![]() Turns out the XFCE desktop I use simply doesn’t have any color management, like most other “smaller” FOSS desktop environments. Now I wanted to have the system and every application use my generated profile. The difference between using the calibration data and not using it was barely noticeable. I haven’t tried this update yet.)ĭispla圜AL/ArgyllCMS gave me a good profile using the huey and confirmed that the BL2711U actually exceeds the advertised 100% sRGB coverage. ![]() (I later found out that there is a firmware update to version 2.0.7 for the ColorHug2, which only seems to be available via the fwupd tool, but not via the colorhug-tools or from the repository where all the other releases can be found. So I gave up on the ColorHug2 for the moment and continued with the huey, but there are some indications that this might be another ColorHug2 issue. At that point the whole display had become a quite heavy purple (the Blue and Red channels being way overblown in comparison to Green), which definitely wasn’t right. The ColorHug2 measured a non-existing very heavy green tint, and I had to lower the Green channel from 100 to 80 to make the bars meet. With the huey, ArgyllCMS detected a very slight green tint with the factory settings, which I corrected by lowering the Green channel from 100 to 99 in the monitor settings. The dialogue shows the distribution between the three color channels, and if the display has the necessary controls (laptops don’t), you correct until all three channels meet in the middle. The Displa圜AL interactive display adjustment screen. So I expected both the huey and the ColorHug2 to see just minor deviations, and the measurements to be consistent. My photo editing monitor at home is a BenQ BL2711U, which is sold as a professional 4K CAD Monitor, has 100% sRGB color space coverage and is known to have very good color representation even on factory defaults. A work colleague lent me his Pantone huey colorimeter, which also works with ArgyllCMS. But before the calibration starts, Displa圜AL shows an interactive display adjustment screen to have you prepare the display as good as possible before the actual calibration starts. So I downloaded, built and installed it, and the calibration finally ran through. The known workaround for the problem seems to be an additional USB reset after the device is released (pointing to a firmware bug in the ColorHug2), which is contained in the very latest ArgyllCMS 2.0.1 beta development soure code. This is absolutely not what I expect when I invest more than 100 € in an Open Hardware device. Only to see ArgyllCMS fail every time time because the USB connection to the ColorHug2 kept failing after a while, which also seems to be a known issue. I had already used them two years ago to calibrate some devices at work, so I put the USB key aside, installed Displa圜AL on my devices, set up the ColorHug2, and started calibration runs. Well, it uses the Displa圜AL GUI frontend for ArgyllCMS anyways, and both these packages are in the repositories of any modern Linux distribution. ![]() ![]() Except that both my laptop and PC refused to even offer the key as a bootable device ( which seems to be a known issue). The created ICC color profiles can then also be used on other devices (even on Windows and MacOS). The ColorHug2 comes with a small USB storage key which is supposed to contain a Fedora Live Session environment with all the tools to calibrate the display.
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