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Just upgraded from 17.04 to 17.10 on a Dell laptop with a DisplayLink dock. I've reinstalled the latest 1.4 DisplayLink drivers - but I'm not sure this is a DisplayLink issue (Maybe it is). I'm also using the latest NVidia 384.90 driver.

When I make changes to my monitor scaling and position/order - I don't have get an Apply button. If I remove the laptops connection to the dock (and reboot) I do get the expected green Apply button in the top right hand corner after making changes.

Anyone have any idea where to start looking for a solution? I looks like there are people on the DisplayLink forums using 17.10 with the 1.4 driver - but again I'm not convinced this is a DisplayLink issue.

I tried logging back into a Unity session, but cannot make any changes to displays over there I get an error about not being able to read the monitor configuration.

First Screen Shot of Settings page

Second Screen Shot of Settings page

Zanna
  • 72,312
Karl Carpenter
  • 91

2 Answers2

1

Whether or not it is the proper solution, I downloaded ARandr to modify Xrandr settings and was able to set up the proper display ordering and resolutions on my 2 external monitors outside of the gnome display settings.

I still have a bit of a scale issue, but I think that will be tolerable until I find a better way to set scale percentage.

Zanna
  • 72,312
Karl Carpenter
  • 91
0

(Update: This solution doesn't work in the end (see my first comment) but I'm leaving it here in case it can maybe help someone.)

I have the same issue, what I did was edit ~/.config/monitors.xml and change the scale from 1 to 2 for my monitor that had 4k resolution (the laptop's display, which is also the primary monitor in my case):

<logicalmonitor>
  <x>0</x>
  <y>0</y>
  <scale>2</scale> <!-- Scale was originally set to 1 -->
  <primary>yes</primary>
  <monitor>
    <monitorspec>
      <connector>eDP-1-1</connector>
      <vendor>SHP</vendor>
      <product>0x1476</product>
      <serial>0x00000000</serial>
    </monitorspec>
    <mode>
      <width>3840</width>
      <height>2160</height>
      <rate>59.996623992919922</rate>
    </mode>
  </monitor>
</logicalmonitor>

I then logged out and back in. Opening the display pannel now shows scale set to 200% for my 4k monitor.

Fred Dubois
  • 156