I just started using Blender 2.77 on Linux and when I use the cycles realtime rendering it has a yellow tint to it, yet when I use Blender Internal Realtime Rendering, there is no problem, nor is there a problem when I render an image using Cycles, only with realtime rendering
It isn’t with a specific blend otherwise I would’ve posted that .blend, this is with any realtime previewing I do in cycles with Blender 2.77 on Linux Mint 17.3. There isn’t much more I can show besides screenshots. I have tried with other .blend files as well, which means it has to do with Blender, not a specific .blend.
Renders perfectly fine here with 2.77a on Windows 7 Ultimate x64 and ubuntu 14.04.4 LTS x64. So this is not a Blender thing, but must have another reason.
Something’s weird with your screenshots, though. Do the viewport renders and the final (F12) render show the same scene? If so, why do the former have 4 objects / 2 lamps and the latter only 3 objects / 1 lamp?
It has something to do with the Blue Channel, but I’m not sure how to correct it, as you can see in the below screen-shots, Green displays fine, Red displays fine, yet blue turns to black, leading me to believe that the Blue channel is being omitted, yet I have no idea how to fix this problem.
Download Blender 2.77 again and unzip it to a new location. See if the new Blender “install” works. This will ensure that it isn’t some odd preference that was changed. If this doesn’t fix it, the issue is related to your system, not your settings.
Download previous Blender versions and try them. This will determine if the problem is new with Blender 2.77. Try Blender versions before and after the viewport updates. This is to see if your system is having specific issues with certain software features. I don’t know how Blender functions internally, but I suspect that the viewport renderer relies somewhat on the graphics card, unlike the F12 renderer. This would explain why the issue only happens in the viewport. I don’t know why this wouldn’t apply to the BI viewport renderer.
Try it with the GSL shaders in the viewport to see if they have any issues.