Hello Ken. On Fri, Nov 12, 2021 at 12:56 AM Ken Moffat <zarniwh...@ntlworld.com> wrote: > > 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 ;-)
:D That is the graphics output protocol. My radeon device is not recognized by the kernel (netbsd) and I am using a framebuffer. > > 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. What I am trying to do is reduce the brightness of the LCD on my laptop. Since I am using a framebuffer, I thought that I could do that with the gamma values. But xrandr fails with a message relating to the gamma values being 0 or not set. > > 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.” Regards, Riza
