Why are you deleting a line and from where?
setprop camera2.portability.force_api 1
I deleted the property from build.prop, but that didn't fix anything.
On cm11, when the same problem was encountered, flashing this zip fi...
The new 3.9 version was the solution, but even when it was successfully tested in official Cm12, I had one user had a severe problem using Broken OS, and I can't risk anybody else get into a similar situation unless I can test the kernel myself in...