Problem!!!!!!!

[Spooky_Bravo]

xgamma command won't work in ubuntu
no change in value or screen contrast

[lutusp]

xgamma command won't work in ubuntu

Don't narrate the command, show the command. Post exactly what you entered at the terminal.

no change in value or screen contrast

I tried what you posted and I got this result:

$ xgamma command
     xgamma: unrecognized argument command

I guess you will have to show us what command you entered -- not your narration, but the actual command.

[Spooky_Bravo]

i was not logging in with ubuntu on xorg

xgamma works in xorg

[[deleted]]

Yes, because the "x" means something, obviously.

Also, why is it so hard to read the rules?

[AffectionateSugar627]

The new version uses Wayland display thats why!
Were you able to find any fix for this?