Can't use third monitor, Radeon HD 8830M

Eino Virtanen eino.vir at gmail.com
Tue Sep 11 12:55:57 UTC 2018


Hello everyone,

I have three monitors. Each connected with DVI cables to a Radeon HD
8830M. Two of them are connected with a DVI-DP adapter. The problem is
that I can only enable two of the monitors simultaneously, otherwise I
get this error message: "xrandr: Configure crtc 0 failed"

Both of the following work fine:

"xrandr --output DisplayPort-3 --mode 1680x1050 --pos 1920x0 --rotate
normal --output DisplayPort-4 --mode 1920x1200 --pos 0x0 --rotate
normal --output HDMI-1-2 --off --output HDMI-1-1 --off --output DVI-0
--off --output DP-1-3 --off --output DP-1-2 --off --output DP-1-1
--off"

and

"xrandr --output DisplayPort-3 --off --output DisplayPort-4 --mode
1920x1200 --pos 1680x0 --rotate normal --output HDMI-1-2 --off
--output HDMI-1-1 --off --output DVI-0 --mode 1680x1050 --pos 0x0
--rotate normal --output DP-1-3 --off --output DP-1-2 --off --output
DP-1-1 --off"

but when I try to enable three monitors in the following way:

"xrandr --verbose --output DisplayPort-3 --mode 1680x1050 --pos 3600x0
--rotate normal --output DisplayPort-4 --mode 1920x1200 --pos 1680x0
--rotate normal --output HDMI-1-2 --off --output HDMI-1-1 --off
--output DVI-0 --mode 1680x1050 --pos 0x0 --rotate normal --output
DP-1-3 --off --output DP-1-2 --off --output DP-1-1 --off"

I get the following error message:

"$ bash .screenlayout/testi.sh
screen 0: 5280x1200 1399x318 mm  95.85dpi
crtc 0:    1680x1050  59.95 +3600+0 "DisplayPort-3"
xrandr: Configure crtc 0 failed
crtc 0: disable
crtc 1: disable
crtc 2: disable
crtc 3: disable
crtc 4: disable
crtc 5: disable
crtc 6: disable
crtc 7: disable
crtc 8: disable
screen 0: revert
crtc 0: revert
crtc 1: revert
crtc 2: revert
crtc 3: revert
crtc 4: revert
crtc 5: revert
crtc 6: revert
crtc 7: revert
crtc 8: revert"

The outputs that are not in use in the scripts are outputs of the motherboard.

I will include various xrandr outputs after this sentence:

"$ xrandr --listproviders
Providers: number : 2
Provider 0: id: 0x80 cap: 0x9, Source Output, Sink Offload crtcs: 6
outputs: 3 associated providers: 1 name:VERDE @ pci:0000:01:00.0
Provider 1: id: 0x47 cap: 0x6, Sink Output, Source Offload crtcs: 3
outputs: 5 associated providers: 1 name:modesetting"

"$ xrandr --verbose

Screen 0: minimum 320 x 200, current 3600 x 1200, maximum 16384 x 16384
DisplayPort-3 connected (normal left inverted right x axis y axis)
Identifier: 0x7d
Timestamp:  11386726
Subpixel:   horizontal rgb
Clones:
CRTCs:      0 1 2 3 4 5
Transform:  1.000000 0.000000 0.000000
           0.000000 1.000000 0.000000
           0.000000 0.000000 1.000000
          filter:
EDID:
00ffffffffffff0010ac3c404d433846
2b120103802f1e78eaa6e5aa5132ac26
145054a54b00714f8180b30001010101
01010101010121399030621a274068b0
3600d9281100001c000000ff00473435
36483841504638434d0a000000fc0044
454c4c20323230385746500a000000fd
00384c1e5310000a202020202020004d
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)
non-desktop: 0
range: (0, 1)
link-status: Good
supported: Good, Bad
  1680x1050 (0x81) 146.250MHz -HSync +VSync +preferred
        h: width  1680 start 1784 end 1960 total 2240 skew    0 clock  65.29KHz
        v: height 1050 start 1053 end 1059 total 1089           clock  59.95Hz
  1280x1024 (0x82) 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 (0x83) 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 (0x84) 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 (0x85) 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 (0x86) 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 (0x87) 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 (0x88) 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 (0x89) 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 (0x8a) 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 (0x8b) 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-4 connected 1920x1200+1680+0 (0x8c) normal (normal left
inverted right x axis y axis) 518mm x 324mm
Identifier: 0x7e
Timestamp:  11386726
Subpixel:   horizontal rgb
Gamma:      1.0:1.0:1.0
Brightness: 1.0
Clones:
CRTC:       1
CRTCs:      0 1 2 3 4 5
Transform:  1.000000 0.000000 0.000000
           0.000000 1.000000 0.000000
           0.000000 0.000000 1.000000
          filter:
EDID:
00ffffffffffff0030ae441101010101
1f13010380342078ee9ec5a6564b9a25
135054adcf0031468180818c9500950f
b300a940d1c0283c80a070b023403020
360006442100001a1a3680a070381f40
3020350006442100001a000000fd0032
4b1e4b11000a202020202020000000ff
0056502d30313436340a20202020002c
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)
non-desktop: 0
range: (0, 1)
link-status: Good
supported: Good, Bad
  1920x1200 (0x8c) 154.000MHz +HSync -VSync *current +preferred
        h: width  1920 start 1968 end 2000 total 2080 skew    0 clock  74.04KHz
        v: height 1200 start 1203 end 1209 total 1235           clock  59.95Hz
  1920x1080 (0x8d) 138.500MHz +HSync -VSync
        h: width  1920 start 1968 end 2000 total 2080 skew    0 clock  66.59KHz
        v: height 1080 start 1083 end 1088 total 1111           clock  59.93Hz
  1600x1200 (0x8e) 162.000MHz +HSync +VSync
        h: width  1600 start 1664 end 1856 total 2160 skew    0 clock  75.00KHz
        v: height 1200 start 1201 end 1204 total 1250           clock  60.00Hz
  1680x1050 (0x8f) 119.000MHz +HSync -VSync
        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 (0x82) 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 (0x90) 132.840MHz -HSync +VSync
        h: width  1280 start 1368 end 1504 total 1728 skew    0 clock  76.88KHz
        v: height 1024 start 1025 end 1028 total 1067           clock  72.05Hz
  1280x1024 (0x83) 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
  1440x900 (0x91) 136.750MHz -HSync +VSync
        h: width  1440 start 1536 end 1688 total 1936 skew    0 clock  70.64KHz
        v: height  900 start  903 end  909 total  942           clock  74.98Hz
  1440x900 (0x92) 88.750MHz +HSync -VSync
        h: width  1440 start 1488 end 1520 total 1600 skew    0 clock  55.47KHz
        v: height  900 start  903 end  909 total  926           clock  59.90Hz
  1024x768 (0x85) 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 (0x93) 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 (0x86) 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 (0x94) 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 (0x87) 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 (0x88) 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 (0x89) 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 (0x95) 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 (0x96) 26.885MHz -HSync +VSync
        h: width   640 start  664 end  728 total  816 skew    0 clock  32.95KHz
        v: height  480 start  481 end  484 total  499           clock  66.03Hz
  640x480 (0x8a) 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 (0x8b) 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 1680x1050+0+0 (0x8f) normal (normal left inverted
right x axis y axis) 474mm x 296mm
Identifier: 0x7f
Timestamp:  11386726
Subpixel:   horizontal rgb
Gamma:      1.0:1.0:1.0
Brightness: 1.0
Clones:
CRTC:       2
CRTCs:      0 1 2 3 4 5
Transform:  1.000000 0.000000 0.000000
           0.000000 1.000000 0.000000
           0.000000 0.000000 1.000000
          filter:
EDID:
00ffffffffffff0010ac4e4043504830
18130103802f1e78eeee95a3544c9926
0f5054a54b00714f8180b30001010101
0101010101017c2e90a0601a1e403020
3600da281100001a000000ff00573431
364b393639304850430a000000fc0044
454c4c2050323231300a2020000000fd
00384b1e5310000a20202020202000e4
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)
non-desktop: 0
range: (0, 1)
link-status: Good
supported: Good, Bad
  1680x1050 (0x8f) 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 (0x82) 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 (0x83) 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 (0x84) 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 (0x85) 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 (0x86) 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 (0x87) 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 (0x88) 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 (0x89) 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 (0x8a) 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 (0x8b) 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
DP-1-1 disconnected (normal left inverted right x axis y axis)
Identifier: 0x42
Timestamp:  11386726
Subpixel:   unknown
Clones:     HDMI-1-1
CRTCs:      6 7 8
Transform:  1.000000 0.000000 0.000000
           0.000000 1.000000 0.000000
           0.000000 0.000000 1.000000
          filter:
PRIME Synchronization: 1
supported: 0, 1
Broadcast RGB: Automatic
supported: Automatic, Full, Limited 16:235
audio: auto
supported: force-dvi, off, auto, on
non-desktop: 0
range: (0, 1)
link-status: Good
supported: Good, Bad
HDMI-1-1 disconnected (normal left inverted right x axis y axis)
Identifier: 0x43
Timestamp:  11386726
Subpixel:   unknown
Clones:     DP-1-1
CRTCs:      6 7 8
Transform:  1.000000 0.000000 0.000000
           0.000000 1.000000 0.000000
           0.000000 0.000000 1.000000
          filter:
PRIME Synchronization: 1
supported: 0, 1
aspect ratio: Automatic
supported: Automatic, 4:3, 16:9
Broadcast RGB: Automatic
supported: Automatic, Full, Limited 16:235
audio: auto
supported: force-dvi, off, auto, on
non-desktop: 0
range: (0, 1)
link-status: Good
supported: Good, Bad
DP-1-2 disconnected (normal left inverted right x axis y axis)
Identifier: 0x44
Timestamp:  11386726
Subpixel:   unknown
Clones:     HDMI-1-2
CRTCs:      6 7 8
Transform:  1.000000 0.000000 0.000000
           0.000000 1.000000 0.000000
           0.000000 0.000000 1.000000
          filter:
PRIME Synchronization: 1
supported: 0, 1
Broadcast RGB: Automatic
supported: Automatic, Full, Limited 16:235
audio: auto
supported: force-dvi, off, auto, on
non-desktop: 0
range: (0, 1)
link-status: Good
supported: Good, Bad
HDMI-1-2 disconnected (normal left inverted right x axis y axis)
Identifier: 0x45
Timestamp:  11386726
Subpixel:   unknown
Clones:     DP-1-2
CRTCs:      6 7 8
Transform:  1.000000 0.000000 0.000000
           0.000000 1.000000 0.000000
           0.000000 0.000000 1.000000
          filter:
PRIME Synchronization: 1
supported: 0, 1
aspect ratio: Automatic
supported: Automatic, 4:3, 16:9
Broadcast RGB: Automatic
supported: Automatic, Full, Limited 16:235
audio: auto
supported: force-dvi, off, auto, on
non-desktop: 0
range: (0, 1)
link-status: Good
supported: Good, Bad
DP-1-3 disconnected (normal left inverted right x axis y axis)
Identifier: 0x46
Timestamp:  11386726
Subpixel:   unknown
Clones:
CRTCs:      6 7 8
Transform:  1.000000 0.000000 0.000000
           0.000000 1.000000 0.000000
           0.000000 0.000000 1.000000
          filter:
PRIME Synchronization: 1
supported: 0, 1
Broadcast RGB: Automatic
supported: Automatic, Full, Limited 16:235
audio: auto
supported: force-dvi, off, auto, on
non-desktop: 0
range: (0, 1)
link-status: Good
supported: Good, Bad"

If anyone could help me with this, I would be eternally grateful.
Thank you in advance!

Best regards,
E


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