From: nomail@hotmail.com   
      
   On 11/24/25 17:52, Paul wrote:   
   > On Mon, 11/24/2025 8:43 AM, Edmund wrote:   
   >> Created Monitor Profiles are not shown.   
   >>   
   >> Trying to create a new one and it says : a profile of this name already   
   exists.   
   >>   
   >> How to solve this?   
      
   Oh dear, that seems complicated.   
   >   
   > You are here ?   
   >   
   >     [Picture]   
   >   
   >      https://i.postimg.cc/d0rLd87G/LM222-Settings-Color-Gnome-   
   olor-Manager.gif   
      
   Nope, I am here :   
   https://imgur.com/a/pLvgMHS   
      
   In my Mint XFCE menu settings display.   
   Here is a option to save profiles, it even seem to do so but it is   
   invisible.   
      
      
   >   
   > When you visit Settings : Color or so, the left hand dialog shows up.   
   > The software then lazily installs "gnome-color-manager" package   
   > and something in there makes the right hand display.   
   >   
   > The ~/.local/share/icc  stores raw .icc files, without labeling   
   > them in any useful way. Because these say "EDID" on them, they're   
   > copied out of the monitor ROM. I have two, because the SSD was   
   > shoved into two machines and picked up two monitor profiles   
   > because of it.   
   >   
   > There is /usr/libexec/colord running, which may have something   
   > to do with actually changing the colors, when you change the   
   > ticked profile in the Colors panel.   
   >   
   > *******   
   >   
   > I added Wide Gamut RGB from the canned ICC profiles already   
   > on the machine. I put it underneath my monitor entry, using   
   > "Add Profile", and those profiles are stored in   
   >   
   >     /usr/share/color/icc/colord/WideGamutRGB.icc   
   >   
   > and obviously the computer is not going to like it, if   
   > you attempt to overwrite those. There is likely root   
   > ownership of some materials in there.   
   >   
   > The question then, is "how do we make an Edmund.icc and store it?".   
   > With a Spyder and some sort of software that comes with the   
   > Spyder? We do it on Windows, and bring the .icc across.   
   > And then what ?   
   >   
   > I would be all excited, except when I selected WideGamutRGB.icc   
   > and ticked it, nothing happened, and nothing happened after a reboot either.   
   >   
   > I tried Ubuntu 25.04, and the interface in Settings is   
   > even *less* developed :-)   
   >   
   > *******   
   >   
   > I found a general overview here. Maybe an Arch article   
   > would do a better job on something like this.   
   >   
   >    https://en.wikipedia.org/wiki/Linux_color_management   
   >   
   > Xrandr has a single point gamma adjustment possible.   
   > That could be used to "turn down the blue a bit", but   
   > this is hardly useful. The graphically oriented gamma   
   > adjustment is better (piece-wise polynomial corrections),   
   > but the NVidia control panel is missing all that stuff.   
   > If there was any Lookup Table (LUT) loader, it's not   
   > in evidence.   
   >   
   >    https://linux.die.net/man/1/xrandr   
   >   
   > My first attempt at this, I "discovered"... nothing,   
   > via the interface. Nothing at all :-)   
   >   
   >     Paul   
      
   --- SoupGate-Win32 v1.05   
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