Invert colours not working

[Smattie]

Displaylink manager 1.9.0 and 1.10.0 tested in combination with the D6000, D6000s and UD22. This also tested the difference of DP, DVI-D -> HDMI and HDMI cables and ports. The attached document lists all the different scenarios. In short, it seems that displaylink manager, both version 1.9.0 and alpha version 1.10.0

The UD22 works best in this case because it can use the HDMI port or the DP port in addition to the HDMI port even without displaylink manager.

My test:
Dell D6000:
- Displaylink version 1.9.0 on, 2 screens connected to DP = both external displays do not take over settings
- Displaylink version 1.9.0 on, 2 screens connected, 1 to DP and 1 via DVI-D to HDMI = both external displays do not take over settings
- Displaylink version 1.9.0 on, 2 screens connected, 1 to DP and 1 to HDMI = both external screens do not take over settings

- Displaylink version 1.9.0 off, 2 screens connected to DP = no image on either screen
- Displaylink version 1.9.0 off, 2 screens connected, 1 on DP and 1 via DVI-D to HDMI = no image on either screen
- Displaylink version 1.9.0 off, 2 screens connected, 1 to DP and 1 to HDMI = no picture on either screen

- Displaylink version 1.10.0 on, 2 screens connected to DP = both external screens do not take over settings
- Displaylink version 1.10.0 on, 2 screens connected, 1 on DP and 1 via DVI-D to HDMI = both external screens do not take over settings
- Displaylink version 1.10.0 on, 2 screens connected, 1 to DP and 1 to HDMI = both external screens do not take over settings

- Displaylink version 1.10.0 off, 2 screens connected to DP = no image on either screen
- Displaylink version 1.10.0 off, 2 screens connected, 1 on DP and 1 via DVI-D to HDMI = no image on either screen
- Displaylink version 1.10.0 off, 2 screens connected, 1 to DP and 1 to HDMI = no picture on either screen

Dell D6000s:
- Displaylink version 1.9.0 on, 2 screens connected to DP = both external displays do not take over settings
- Displaylink version 1.9.0 on, 2 screens connected, 1 to DP and 1 via DVI-D to HDMI = both external displays do not take over settings
- Displaylink version 1.9.0 on, 2 screens connected, 1 to DP and 1 to HDMI = both external screens do not take over settings

- Displaylink version 1.9.0 off, 2 screens connected to DP = no image on either screen
- Displaylink version 1.9.0 off, 2 screens connected, 1 on DP and 1 via DVI-D to HDMI = Screen connected via DVI-D -> HDMI gives picture and takes over settings, other screen via DP gives no picture
- Displaylink version 1.9.0 out, 2 screens connected, 1 to DP and 1 to HDMI = Screen connected to HDMI gives picture and takes over settings, other screen via DP gives no picture

- Displaylink version 1.10.0 on, 2 screens connected to DP = both external screens do not take over settings
- Displaylink version 1.10.0 on, 2 screens connected, 1 to DP and 1 via DVI-D to HDMI = both external screens do not take over settings
- Displaylink version 1.10.0 on, 2 screens connected, 1 to DP and 1 to HDMI = both external screens do not take over settings

- Displaylink version 1.10.0 off, 2 screens connected to DP = no image on both screens
- Displaylink version 1.10.0 off, 2 screens connected, 1 on DP and 1 via DVI-D to HDMI = Screen connected via DVI-D -> HDMI gives picture and takes over settings, other screen via DP gives no picture
- Displaylink version 1.10.0 off, 2 screens connected, 1 to DP and 1 to HDMI = Screen connected to HDMI gives picture and takes over settings, other screen via DP gives no picture

Dell UD22:
- Displaylink version 1.9.0 on, 2 screens connected to DP = both external screens do not take over settings
- Displaylink version 1.9.0 on, 2 screens connected, 1 to DP and 1 via DVI-D to HDMI = Screen connected via DVI-D -> HDMI does take over settings, other screen via DP does not take over settings
- Displaylink version 1.9.0 on, 2 screens connected, 1 to DP and 1 to HDMI = Screen connected via HDMI does take settings, other screen via DP does not take settings

- Displaylink version 1.9.0 off, 2 screens connected to DP = 1 screen connected to DP shows image and takes settings, other screen via DP does not show image (Only DP port next to HDMI takes settings)
- Displaylink version 1.9.0 out, 2 screens connected, 1 on DP and 1 via DVI-D to HDMI = Both screens give picture and take over settings. However, the 2 screens are only recognised as 1 in system settings and are duplicated. Doesn't seem to be something in the settings. (Docking needs to be reconnected to the macbook to reproduce this. If you only re-pair the monitor cables only 1 of the 2 screens does it)
- Displaylink version 1.9.0 out, 2 screens connected, 1 to DP and 1 to HDMI = Both screens give picture and take settings. However, the 2 screens are only recognised as 1 in system settings and are duplicated. Doesn't seem to be something in the settings. (Docking needs to be reconnected to the macbook to reproduce this. If you only re-pair the monitor cables only 1 of the 2 screens does it)

- Displaylink version 1.10.0 on, 2 screens connected to DP = both external screens do not take over settings
- Displaylink version 1.10.0 on, 2 screens connected, 1 to DP and 1 via DVI-D to HDMI = Screen connected via DVI-D -> HDMI does take over settings, other screen via DP does not take over settings
- Displaylink version 1.10.0 on, 2 screens connected, 1 to DP and 1 to HDMI = Screen connected via HDMI does take over settings, other screen via DP does not take over settings
- Displaylink version 1.10.0 off, 2 screens connected to DP = 1 screen connected to DP gives picture and takes over settings, other screen via DP does not give picture (Only DP port next to HDMI takes over settings)
- Displaylink version 1.10.0 out, 2 screens connected, 1 to DP and 1 via DVI-D to HDMI = Both screens give picture and take over settings. However, the 2 screens are only recognised as 1 in system settings and are duplicated. Doesn't seem to be something in the settings. (Docking needs to be reconnected to macbook to reproduce this. If you only re-pair the monitor cables only 1 of the 2 screens does it)
- Displaylink version 1.10.0 out, 2 screens connected, 1 to DP and 1 to HDMI = Both screens give picture and take settings. However, the 2 screens are only recognised as 1 in system settings and are duplicated. Doesn't seem to be something in the settings. (Docking needs to be reconnected to macbook to reproduce this. If you only re-pair the monitor cables only 1 of the 2 screens does it)