Thanks for mentioning DisplayCAL. @d11
Did you create a color profile with a hardware device or install a suitable, pre-configured .icc file through DisplayCAL? I have just installed DisplayCAL through AppGrid and upon start-up it was mentioned that an update is available. Do you know how I can update it?
Unfortunately, there is no update possibility in the program itself and the website points to two different installation options, both which I am not familiar with: DisplayCAL standalone .deb package and DisplayCAL via Zero Install. I am not sure how to proceed and get it installed. Not sure what to make of the provided installation instructions.