f.lux not working on a second external display through an usb2hdmi external adapter.

palexof

Hi,

I have a laptop with 2 external displays.
f.lux works flawlessly on both the built in laptop display and on the first external display, connected via the laptops built in hdmi port.
As my laptop lacks a second video out port I am using an external USB 3.0 to HDMI DisplayLink Adapter by StarTech.com.

f.lux seems to correctly recognize the second display according to the information below, but unfortunately it still fails to dim down the later:

NVIDIA 30.0.14.7212: NVIDIA GeForce GTX 860M (20210913)

Generic PnP Monitor, 345 x 194mm, built 2013
Chromaticities: 
  R=0.634766 0.344727
  G=0.334961 0.623047
  B=0.150391 0.051758
  W=0.313477 0.329102
  sRGB gamut: 83%, AdobeRGB gamut: 58%

Generic PnP Monitor, 698 x 393mm, built 2021
Chromaticities: 
  R=0.650391 0.330078
  G=0.309570 0.610352
  B=0.139648 0.070313
  W=0.313477 0.329102
  sRGB gamut: 99%, AdobeRGB gamut: 68%

Generic PnP Monitor, 860 x 360mm, built 2021
Chromaticities: 
  R=0.685547 0.302734
  G=0.251953 0.652344
  B=0.148438 0.064453
  W=0.313477 0.329102
  sRGB gamut: 101%, AdobeRGB gamut: 83%

Unlimited gamma ramp=1, Internal ramp=0
Monitor 1 on Intel(R) HD Graphics 4600
  Has VCGT profile=0, Gamma Ramp works=1
Monitor 2 on Intel(R) HD Graphics 4600
  Has VCGT profile=0, Gamma Ramp works=1
Monitor 3 on Intel(R) HD Graphics 4600
  Has VCGT profile=0, Gamma Ramp works=1

Windows Build: 7601

I would be happy to hear any suggestions on how to fix this issue.

Thanks!