Dm47021
Android Expert
I've been keeping tabs on you guys for awhile. I had disabled vibration a few months ago for i'm sure the same reasons why you did. You say 'black screens return' I'm guessing it was wakelock, and sleep of death you were experiencing. I noticed them too as well as instability issues with it enabled.
I appreciate your input. I did uses your carbon git tree for reference with 4g/lte. It helped make this phone a little more stable.
As a matter of fact, allot of the f6 device tree's footprint went into the f3 tree's including vibration.
exactly as you described, the sleep of death. ive got it narrowed down to 3 lines in the vibrator/tspdrv.c but never achieved what i needed,
Use what you need, i still have to re do a bunch of sh** because of the ov5693 camera in newer models, have to use jb blobs vs kitkat

however, another dev on my team has built kitkat for the f3, and i dare say hes better than i.
Device: https://github.com/phenomx4/android_device_lge_fx3
Kernel: https://github.com/phenomx4/android_kernel_lge_fx3