 720 start 725 end 730 total 750 clock 60.00Hz
1024x768 (0x5e) 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
800x600 (0x5f) 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
640x480 (0x60) 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
720x400 (0x61) 28.320MHz -HSync +VSync
h: width 720 start 738 end 846 total 900 skew 0 clock 31.47KHz
v: height 400 start 412 end 414 total 449 clock 70.08Hz
DisplayPort-1 disconnected (normal left inverted right x axis y axis)
Identifier: 0x56
Timestamp: 1395416
Subpixel: horizontal rgb
Clones:
CRTCs: 1 2 0 3 4 5
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
TearFree: auto
supported: off, on, auto
output_csc: bypass
supported: bypass, tvrgb, ycbcr601, ycbcr709
audio: auto
supported: off, on, auto
scaling mode: None
supported: None, Full, Center, Full aspect
dither: off
supported: off, on
underscan vborder: 0
range: (0, 128)
underscan hborder: 0
range: (0, 128)
underscan: off
supported: off, on, auto
coherent: 1
range: (0, 1)
HDMI-0 connected 1600x900+0+103 (0x62) normal (normal left inverted right x axis y axis) 443mm x 249mm
Identifier: 0x57
Timestamp: 1395416
Subpixel: horizontal rgb
Gamma: 1.0:1.0:1.0
Brightness: 1.0
Clones:
CRTC: 2
CRTCs: 1 2 0 3 4 5
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
EDID:
00ffffffffffff000472730074b24090
04130103802c1978eade95a3544c9926
0f5054bfef80714f8140818081c08100
010101010101312e40006284223058a8
3500bbf91000001d000000fd00374b1f
500c000a202020202020000000ff004c
45563043303037343031300a000000fc
0058323033480a2020202020202000ba
TearFree: auto
supported: off, on, auto
output_csc: bypass
supported: bypass, tvrgb, ycbcr601, ycbcr709
audio: auto
supported: off, on, auto
scaling mode: None
supported: None, Full, Center, Full aspect
dither: off
supported: off, on
underscan vborder: 0
range: (0, 128)
underscan hborder: 0
range: (0, 128)
underscan: off
supported: off, on, auto
coherent: 1
range: (0, 1)
1600x900 (0x62) 118.250MHz -HSync +VSync *current +preferred
h: width 1600 start 1688 end 1856 total 2112 skew 0 clock 55.99KHz
v: height 900 start 903 end 908 total 934 clock 59.95Hz
1280x1024 (0x5b) 108.000MHz +HSync +VSync
h: width 1280 start 1328 end 1440 total 1688 skew 0 clock 63.98KHz
v: height 1024 start 1025 end 1028 total 1066 clock 60.02Hz
1280x960 (0x5c) 108.000MHz +HSync +VSync
h: width 1280 start 1376 end 1488 total 1800 skew 0 clock 60.00KHz
v: height 960 start 961 end 964 total 1000 clock 60.00Hz
1280x800 (0x63) 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
1152x864 (0x64) 108.000MHz +HSync +VSync
h: width 1152 start 1216 end 1344 total 1600 skew 0 clock 67.50KHz
v: height 864 start 865 end 868 total 900 clock 75.00Hz
1280x720 (0x5d) 74.250MHz +HSync +VSync
h: width 1280 start 1390 end 1430 total 1650 skew 0 clock 45.00KHz
v: height 720 start 725 end 730 total 750 clock 60.00Hz
1024x768 (0x65) 78.750MHz +HSync +VSync
h: width 1024 start 1040 end 1136 total 1312 skew 0 clock 60.02KHz
v: height 768 start 769 end 772 total 800 clock 75.03Hz
1024x768 (0x66) 75.000MHz -HSync -VSync
h: width 1024 start 1048 end 1184 total 1328 skew 0 clock 56.48KHz
v: height 768 start 771 end 777 total 806 clock 70.07Hz
1024x768 (0x5e) 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
832x624 (0x67) 57.284MHz -HSync -VSync
h: width 832 start 864 end 928 total 1152 skew 0 clock 49.73KHz
v: height 624 start 625 end 628 total 667 clock 74.55Hz
800x600 (0x68) 50.000MHz +HSync +VSync
h: width 800 start 856 end 976 total 1040 skew 0 clock 48.08KHz
v: height 600 start 637 end 643 total 666 clock 72.19Hz
800x600 (0x69) 49.500MHz +HSync +VSync
h: width 800 start 816 end 896 total 1056 skew 0 clock 46.88KHz
v: height 600 start 601 end 604 total 625 clock 75.00Hz
800x600 (0x5f) 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 (0x6a) 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
640x480 (0x6b) 31.500MHz -HSync -VSync
h: width 640 start 656 end 720 total 840 skew 0 clock 37.50KHz
v: height 480 start 481 end 484 total 500 clock 75.00Hz
640x480 (0x6c) 31.500MHz -HSync -VSync
h: width 640 start 664 end 704 total 832 skew 0 clock 37.86KHz
v: height 480 start 489 end 492 total 520 clock 72.81Hz
640x480 (0x6d) 30.240MHz -HSync -VSync
h: width 640 start 704 end 768 total 864 skew 0 clock 35.00KHz
v: height 480 start 483 end 486 total 525 clock 66.67Hz
640x480 (0x60) 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
720x400 (0x61) 28.320MHz -HSync +VSync
h: width 720 start 738 end 846 total 900 skew 0 clock 31.47KHz
v: height 400 start 412 end 414 total 449 clock 70.08Hz
DVI-0 connected primary 1680x1050+1600+0 (0x6e) normal (normal left inverted right x axis y axis) 473mm x 296mm
Identifier: 0x58
Timestamp: 1395416
Subpixel: horizontal rgb
Gamma: 1.0:1.0:1.0
Brightness: 1.0
Clones:
CRTC: 0
CRTCs: 1 2 0 3 4 5
Transform: 1.000000 0.000000 0.000000
0.000000 1.000000 0.000000
0.000000 0.000000 1.000000
filter:
EDID:
00ffffffffffff0010ac15d053315035
08120103802f1e78ee8f30a355499827
145054a54b00714f8180010101010101
0101010101017c2e90a0601a1e403020
3600d9281100001a000000ff004b5533
313138324b355031530a000000fd0038
4b1e530e000a202020202020000000fc
0044454c4c20453232385746500a0099
TearFree: auto
supported: off, on, auto
output_csc: bypass
supported: bypass, tvrgb, ycbcr601, ycbcr709
load detection: 1
range: (0, 1)
audio: auto
supported: off, on, auto
scaling mode: None
supported: None, Full, Center, Full aspect
dither: off
supported: off, on
underscan vborder: 0
range: (0, 128)
underscan hborder: 0
range: (0, 128)
underscan: off
supported: off, on, auto
coherent: 1
range: (0, 1)
1680x1050 (0x6e) 119.000MHz +HSync -VSync *current +preferred
h: width 1680 start 1728 end 1760 total 1840 skew 0 clock 64.67KHz
v: height 1050 start 1053 end 1059 total 1080 clock 59.88Hz
1280x1024 (0x6f) 135.000MHz +HSync +VSync
h: width 1280 start 1296 end 1440 total 1688 skew 0 clock 79.98KHz
v: height 1024 start 1025 end 1028 total 1066 clock 75.02Hz
1280x1024 (0x5b) 108.000MHz +HSync +VSync
h: width 1280 start 1328 end 1440 total 1688 skew 0 clock 63.98KHz
v: height 1024 start 1025 end 1028 total 1066 clock 60.02Hz
1152x864 (0x64) 108.000MHz +HSync +VSync
h: width 1152 start 1216 end 1344 total 1600 skew 0 clock 67.50KHz
v: height 864 start 865 end 868 total 900 clock 75.00Hz
1024x768 (0x65) 78.750MHz +HSync +VSync
h: width 1024 start 1040 end 1136 total 1312 skew 0 clock 60.02KHz
v: height 768 start 769 end 772 total 800 clock 75.03Hz
1024x768 (0x5e) 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
800x600 (0x69) 49.500MHz +HSync +VSync
h: width 800 start 816 end 896 total 1056 skew 0 clock 46.88KHz
v: height 600 start 601 end 604 total 625 clock 75.00Hz
800x600 (0x5f) 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
640x480 (0x6b) 31.500MHz -HSync -VSync
h: width 640 start 656 end 720 total 840 skew 0 clock 37.50KHz
v: height 480 start 481 end 484 total 500 clock 75.00Hz
640x480 (0x60) 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
720x400 (0x61) 28.320MHz -HSync +VSync
h: width 720 start 738 end 846 total 900 skew 0 clock 31.47KHz
v: height 400 start 412 end 414 total 449 clock 70.08Hz
「xrandr --output DisplayPort-0 --mode 1366x768」を使用して表示モードを手動で設定しようとすると、「xrandr：Failed toconfigure crtc 1」エラーが発生します。
arandrで同じことをしようとすると、同じエラーが発生します。
この質問の作成中に、開いているターミナルウィンドウにランダムにコンテンツが飛び出すことがわかりました。
[ 1525.72 ] error 9 BadDrawable request 14 minor 0 serial 2715850: "BadDrawable (invalid Pixmap or Window parameter)"
glx_bind_pixmap(0x03058ae6): Failed to query Pixmap info.
win_paint_win(0x04600049): Failed to bind texture. Expect troubles.
win_paint_win(0x04600049): Missing painting data. This is a bad sign.
私のシステム情報です
Linux Hal9000 4.9.28-1-MANJARO #1 SMP PREEMPT Sun May 14 13:32:39 UTC 2017 x86_64 GNU/Linux
私のGPUはRadeon 7770で、無料のドライバを使用しています。