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+--- Thread: Gamma slider does not work (/showthread.php?tid=24274)
Gamma slider does not work - benit - 11th February 2017
Can anybody reproduce this? I have switched to NVidia recommended drivers. I have a card with NVidia Optimus, GT 645.
RE: Gamma slider does not work - AJSlye - 12th February 2017
Nvidia Optimus means that you have both an Intel chip, as well as the Nvidia chip.
Typically the Intel is used for day to day computing, while the nvidia is reserved for gaming (3D graphics).
You can use bumblebee, like you would on all other distributions:
https://wiki.ubuntu.com/Bumblebee
Or you can use Ubuntu's Nvidia prime utility:
http://askubuntu.com/questions/412452/getting-hybrid-graphics-to-work-nvidia-prime-gt650m
RE: Gamma slider does not work - benit - 4th August 2017
I meant that the Gamma correction slider in system settings does not work. Also not with maui 17.06. Both Nouveau driver as well as NVidia drivers fail.
What is going on?
RE: Gamma slider does not work - leszek - 4th August 2017
In general this should work. There are different modes like greyscale and RGB and such. I tested the greyscale sliders and that work just fine.
Have you maybe forget to hit Apply? Or doesn't it change at all when sliding around?
RE: Gamma slider does not work - benit - 5th August 2017
It does not change at all when sliding around.
RE: Gamma slider does not work - leszek - 5th August 2017
What about the command xgamma -gamma 2.0? Does this work for you?
RE: Gamma slider does not work - benit - 6th August 2017
Code:
$ xgamma -gamma 2.0
-> Red 1.000, Green 1.000, Blue 1.000
<- Red 2.000, Green 2.000, Blue 2.000The numbers change, but not the screen gamma, nothing visible happens
RE: Gamma slider does not work - leszek - 6th August 2017
Very strange then.
If you have the proprietary nvidia driver installed it might be best to try changing the gamma setting with the nvidia provided tools.
Nvidia-xsettings it is called as far as I am aware.
RE: Gamma slider does not work - benit - 7th August 2017
the command "nvidia" does not exist (on my notebook) !?
RE: Gamma slider does not work - leszek - 7th August 2017
There is no command nvidia that is correct.
The nvidia configuration tool is called nvidia-settings.