Comment 16 for bug 1746666

First of all, I'm not opening a new bug because I'm on Mint 18.3 however I think this is an Ubuntu bug anyway... right now I can't install regular 16.04 Ubuntu, I will try as soon as possible.

With latest pciutils/libpci3 3.3.1-1.1ubuntu1.2 I cant see my external display on DP-1-1 any more and also with xrandr that display is missing:

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andrea@sibilla ~ $ xrandr
Screen 0: minimum 8 x 8, current 3840 x 1080, maximum 32767 x 32767
LVDS1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 344mm x 193mm
   1920x1080 60.02*+ 50.03 59.93
......omit......
VGA1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 disconnected (normal left inverted right x axis y axis)
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With old pciutils/libpci3 3.3.1-1.1ubuntu1 or 3.3.1-1.1ubuntu1.1 I have:

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andrea@sibilla ~ $ xrandr
Screen 0: minimum 8 x 8, current 3840 x 1080, maximum 32767 x 32767
LVDS1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 344mm x 193mm
   1920x1080 60.02*+ 50.03 59.93
......omit......
VGA1 disconnected (normal left inverted right x axis y axis)
VIRTUAL1 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)
DP-1-1 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 521mm x 293mm
   1920x1080 60.00*+
......omit......
DP-1-2 disconnected (normal left inverted right x axis y axis)
DP-1-3 disconnected (normal left inverted right x axis y axis)
  1680x1050 (0x4a) 119.000MHz +HSync -VSync
......omit......
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I tried many time upgrading and downgrading and the issue is absolutely confirmed.

I tried a lot of different config and the only way to get my external monitor working is downgrading pciutils/libpci3.

My hardware is a Lenovo ThinkPad W530.

andrea@sibilla ~ $ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
01:00.0 VGA compatible controller: NVIDIA Corporation GK107GLM [Quadro K1000M] (rev a1)

If you need some more info I'll be glad to help.