Unability to change monitor resolutions&position (Thinkpad P50, Nvidia Quadro M1000M, with docking station)

Graphics / Linux Linux
1

I have 2 monitors connected into P50’s docking station (one VGA, one DVI). My desired layout is: notebook monitor (DP-4) on the left, right of it first monitor(DP-3.2) (rotated 90degrees), right of it second monitor (DP-3.3). Every monitor has 1920x1080 resolution.
But somehow I’m stuck with different layout (from left: rotated DP-3.2, DP-3.3, DP-4).
When I run nvidia-settings and change layout there and confirm, the monitors flicker for a while (it looks like it is trying the layout I want), but after few seconds I’m back at the wrong layout.
This is snippet of output of /var/log/Xorg.0.log when I confirm the new layout:

[ 562.601] (II) NVIDIA(0): Setting mode "DPY-6:nvidia-auto-select+0+0,DPY-0:nvidia-auto-select+1920+0{rotation=right
[ 564.179] (II) NVIDIA(0): Setting mode "DP-4: nvidia-auto-select @1920x1080 +0+0 {ViewPortIn=1920x1080, ViewPortOut=1920x1080+0+0, Rotation=270}, DP-3.3: nvidia-auto-select @1920x1080 +3000+0 {ViewPortIn=1920x1080, ViewPortOut=1920x1
[ 565.665] (II) NVIDIA(0): Setting mode "DP-4: nvidia-auto-select @1920x1080 +0+0 {ViewPortIn=1920x1080, ViewPortOut=1920x1080+0+0, Rotation=270}, DP-3.3: nvidia-auto-select @1920x1080 +1080+0 {ViewPortIn=1920x1080, ViewPortOut=1920x1
[ 567.043] (II) NVIDIA(0): Setting mode "DP-4: nvidia-auto-select @1920x1080 +3000+0 {ViewPortIn=1920x1080, ViewPortOut=1920x1080+0+0, Rotation=270}, DP-3.3: nvidia-auto-select @1920x1080 +1080+0 {ViewPortIn=1920x1080, ViewPortOut=192

I really don’t grok what is the DPY-6, when my monitors are DP-4, DP-3.2 and DP-3.3.
I tried to delete /etc/X11/xorg.conf and generate new, deleting ~/.nvidia-settings-rc and ~/.nv.

I’m on Fedora 26. I’ve tried nvidia drivers installed from rpmfusion and from Nvidia driver, CUDA tools and libraries – negativo17.org

In this google drive are two tarballs generated by nvidia-bug-report.sh: https://drive.google.com/drive/folders/0B9OUl4QZrhPFak95UC1jQ0tJVEE?usp=sharing

2

Even turning the two external monitors in nvidia-settings does nothing. Nvidia-settings says they are turned off, but in fact they aren’t (still stuck with wrong layout). Pushing “Detect Displays” or restarting nvidia-config shows the wrong layout again.

3

Doesn’t the gnome monitor manager work? Alternatively, use the appropriate xrandr commands?

4

I’m using Plasma and its monitor management does the same thing as nvidia-settings. Doing ‘xrandr --output DP-4 --auto --output DP-3.2 --right-of DP-4 --auto --output DP-3.3 --right-of DP-3.2 --auto’ which imho should do what I want does the same as nvidia-setting and plasma monitor management software. The monitors blinks (trying to apply new settings) and then falls back to the wrong dayout.

5

Well read this, dpy-6 is just some name aliase for one of your display outputs:
https://us.download.nvidia.com/XFree86/Linux-x86/375.39/README/displaydevicenames.html

6

Does creating a xorg ServerLayout section with the desired layout work?
[url]ftp://www.x.org/pub/xorg/X11R6.8.1/doc/DESIGN2.html[/url]