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zb3 / gnome-gamma-tool

A command-line tool that lets you change gamma in GNOME and Cinnamon (with Wayland). You can also adjust contrast and brightness. It works by creating a color profile with the VCGT table, so that changes are persistent and don't interfere with other settings like night light.
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Applied profiles do not change gamma #12

Closed Milliw closed 1 year ago

Milliw commented 1 year ago

Tried for both of my displays. Profile does get applied as I can tell by checking in Gnome settings but it does not change gamma at all.

I guess it's due to Nvidia drivers not allowing gamma change on Wayland - but I do not know for sure as I have only read that information online. If so, it should be mentioned in the readme.

Regards =)

zb3 commented 1 year ago

@Milliw take a look at https://github.com/zb3/gnome-gamma-tool/issues/11 Which versions are you using?

Milliw commented 1 year ago

@Milliw take a look at #11 Which versions are you using?

Gnome 43.2, Nobara 37, Kernel 6.2.14-300.fsync.fc37.x86_64 x86_64 If that is, what you've asked for. Not sure though.

Read that #11 issue.

zb3 commented 1 year ago

@Milliw did it work before? That issue mentions that the solution was to upgrade the kernel, but he also used nvidia.

So logically it shouldn't be that nvidia somehow prevents the gamma from being changed on Wayland, because that user got it to work

Milliw commented 1 year ago

Don't know, what you mean by "before". I tried to use this script for the first time.

There does not seem to be an upgrade to kernel 6.3 available for Nobara yet.

zb3 commented 1 year ago

Ok, I didn't know that. But like I said, I can't say that it doesn't work with NVIDIA at all, because that user says it does. I can keep this issue open though.

Milliw commented 1 year ago

Thx for your effort. I will report back after my OS has kernel 6.3 available.

Milliw commented 1 year ago

Hey there. Just want to report back. Meanwhile 6.3 kernel arrived on Nobara but I also changed to AMD graphics card at the same time. So I can only report back, that it is working now. Sorry to not beeing able to report something more useful but it was really by accident having both changes at the same time...

Nevertheless I want to thank you again for this really handy tool! =)