If you have a texture gamma corrected 2.2 and you view it in a typical old CRT monitor that has a gamma 1.4 and not 2.2 you will not see the right colors

(x^1/2.2)^1.4 = x^0.8 and not x^1 = 1

CRT tubes has not a gamma 2.2 !!!!, the theorical value is 1.5, in practice due to the anode voltage are a little more linear and so, the value 1.4 is used.

You must use a texture corrected with gamma 1.4 or use a normal texture without GC and then correct the final image with a gamma 1.4

In modern LCD/LED monitors the gamma is 1.0, so they need no gamma correction. You can verify this very easily, take the same image and look it in an old CRT monitor and then look it in a LCD/LED monitor, you will see the clear difference in the dark areas of the image. You must use an old CRT monitor or a cheap one because many modern CRT monitors have built-in gamma correction electronics

Stupidity also evolves!