<![CDATA[f.lux doesn't work properly with dual monitors when both are calibrated and using different ICC profiles]]>Windows 10 Pro 21H1

On my system, I have two Asus PB278Qs connected via DisplayPort to an Nvidia GTX 1070.

I have them both color calibrated (using a colorimeter) separately, and both have different ICC profiles.

Now that they both have their own profiles instead of sharing the same generic PB278Q profile, f.lux only appears to apply to a single screen (the primary).

]]>https://forum.justgetflux.com/topic/8025/f-lux-doesn-t-work-properly-with-dual-monitors-when-both-are-calibrated-and-using-different-icc-profilesRSS for NodeWed, 15 Apr 2026 00:03:48 GMTSun, 24 Oct 2021 23:20:22 GMT60<![CDATA[Reply to f.lux doesn't work properly with dual monitors when both are calibrated and using different ICC profiles on Tue, 26 Oct 2021 16:16:09 GMT]]>Okay we do know that NVIDIA has some settings in its own control panel that override color settings - can you check for "reference color" mode or something like that in the NVIDIA Control Panel? It should be turned off for f.lux to work.

]]>https://forum.justgetflux.com/post/24744https://forum.justgetflux.com/post/24744Tue, 26 Oct 2021 16:16:09 GMT<![CDATA[Reply to f.lux doesn't work properly with dual monitors when both are calibrated and using different ICC profiles on Tue, 26 Oct 2021 04:33:12 GMT]]>--------------------------- Driver info --------------------------- The information below is already on the clipboard. Paste to the f.lux forum or email us for help. NVIDIA 30.0.14.7212: NVIDIA GeForce GTX 1070 (20210913) NVIDIA 30.0.14.7212: NVIDIA GeForce GTX 970 (20210913) ASUS PB278, 597 x 336mm, built 2014 Chromaticities: R=0.666016 0.330078 G=0.309570 0.629883 B=0.150391 0.040039 W=0.313477 0.329102 sRGB gamut: 99%, AdobeRGB gamut: 69% ASUS PB278, 597 x 336mm, built 2014 Chromaticities: R=0.666016 0.330078 G=0.309570 0.629883 B=0.150391 0.040039 W=0.313477 0.329102 sRGB gamut: 99%, AdobeRGB gamut: 69% Unlimited gamma ramp=1, Internal ramp=1 Monitor 1 on NVIDIA GeForce GTX 1070 Has VCGT profile=1, Gamma Ramp works=1 Monitor 2 on NVIDIA GeForce GTX 1070 Has VCGT profile=1, Gamma Ramp works=1 Windows Build: 19043.1288 --------------------------- OK ---------------------------

Color-wise, they both calibrated substantially differently, and are using two different ICC profiles.

]]>https://forum.justgetflux.com/post/24741https://forum.justgetflux.com/post/24741Tue, 26 Oct 2021 04:33:12 GMT<![CDATA[Reply to f.lux doesn't work properly with dual monitors when both are calibrated and using different ICC profiles on Mon, 25 Oct 2021 17:08:42 GMT]]>Can you post f.lux options > driver info so we can see the details?

This sounds similar to a configuration we have here (which is working as it tends to always work here!)

]]>https://forum.justgetflux.com/post/24735https://forum.justgetflux.com/post/24735Mon, 25 Oct 2021 17:08:42 GMT