[Verizon LG G3] roirraW "edor" ehT:
For reference, there are at least two situations resulting in a black screen on the VS985.

This thread only addresses the issue of purposely rebooting the phone either with an app or built in reboot menu resulting in a black screen and requiring pulling the battery OR mashing down the power button for long enough to turn the phone off and then back on, at which point the black screen issue is resolved. Discuss the other black screen issue(s) or any other issue elsewhere, please.

I am not looking for further guessing/speculation in this thread. If you want to do an extended, detailed series of tests and post your results here, you're more than welcome.

For further reference, this problem has been with the VS985 since it came out. It has happened to myself and to others on official LG builds ranging from 10C to 35B. It previously happened for me personally about two times on either 12B, 10B or 11C. On my phone, the LED does not blink while on this black screen and in my experience that only coincides with the OTHER black screen issue not covered in this post. Additionally, sometimes the VS985 can take longer to shutdown when you choose to either shutdown or reboot, during which it displays a black screen and a blinking LED during this shutdown process for as long as a minute or so, that I've noticed when it happens.

I'm done trying to narrow this down for now, probably permanently.

Link to my documentation of my process and test results: https://docs.google.com/spreadsheets/d/1l65S1FcU_ngh5q4VcMzZMOxGbzutZPlUoiPhLswj2YE/edit?usp=sharing

Summary of the results:

Things that definitely do NOT make the black screen reboot issue happen more often than it did on any other stock or stock-based VS985 ROMs, from 10B through 35B:

1. 35B in general (ROMs, stock, rooted, unrooted...).

2. 35B bootstack.

3. F2FS.

4. [MENTION=2941286]xdabbeb[/MENTION] 's kernel that comes with his VS985 v2.0 ROM.

5. Using either the "adrenoidler" or "disableapps" mods for this ROM.

6. I don't think it's Xposed. If it is, it's in combination with something else that's elusive, because I performed 70 reboots in a row with Xposed installed and configured to varying degrees (detailed below in rounds #s 4-11) with no sign of the problem.

7. A huge list of apps that I restored via the built-in LG Backup from my previous installation - the one represented by the first three rounds of testing which did exhibit the issue.

8. Restoring system data via the built-in LG Backup, admittedly taken from an LG Backup from a few weeks previous.

9. I don't think it's the 3MinitBattery mod posted in [MENTION=2941286]xdabbeb[/MENTION] 's VS985 v2.0 ROM thread, since in the last several rounds of testing, I was able to reproduce the problem and I hadn't flashed that mod.

I did something at this point in testing which is commonly done by lots of people including myself, (edit for clarity) and after doing this, the problem started happening again in rounds 12-14. I won't report what it was because I can't determine what, precise part of it would cause the problem - *IF* it in fact had anything to do with it. I won't lead anything else to be rumored.

I just had the black screen reboot issue rebooting from TWRP after restoring a nandroid.

This further eliminates:

10. Any ROM.

11. Any kernel.

12. Charging the phone for long periods of time.

I've rebooted 140 times documented and probably at least another 20 or 40 or so undocumented.