[HTC Sensation] scanferr:
I am having a really weird issue with these. So, sometimes all is working fine and then suddenly (after a reboot or even after unlocking the screen) the capacitive lights stop working (or don't go off at all if I unlock again) and the auto brightness does not work. I restart, take battery out, power on and nothing happens. Tried different ROMS (ARHD, DarkSense, stock one), different kernels (Sebastian, Faux, Sultan's) and the same happens. Everything is working fine and then suddenly it just doesn't. Even today I wiped everything on my phone, flashed ARHD with faux's kernel that it includes and all was awesome. Installed my apps, my games, restored the save games with titanium and was good. Rebooted, took battery out, power on again and all was fine. Did some benchmark, all good. Then I did a nandroid just in case it fails again. After that, I played a bit on the phone and copied some albums to sdcard I was impressed how it was lasting so long without everything to break again. Then I rebooted and everything started again. I rebooted and after the screen went off (not completely, I could see some light on it still) the capacitive lights stayed on for like 15s or so. After they went off, I took battery off and powered on the phone and guess what? Capacitive lights don't work neither does auto brightness. Formatted sdcard, fixed permissions, rebooted and nothing once again.

I shall say that capacitive lights work all the time while in recovery mode.

I am running out of options to try and to see what is wrong here. Here goes some options:

1- Battery. My battery does not last long at all. It's really weak and if it lasts like 8h with normal/low using is too much. I plan in buying a Anker battery to improve this.

2- Software. Is this possible? Because I tried with 3 different ROM's, 3 different kernels and all happens. Unlikely.

3- Hardware. Light sensor broken + capacitive lights or some connection? Really unlikely, imo. If it was like that they would be always off and not power on when on recovery mode. Plus, sometimes after I fix permissions/format sdcard all works good.

4- Sdcard. Perhaps it's faulty? I have 2 more but can't try them now, just on friday.

5- USB cable? No idea...

6- ???????

7- You name it.

PS: While writing this post I rebooted into recovery, formated sdcard and fixed sdcard filesystem with the phone just on battery. Ater that, took battery off, power on and nothing. Then, I took battery off, rebooted into recovery, connect the phone to the power socket to charge, formated sdcard, fixed card filesystem, fixed permissions, took battery off, reboot and...gues what. It is working. All is working good. This is a ****ed up issue, I guess and I think all points to battery, for some reason. Any help here? Thank you! :)

EDIT: Just copied some music albums again to sdcard and after that switched off the phone. Took battery off, powered on and everything stopped working again. This while on battery. Power phone off again, connected to the power socket and turned it on again. Does not work. Disconnected the cable, rebooted into recovery and formated sdcard. Rebooted and...it works. What the hell? Next: copied an album to phone. Disconnected it properly in Windows and waited on phone for sdcard to be mounted. Reboot while on battery...and it works.

Any clue?