So, last week I posted about the Lollipop kernel and how we couldn't merge it yet cause it messed something up for the TMO build: on the new lollipop kernel the 910T users couldnt adjust their brightness . Last night we found out why: it's the bootloader ! As TMO lollipop still isnt out, they were still using the Kitkat modem and bootloader. I then did a test, I flashed back kitkat and then installed the new kernel and I had the same problem ! So that confirmed it indeed was the bootloader. Then Fattire and Slayher came up with a nice fix in the kernel to bypass the problem. So, long story short, we will soon be on the new Lollipop kernel. I don't think you guys will notice a lot of difference but just wanted to point this major change under the hood is coming up.
Also, realizing that the bootloader impacts the ROM made me realize this: ever since I installed Touchwiz I had a feeling that even when going back to CM12 the battery usage had gone worse and the device would get hotter. So, if anyone wants to verify if that's indeed true: make a backup to your sd card of your current Cm12, then flash back the official Samsung KitKat factory image with Odin and then restore the Cm12 image. You can verify in about phone that baseband is ANK4 (that's kitkat). And then see if your battery life is better. I'm not 100% sure, I think I'll try it myself too, but I always had that feeling that ever since I installed Touchwiz Lollipop battery life has become worse ...
But it could also be the combination of Lollipop bootloader + kitkat kernel +blobs (which we are currently using). Maybe if we're soon on everything lollipop (kernel + blobs) it will get better again ... Anyway just wanted to point it out, maybe some people like to experiment with it.
*EDIT* I just did it myself, I flashed back official Kitkat with Odin and restored CM12, my baseband now indeed say ANK4, will see today and tomorrow if battery life has improved
Anyway, this is only for people who like to experiment and know what they're doing. And again, soon we will be on Lollipop kernel + blobs, so if you flash back kitkat you might want to upgrade the bootloader to lollipop soon again either way ..