On Thu, Nov 11, 2021 at 10:16:18AM +0300, Riza Dindir wrote: > Hello Ken > > I am using gop, and a framebuffer. When i try to use the xrandr, it says > "gamma is set to 0", or "failed to get size of gamma for output default". > > I can set the gamma uaing xgamma and in the xorg.conf file. > > Riza > No idea what gop is - google suggests it's the american republican party ;-)
Did you search for that "failed to get" message ? Google gives me a lot of different matches, some for failing to correctly add a new mode, others for running with nvidia drivers or in virtualbox, or with out of date manufacturer's video driver. https://askubuntu.com/questions/441040/failed-to-get-size-of-gamma-for-output-default-when-trying-to-add-new-screen-res For an ubuntu-based kernel with at-the-time recent intel graphics hardware, adding a boot arg to enable alpha-quality intel support. https://itectec.com/ubuntu/ubuntu-xrandr-failed-to-get-size-of-gamma-for-output-default-for-mdp-type-connection/ In short, finding the answer really does seem to depend on what hardware and distro are in use. I'm assuming you're using some sort of linux. ĸen -- Vetinari smiled. "Can you keep a secret, Mister Lipwig?" "Oh, yes, sir. I've kept lots." "Capital. And the point is, so can I. You do not need to know.”