yashsingh1/xdaforums huggingface dataset:
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Redline:
Quick & Dirty Testing

Okay, so.

I did a full TWRP backup, flashed the 16.0 build for my H990DS, the openGAPPS AROMA zip for 9.0 (importing all the same options I did when first installing 15.1) and the latest Magisk beta 17.3, following the installation instructions to the letter.

This was a "DIRTY" flash over 15.1 (it's not really dirty when doing it how Lineage does its patching but I digress).

No custom kernel, no Xposed (after flashing the xposed uninstaller). Just the ROM, GAPPS, Magisk and everything my phone already had on it.

I previously had Gamma kernel, Xposed & Magisk.

The device boots (takes about 10 mins the first time) and gets to the lock screen, and after a few seconds it shows "shutting down" when I'm in the middle of entering my PIN, turns off and boots back into recovery.

I flashed the Magisk uninstaller, rebooted and tried again with the same result. I can see on the second screen for a few seconds that WiFi/Cell and Bluetooth are all working, and my watch pops up that it's connected to my V20 before it shuts off.

I'm not willing to completely wipe and test in case something gets wiped that a TWRP backup has missed. Going to try to pull any logs I can and upload them.

Edit: After a few more attemps including a battery pull, it booted and is currently in the system updating apps.

Edit 2: Just did it again while I was taking screenshots. Was in the system for maybe 3-4 minutes. Going to try to install Magisk and get root for logs.

Edit 2.5: Formatted /system and flashed the ROM clean, same issue

Edit 3: [MENTION=2881807]x86cpu[/MENTION] I managed to get a couple straight "adb shell dmesg" in between the device booting to the lock-screen and the shut-down occuring. I also got a kmsg from TWRP in case it's of any use. There's a lot of failures for stuff to opening and in the dmesg logs you can see where the shutdown occurs so maybe you'll be able to tell what's causing it.

Logs are here and I'm going to revert to my 15.1 setup backup for now.

I hope this helps! Do let me know if you need me to do the process again and manually pull any specific log files using TWRP.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] ki11aprime:
Up and running on h918p clean flash from RR

How to enable swipe gestures?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] H0L1D4Y:
Got this on my H910 version and its working really good so far.. You're a BEAST
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] x86cpu:
I checked logs, nothing out of the ordinary (for this beta build), most failures are ok. Obviously, something caused the shutdown. I had the same issue initially on my us996, but did get past it. I'm guessing something with the H990 is causing it, which might be the dual sim.

If you want to enable the loggy.sh, you need to remount system rw, then edit /vendor/bin/loggy.sh an uncomment the two logcat and dmesg lines. It'll then catch a dmesg and full logcat from boot. Those might help more so.

In twrp even...

mount /system

vi /system/vendor/bin/loggy.sh (You'll need to understand vi at this point).

It should look like this: (right now the logcat and dmesg are commented out).

#!/system/bin/sh
# loggy.sh.

#_date=`date +%F_%H-%M-%S`
logcat -b all -f /cache/logcat_${_date}.txt &
dmesg -w > /cache/kmsg_${_date}.txt &

Save..

umount /system

Then after boot check for the files in /cache in TWRP.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] aminjomaa13:
Are IR blaster/fm radio tested? and are there areas where lineage os 16 adds to 15.1 in terms of non-stock features?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] esalce:
This is a Beta build. I would imagine that FM tuner and IR blasters are not working yey
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Capt_rusty:
It's under System -> Gestures.

So I flashed onto my H918-10p, was encrypted under 15.1 previously. Wasn't able to get past the password initially, just kept rebooting into recovery like Redline, and once I did it seems it also corrupted my data, I got a warning about my password being correct but the data being corrupt, and was prompted to reset my phone. I tried just about everything, but had to format my data and clear the encryption, as even TWRP was no longer able to mount system (unknown error 150). Reflashed after formatting, and now up and running, currently charging my phone to try and encrypt again. Can't thank you enough for getting this ROM out so quick, this is awesome!

Edit: Tried encrypting, unfortunately it failed. Rebooted to recovery while encrypting, and then had to reformat and reflash.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Messaibi:
Wonderful! can't believe you got LineageOS 16 on beta this soon, great job.

Will flashing this ROM after being on stock Oreo breaks fingerprint scanner just how LineageOS 15.1 does it? or is it fine? if it does the same I should flash Stock nougat first before flashing this one.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] me2151:
Sounds exactly like Rescue Party.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Grin59:
Everything is working well. Had to use kernel adiutor for the screen retention. Phone was pretty hot so that didn't help. Anyways

It's working amazing so thank you :) I'll update with any bugs if I find any.

Update: SELinux is not enforcing, and I don't think I can use privacy guard without it. We don't have exposed so I can't use xprivacyula so anyone got any help on how to fix it?

Update 2: fingerprint issue is there but deletes itself completely after a reboot but isn't an issue that much, don't mind it.

Also, ambient display isn't working. On the up side it's basically stable enough to use as a daily driver and I plan to. So happy with this, just need a new screen now :D

Also the brightness slider could use some work. Doesn't turn up the brightness till about half way up

---------- Post added at 01:57 AM ---------- Previous post was at 01:54 AM ----------

The ir scanner works in gamma. I doubt the fm radio will ever work unless some dev can work it
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Messaibi:
Doesn't it have the RGB sliders in the display settings like previous LineageOS versions?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Capt_rusty:
That's what permissive mode is
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] nickthaskater:
You posted issues that are literally in the OP. They aren't news and clearly x86 is aware of them given he posted them...
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Redline:
Yeah. No. Don't do that. Especially since you literally quoted the OP. Didn't even take the time to type them out yourself.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] TripOG:
i guess you didnt read the follow up, but whatever i guess no one reads anymore.

yep that was the joke, i guess it was lost on yall.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] hendrixal12:
I'm still a little new to all of this, I have installed ROMs for awhile but new to the whole troubleshooting side. Was reading through the forum and saw someone installed akt and couldn't figure out what that was cause when I looked it up it was for a different phone. It looked like it could help the overheating. Any way someone can send me a link to the right place to be for this device.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Redline:
I got the joke. But it wasn't funny.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Redline:
It's for the One plus something if I recall correctly, but it and the V20 both use the same SoC so it works on the V20 too.

It's called AKT Profiles if you wanna look it up, I've used it in the past on stock and it works well.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] hendrixal12:
OK yep that's the phone I saw when I pulled it up. I didn't wanna install something that wasn't gonna work and potentially brick my phone. I appreciate it!
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] TripOG:
i laughed but ill apologize, it just seems like people needed to lighten up here. everyone keeps posting the same question and then some random person responds with the same read the thread advise just like in every other forum post on the world wide web.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] SebTech33:
I just tryed this rom on h990ds and is working ish, if i have the sim card in it just turns off on the lock screen. it's nice and smooth when the sim card is out. fingerprint works, but get removed after reboot.

have no problem running gamma kernel ss build 2018-09-13-h990

bluetooth works like a charm, and the quality/loudness is better than how it was previously on 15.1

did update from lineage 15.1

camera does not work, tryed 5 drifferent cameras and gcam ports

maby the modem or vendor is causing the reboot to recovery when you boot into the os? everything else seems to work

dumb question, wheres the android p navbar?

and yes i have read OP, but i'll tell my experience and problems.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Redline:
That's generally how a forum works. You read a post to get the information, and if someone didn't read the post, then you remind them to or link them to it.

Search before posting is an XDA rule but if we enforced that like we do the others, it'd be a lot less of a happy place.

Everyone here is doing the same thing, we're all on the train that x86 conducts, we're all waiting for the next stop. That's all any of us can do.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Redline:
It's probably the modem, knowing how much of a child the H990DS likes to be about its modem.

But then again it also might not be, since I can use it for about 20 minutes if it's plugged into my PC (albeit with the appalling screen retention) before it powers off.

Have looked through many lines of kernel messages up to and when it happens, and I can't see anything of note that sticks out to be. The fact that it doesn't happen if there's not a SIM in there tells me the modem is probably crashing or something and Android doesn't know what to do, so it powers off.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] SebTech33:
It would seem so. I have been using it for a few hours now and its really stable. Nothing is crashing, but camera does not work. Probably the modem on the h990ds being a little b#$%, since it only powers off when the sim card is recognized.. Been running it with and without the gamma kernel as build and both give me the same result. So if it is the kernel both have the same problem. I can try to give you some logs but I don't completely know how? Logcat or?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] emrezal19:
Can't flash the ROM it give me error can't update system image please help me!
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Redline:
It's not the kernel, since they both have the issue. It's more than likely something to do with RIL, it was an issue on the first few LOS 15.1 builds for the H990/DS but got ironed out shortly after.

A logcat would probably help, and I'd PM it to x86 directly. Kernel logs/dmesg probably less so since it's probably not a kernel problem.

Perhaps Omar might be able to help x86 work on it after he pokes around LOS 16.x to get Gamma going for it.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Redline:
Gonna need a bit more than that. A copy of TWRPs log would be helpful, for starters.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] emrezal19:
https://drive.google.com/file/d/10x85LTZAXBEKQohsNa-7HWBhUCFW9qL2/view?usp=drivesdk here bro
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Redline:
Try re-downloading the ROM zip?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] SebTech33:
new problem... but can be my phone. the phone won't recognize the sim is plugged in now...
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] emrezal19:
I try to re download the rom zip but it still the same
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] ki11aprime:
Did you flash the x86cpu.zip first?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jinkerz9430:
Then yes. try to wipe cache and dalvik and flashing magisk. If it takes more than 10 minutes then it wont boot up.

Also you want to make sure that you wipe the data to remove any remnants of previous roms that might not work with stock roms thus causing the hang on the boot screen.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] ghet2rockuu:
i did that now it just keeps robooting llol
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jinkerz9430:
I still don't trust the twrp backup you made :eek: ... wipe everything, flash a stock ROM, then flash magisk. Don't restore the backup just yet. See if it boots up. If it does boots up then there is something going on with that backup.

Maybe your modem is different from the one of the stock rom you have on your twrp back up. If it is that will also cause bootloop on the phone.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] ghet2rockuu:
ok i got it working . i flashed the stock of the version my back up is then i went back and restored, .guess coming back from 8.1 u need to downgrade firmware but couldnt find one, . can i just flash the boot img from the stock or i have to flash the whole stock rom? for next time or maybe there is a firmware for going back to stock 8.0 but cant find one

---------- Post added at 02:42 AM ---------- Previous post was at 02:38 AM ----------

the back up was from the same stock . yea had to go back this rom was sweet but on h918 camera wasn't working on intial install camera app was installed but kept crashing . kept getting android process fc , did a factory wipe camera app disaapeared no other cam app would work sms stock kept crashing . used textra sms was working fine ... stock rooted is fine for now . lg v20 officially gets pie in 3rd qrt this year
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jinkerz9430:
you could flash the boot.img yes. but sometimes the modem also needs to be flashed too. I wouldnt risk it. it is better to flash the whole thing. and also get Titanium backup , it does a better job at backing up apps and their data than TWRP does.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] jl10101:
In play store you can go to YouTube and on the top right menu button you can untick auto update
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] muckc:
Does anyone have this white navigation bar bug or it's just me, asking before reflash the ROM.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] EnterTHEvoiD:
Don't suffer from any bugs really and never came across that one before, sorry

H990ds
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] muckc:
Thanks, I flashed LOS 16 on top of RR 6, maybe that is the cause, already factory reset via TWRP, maybe start over from stock will help.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Kevinlucas:
Same here to just give some feedback. i also have not had the issue you mentioned. its most probably cause of you flashing los 16 on top of rr6.

using a h990ds with los 16 and gamma kernel 5.0.1
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] DaCHeF36:
Thank you for this info. I am hoping that I was rushing to a conclusion before. Loading aokp the phone has been stable for the last day. It did experience the issue on boot, but as you stated it has only needed to be activated once. Before, I assumed that seeing the issue appear meant the behavior was the same as before. I think you're right; that it has to do with the firmware version. Having now come from a stock 8.1 based ROM, I think that might be the key. Thank you very much for your help, and I will confirm once I give it some more time.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] EnterTHEvoiD:
I should add that latest Los 16 build 20190702 with gamma kernel 5.0.1 has the best battery life I've experienced on this phone. I've got a Perfine 4100mah and just had a bit more than 6h sot and 1 day and 15h of battery life xD.

I always have flight mode on overnight with WiFi on.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Vs995Child:
Ok, well I hope it evens itself out and you get it how you want it. I've noticed that no two phones are alike ( even if they are the same, lol) and you may just have to play around with it until you get the exact results you want. I've noticed on some models, people swear they have phenomenal results using the gamma kernel, me personally, i cant tell a big difference. So it's all depends on how your particular phone wants to play the game. ? Good luck!!!
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Grin59:
Can anyone else on a H918 tell me how many notifications dots they're able to have?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] DaCHeF36:
Well, I am unsure where to go next. The issue reappeared after a couple of days of stability (on aokp 8.1). A slew of text messages came in after a call was placed this morning. It stinks that I seem to be the only one experiencing this "no SMS connection" intermittent issue on the vs995. It sure seems software related with the given workaround, but like I said, lost as to where to go next.

Does anyone have any other suggestions? Thanks.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Vs995Child:
well no, i also went through that once. But i got in a habit of making a test call daily. (Outside of my normal calling i may do). And its the same for Los 16, gotta make that test call after flashing. You can use a random number (i have walmart in my favorite area, so all i do is just press call wait for it to connect and hang up). But if you dont mind that, both are really good roms. And the latest Los 16 has been pretty stable( well for the vs995's anyways)
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] warwagon19792:
I have a vs995 and while I'm not on 16, but on 15.1 I was experiencing that issue when we went camping at the end of May, the only time I've had that issue. I still have to make a call when rebooting my phone, but while camping in an area with not the best reception, I did run into the no SMS message until I made a call. But it kept happening. Got the point where I put my sim back into my spare stock vs995 I brought along just in case, no issues with that phone. :) Once I got back home I haven't had the issue.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] MrBrightside1009:
Made a post about this in the Q&A section, but was recommended to make a post here. Basically, a slew of my phone's features have stopped working. Mobile Data is disabled, and when I re-enable it, it shuts itself back off within a second, the notification area is showing no notifications (but does play the sounds for them), the fingerprint sensor has stopped working, apps I had disabled are now re-enabled, and the task manager on the navigation bar doesn't work, it flashes when I tap it, but it doesn't bring anything up.

I have the H918 running LOS16-20190702 with Gamma Kernel 5.0.1 and Magisk. Only modules I was running was Viper4Android, Energized Protection, and BusyBox. I uninstalled all three to see if maybe one of those was my issue, but no avail. Also running the latest Nova Launcher Prime, which I may switch back to Treybucket to see if that solves anything.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] sharon1122:
Does anyone knows a way to force the DAC to "high impedance" mode or turn up the volume without squashing dynamics ? Cause the volume with headphone is super low

Thank you , love this rom!
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] warwagon19792:
Today I Installed lineage 16 (Installed over 15.1) on my vs995 and charged it to 100% and let it sit idle for 1 hour. After 1 hour I was at 99% (though not sure how far into 100% it was. I do use the heck out of privacy guard and attribute my Good idle battery life because of it. Only a slew of apps are allowed to Startup with the phone, run in the background, stay wake and give me notifications.

After playing around with it for a while I noticed the camera performed noticeably better with 16 than with 15.1. Also tried youtube without issue. Fingerprints worked too.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] DaCHeF36:
That's great advice. I spoke to the wife and she forgot she rebooted late last night. It's difficult enough without this! That may be the issue... Monitoring...
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Excudent:
Similar issue on my H910, camera/Fingerprint scanner/sound stopped working. Pretty sure it was after I installed Busybox through Magisk Manager. Gonna reflash everything and see if that fixes anything.

Ohhh, and a sidenote, can anyone with a H910 send me their modem? Tried at least 4 different modems (including the one on this forum), they either craah right away, or when I have a weak 4g connection, no problems on 2g/3g.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] GodMustaine:
Hello ... link to gamma pie 5? I do not know what kind of mental retardation I have that I can not find it :( thanks
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] x86cpu:
https://xdaforums.com/v20/development/kernel-gamma-kernel-t3940119
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] GodMustaine:
Thank you! You are a god. The work you do is really to admire. my respects
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Grin59:
How would you enable fast charging while the screen is on and would there be any danger to doing this?

---------- Post added at 04:42 AM ---------- Previous post was at 04:42 AM ----------

How'd you do this?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] MrPolite:
Cell carrier is able to know I'm tethering! WTF!

Been on 15.1 since it became available but just tried this version. Problem is my cell carrier knew I was tethering. Why would this version be different in that regard?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] N7.X:
I thought it was just me. Now that you mention it, I got a notice from my carrier not long after I moved past 15.1.

I'm curious now if it's due to 16.0 or just a coincidence, but I'm not going back to 15.1 even if it is the ROM - I've gotten used to Pie, and it makes this phone amazing.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] shinoue:
1. using modified thermal-engine-8996.conf

2. thermal mod (changing the thermal paste of the v20)

reduce lag while charging. reduce cpu throttling.

increased charging speed.

no problem so far..
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] mta2:
I've been using this rom for a few months now and I've always had an issue with dropped calls. It would be specific locations when I would be driving the calls would drop. Also text messages are coming in late. I've checked the network settings and it is connected to verizon but when i loose signal, it looks like its switching cell towers. Any suggestions? I have Verizon.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] gr4ffitiktime8@gmail.com:
bump! im still having this issue. its not a hardware issue with my phone nor any of my headphones, its seems like a problem with LOS in general for my phone. How strange, H918 btw running the latest 702 build (July) ANY kind of advice would be highly appreciated! One more thing, is anyone else experiencing this issue also? Or is it just my phone?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] gavilan2010:
Guys is there a way to stop or change the double press power button to star the camera.

Tia

*.A true warrior enters the battle with all his powers at the ready*. LG-H918
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] damadikaz:
settings > system > gestures > jump to camera
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] gavilan2010:
Awsome rom man. Running nice on my device.

Thank you for you work.

*.A true warrior enters the battle with all his powers at the ready*. LG-H918
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] DaCHeF36:
Yeah, I am all good now. The "No SMS Connection" issue is solved on the vs995 by coming from Oreo firmware. I have found the only requirement to be placing a call after a reboot to connect to the network. Otherwise, all is well. Thanks for the help along the way, guys. Thanks for a great ROM, x86.