Mostly I am using Fedora 25 64-bit GNU/Linux, and gamma seems to work fine on 1.2.0.2 - Master/Next/Experimental are all working here.
1. MSI Radeon R7 260x OC2 Edition
2. Driver: 3.0 Mesa 13.0.2
3. Renderer: Gallium 0.4 on AMD BONAIRE (DRM 2.46.0 / 4.8.15-300.fc25.x86_64, LLVM 3.8.0) (X.Org)
4. Gamma works fine in all of the games I play.
5. On a dual-boot system here (Fedora 25/Windows 7), gamma works irregardless of the Operating System.
Note that Fedora 25 uses Wayland instead of xorg by default now. But I have reverted mine, because the Wayland version was giving me all kinds of tearing issues.
1. MSI Radeon R7 260x OC2 Edition
2. Driver: 3.0 Mesa 13.0.2
3. Renderer: Gallium 0.4 on AMD BONAIRE (DRM 2.46.0 / 4.8.15-300.fc25.x86_64, LLVM 3.8.0) (X.Org)
4. Gamma works fine in all of the games I play.
5. On a dual-boot system here (Fedora 25/Windows 7), gamma works irregardless of the Operating System.
Note that Fedora 25 uses Wayland instead of xorg by default now. But I have reverted mine, because the Wayland version was giving me all kinds of tearing issues.