Noobie linux user having trouble getting 3rd monitor working

Screen resolution, 3D Acceleration, nVidia, ATI
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locoloon
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Joined: Fri Feb 02, 2018 1:17 pm

Noobie linux user having trouble getting 3rd monitor working

Post by locoloon » Sat Feb 03, 2018 8:49 pm

the first 2 monitors work fine and are connected to my gtx560ti graphics card, the third is connected by a displayport to hdmi adapter(its a tv).

while booting I see the mint logo on the third screen, but when boot finishes It is displaying 4 dots.

below is the output of xrandr with the display port connected followed by the same output with it disconnected. I am not sure why it is showing up under hdmi vs display port.

mint@mint ~ $ xrandr
Screen 0: minimum 320 x 200, current 5280 x 1080, maximum 16384 x 16384
DVI-I-1 connected 1680x1050+1680+0 (normal left inverted right x axis y axis) 474mm x 297mm
1680x1050 59.95*+
1280x1024 75.02 60.02
1440x900 74.98 59.89
1280x960 60.00
1152x864 75.00
1280x720 75.02 60.00
1024x768 75.03 70.07 60.00
832x624 74.55
800x600 72.19 75.00 60.32 56.25
640x480 75.00 72.81 66.67 59.94
720x400 70.08
DVI-I-2 connected primary 1680x1050+0+0 (normal left inverted right x axis y axis) 474mm x 297mm
1680x1050 59.95*+
1280x1024 75.02 60.02
1440x900 74.98 59.89
1280x960 60.00
1152x864 75.00
1024x768 75.03 70.07 60.00
832x624 74.55
800x600 72.19 75.00 60.32 56.25
640x480 75.00 72.81 66.67 59.94
720x400 70.08
HDMI-1 disconnected (normal left inverted right x axis y axis)
DP1 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis)
DP3 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
HDMI3 connected 1920x1080+3360+0 (normal left inverted right x axis y axis) 983mm x 576mm
1920x1080 60.00*+ 50.00 59.94 30.00 25.00 24.00 29.97 23.98
1920x1080i 60.00 50.00 59.94
1600x900 60.00
1280x1024 60.02
1360x768 60.02
1280x720 60.00 50.00 59.94
1024x768 60.00
800x600 60.32
720x576 50.00
720x576i 50.00
720x480 60.00 59.94
720x480i 60.00 59.94
640x480 60.00 59.94
HDMI4 disconnected (normal left inverted right x axis y axis)
VGA1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
1280x1024 (0x57) 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
1280x720 (0x59) 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 (0x5c) 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 (0x5d) 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 (0x65) 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

with displayport disconnected the entry for hdmi 3 goes away.

mint@mint ~ $ xrandr
Screen 0: minimum 320 x 200, current 3360 x 1050, maximum 16384 x 16384
DVI-I-1 connected primary 1680x1050+0+0 (normal left inverted right x axis y axis) 474mm x 297mm
1680x1050 59.95*+
1280x1024 75.02 60.02
1440x900 74.98 59.89
1280x960 60.00
1152x864 75.00
1280x720 75.02 60.00
1024x768 75.03 70.07 60.00
832x624 74.55
800x600 72.19 75.00 60.32 56.25
640x480 75.00 72.81 66.67 59.94
720x400 70.08
DVI-I-2 connected 1680x1050+1680+0 (normal left inverted right x axis y axis) 474mm x 297mm
1680x1050 59.95*+
1280x1024 75.02 60.02
1440x900 74.98 59.89
1280x960 60.00
1152x864 75.00
1024x768 75.03 70.07 60.00
832x624 74.55
800x600 72.19 75.00 60.32 56.25
640x480 75.00 72.81 66.67 59.94
720x400 70.08
HDMI-1 disconnected (normal left inverted right x axis y axis)
DP1 disconnected (normal left inverted right x axis y axis)
DP2 disconnected (normal left inverted right x axis y axis)
DP3 disconnected (normal left inverted right x axis y axis)
HDMI2 disconnected (normal left inverted right x axis y axis)
HDMI3 disconnected (normal left inverted right x axis y axis)
HDMI4 disconnected (normal left inverted right x axis y axis)
VGA1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)


I am currently running off of a usb stick, and want to figure this out before commiting it to the hard drive.

Thanks in advance to all who take a look at this,

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