yashsingh1/xdaforums huggingface dataset:
[LG V20 Guides, News, & Discussion] partyman66:
Yeah... Tried this last week. Coming from Oreo on my H910 everything worked except fingerprint. Went to Nougat and I couldn't get any version of LOS to boot up after the install without kernel panicking due to modem firmware. I'm going to try again when I get a chance to in a few days.
[LG V20 Guides, News, & Discussion] Wilro1999:
It's been a while since I went through this with my H910 - I use to get the kernel panic's on boot as well, the only solution was to flash the vs995 modem on my device & everything has worked fine (I flashed the A-O image for nougat & then the vs995's modem - should be able to search the forum to find it) - I remember having to flash the permissiver zip to disable selinux after a couple of rough upgrades in the past (flash permissiver_v5.zip, boot & run fp/bt/camera, reboot & then re-flash the same los version to re-enable selinux), but I haven't had to do that for months ;) - I guess I've been lucky since all my bt devices have been working flawlessly with both my h910 & h990n devices (2 x soundbars, 2 x different handsfree car devices & my Turtle Beach headset - mostly bt 4 devices, but one of them is bt 5.0 capable ;)

Oh, both my phones don't have gapps, are not rooted, & I only use them for phone calls (mostly H/H+, 4G here is really poor at best)

Hope this helps!
[LG V20 Guides, News, & Discussion] G U C C I:
Which version of LOS are you trying to install?
[LG V20 Guides, News, & Discussion] partyman66:
I want 17.1. It worked fine except for Fingerprint scanner when installed over a stock based Oreo ROM..then I went back to Nougat and LOS 15.1 and 16.0 unofficial as well as 17.1 official all kernel crashed due to modem issues. I went back to a backup of my stock Oreo system after that just to get it in a usable state.
[LG V20 Guides, News, & Discussion] G U C C I:
You could try going from 15.1 to 16.0 to 17.1 and see if that works... You would flash them all in succession in TWRP.
[LG V20 Guides, News, & Discussion] partyman66:
Tried that too. Same thing.
[LG V20 Guides, News, & Discussion] partyman66:
Just in case anyone is looking for the download for this, the thread referring to the process is gone so here's a direct link to the download.

US99610p-Oreo-Downgrade_Nougat_Firmware.zip | by i95swervin for V20

Download GApps, Roms, Kernels, Themes, Firmware, and more. Free file hosting for all Android developers.

androidfilehost.com
[LG V20 Guides, News, & Discussion] partyman66:
Thanks for the info. I might back up my Oreo H910A modem and try this today with AO Nougat ROM but Oreo modem layered over it since everything seemed to work fine except fingerprint when done that way and the newer modem is probably better. I'll post results back here. I also dug up a post from way back where someone else did something similar on an H910A using the US996 downgrade zip with his old modem layered on top.
[LG V20 Guides, News, & Discussion] ghardashyan:
Played with this ROM further, here are the bugs I noticed:

1. As already mentioned, 5Ghz tethering doesn't work. It's almost a killer feature to me, because 2.4Ghz tethering affects bluetooth connection stability (and not only of the bt devices connected to the phone, but also of the all nearby devices);

2. Volume controls don't seem to affect the amplifier gain, rather they mere change the digital signal volume (keeping the amp on the highest gain). The problem with this approach is distorted audio on low volumes. To reproduce, simply play any video on the lowest volume.

3. There are certainly issues with Camera framework. Apps sometimes lose the connection with the camera, especially whenever rapidly closing-opening those apps.

Unexpected positives found:

1. Bluetooth absolute volume (where the phone volume syncs with the volume of connected device) works! Even on the stock ROMs this feature is broken (or deliberately removed). This is crucial for wireless earphones with no physical volume controls on them.

2. Again, the performance of the phone is so much better than on stock.

cc @x86cpu @npjohnson @aleasto
[LG V20 Guides, News, & Discussion] Lillievela:
Does anyone here know anything about sms and calls not working on the vs995? Everytime ive tried it i dont have either of those working,
[LG V20 Guides, News, & Discussion] partyman66:
Probably wrong modems. Could also be that your APN needs to be manually set for your provider's network.
[LG V20 Guides, News, & Discussion] partyman66:
Has anyone tried installing Xposed on this yet?
[LG V20 Guides, News, & Discussion] megamorphg:
Would really love a pinned message on this official-est thread with all our best tips after installing LineageOS and GAPS like what modem, kernel, etc. to use. And any other handy you guys suggest especially to get that fingerprint sensor and stock camera app.

Meanwhile, using this basically as an awesome mobile hotspot with my giant 10kmAh battery.
[LG V20 Guides, News, & Discussion] Xenetre:
I've flashed the rom and I seem to not have both my speaker and microphone working. Everything else is fine though. I'm using an h990ds
[LG V20 Guides, News, & Discussion] trymeout:
1. Can you encrypt the phone storage and the SD card?

2. Can LineageOS update itself on the phone easily like any other Android update?

3. Can you restore your LineageOS to factory without having to reflash your phone?
[LG V20 Guides, News, & Discussion] phunkybeam:
I cannot confirm this, I also have an LG V20 H990DS, and everything about the sound works for me.

Have only now installed the update because of this message.

---

I tend to find Lineageos super cool, but what hasn't changed since Cyogenmod back then on a Motorola Milestone until today is that the camera doesn't work properly.

This is what bothers me about Lineageos on my H990DS:

1. bootloader message that the system will not boot. This delays the boot process by at least 20 seconds.

2. the Lineageos camera app and all other camera apps crash on certain interactions. Mostly when switching from main camera to selfie camera or switching from photo mode to video mode. It is then always necessary to restart the device. In addition, the photo and video quality is slightly worse than with the stockrom.

3. during some interactions the device freezes, it takes forever to get the device to restart if you do not remove the battery.

It's a shame that good hardware has an expiration date due to software. Sure, you can use the device with these few limitations, but the camera in particular is always important to me.

So, sooner or later, I will probably have to buy a new device, probably a Xiaomi device, maybe Poco X3, because the hardware is only good as long as there are good updates, I am no longer willing to spend a lot of money on it. Although the camera in the devices is usually not outstanding :-(
[LG V20 Guides, News, & Discussion] sajadzarepour:
I couldn't install update by tapping on install button in updater, it goes to twrp but didn't install update.

Maybe i must update twrp recovery?
[LG V20 Guides, News, & Discussion] megamorphg:
ROM was working just fine but after creating a TWRP backup it seems to be stuck in a bootloop (Loading apps and then OS restarts) when I boot to system.

Sadly even restoring the backup is giving me issues with restoring the system.

I tried Magisking before boot to troubleshoot but same issue.

Is there some protocol I am not following?
[LG V20 Guides, News, & Discussion] partyman66:
I've also yet to be able to get a TWRP recovery working with Lineage 17 on my AT&T LG V20. I always get these TAR error messages while in the middle of restoring the SYSTEM partition. I've tried using a few different versions of TWRP and all yield the same error message about 80% of the way through the restore process. I did read somewhere online where someone else encountered the same message and they had luck in restoring it by first wiping internal SD Card, but that didn't fix the problem with failed TWRP restores of Lineage images for me on my H910A.
[LG V20 Guides, News, & Discussion] megamorphg:
I spent weeks happily setting things up only to get messed up by merely creating an encrypted TWRP recovery. I didn't actually do anything other than create the encrypted backup in TWRP...

To troubleshoot, I also tried as you did, using TWRP 3.2.1 which originally succeeded as well as formatting everything and flashing the latest lineage. At this point I think I may have to start from scratch and install the KDZ.

Edit: Fixed it by doing the following:

1. Flash latest version of TWRP 3.5

2. Flash H91820h

3. Flash LOS 17.1

4. Flash GAAPS (optional)

5. Flash Magisk v21

I guess I learned my lesson: don't use encryption on TWRP. It doesn't know how to restore such backups yet. Reported it on GitHub.

Still have the fingerprint issue and stock camera sucking but this is better than pure H91820h.
[LG V20 Guides, News, & Discussion] partyman66:
Did you install your LOS 17 over early version Nougat firmware? I was able to get my fingerprint scanner working that way. I had to downgrade to H91010m firmware for mine to work and then installed LOS 15.1 unofficial followed by 16.0 and then LOS 17.1 official. Didn't need to flash permissive.
[LG V20 Guides, News, & Discussion] megamorphg:
Fingerprint loss isn't a big deal but the first time around I did format and then flash H91810u >> H91820h >> LOS 17.1 and still had fingerprint issues. Does flashing LOS 15.1 unofficial matter?

Also, excuse the noob question--what is flash permissive?
[LG V20 Guides, News, & Discussion] pavik62:
megamorphg

flash H91810u >> los 15.1 >> los 16, flash Permissiver_v5.zip >> los 17.1, flash Permissiver_v5.zip
[LG V20 Guides, News, & Discussion] partyman66:
Fingerprint scanner not working was kinda a big deal to me. I don't like having to physically push the button every time i turn on the phone because that will eventually wear out that button and then the phone is useless since i won't be able to get into recovery or turn it on from a powered-off state. You can always use double-tap-to-wake (knock-on), but i don't like that and assume there is some small energy waste in keeping that sensor active all the time as the phone is idle.

I can't say 100% whether flashing 15.1 first matters, but i ran into massive problems trying to get this all to work while spending a solid 2-3 days trying various things and just took the safest route possible while keeping notes along the way and trying different things. I'm on a different hardware version than you too (h910a) so my firmware won't be identical to yours and it's possible it might have mattered for me and not you or vice versa.

Permissiver is an APK you flash in recovery that allows you to to run Selinux with enforcing disabled. Some people have reported success in being able to get their fingerprint scanner working by setting it to permissive temporarily just to get the scanner detected and initialized, and then they set it back to the enforcing and i guess it continues to work for most of them. As I mentioned, i didn't have to do that on my phone.

I might try mixing and matching various firmware pieces from Oreo in on my phone to see if that has any impact on how my phone runs. First up is the modems from Oreo which I exported using dd from the terminal in TWRP before i installed LOS 17.1. I also have a backup of the modems that I am currently using in case it causes issues. Hopefully the size of the modems partition is the same and won't cause problems at all if it's a different size and i try bouncing back and forth between them.
[LG V20 Guides, News, & Discussion] hua2501:
Finally gave up, I flash rooted stock rom to return my h910 oreo stock. the phone is smooth and battery last longer. The camera never stuck.
[LG V20 Guides, News, & Discussion] megamorphg:
Ahh the holy grail. This should be pinned if it works. Where can I download LOS 15 and 16? Can't find it on the official LOS page.

Can I just flash them all in one chain or does the comma mean I have to boot to system for the sensor to kick in? (And then to recovery to continue upgrades.)

Also do I need a de-permissiver at the end? (not sure if that's a thing)
[LG V20 Guides, News, & Discussion] megamorphg:
Sounds like fun. Should definitely post your findings for your model here in case it helps someone.

You're right... double-tap would probably take some battery. I wonder how much because I don't notice anything. But then again, I'm using 10000 mAh battery so I don't notice anything (I mainly plan to use V20 as a secondary phone as hotspot if necessary). It also pairs nicely with the double-tap-status bar to lock.

I really don't mind no sensor it but would be great to be able to fix that and have the original camera app.
[LG V20 Guides, News, & Discussion] pavik62:
[QUOTE = "megamorphg, post: 84278637, member: 4662726"]

запятая означает, что мне нужно загрузить систему, чтобы датчик сработал? (А затем в восстановление, чтобы продолжить обновления.)

Также мне нужен де-разрешитель в конце? (не уверен, что это так)

[/ QUOTE]

https://xdaforums.com/t/rom-h910-h9...unofficial-lineageos-17-1-for-lg-v20.4010893/ - Это все ром. Прошить с перезагрузкой. Permissiver_v5.zip Прошивать всегда и после обновления прошивки. Если вы используете MagiskManager, то модуль SeLinux + Permissive + (Magisk)
[LG V20 Guides, News, & Discussion] SeongGino:
Question:

It's nice having the Hi-Fi DAC as a quick settings toggle, but... what does it do, exactly? Unlike in stock, turning the switch on in LOS seems to force high impedence mode? The volume becomes significantly greater, too much for my sensitive IEMs, and thus I hear low volume distortion with it enabled.

So is LOS using 'correct' output to the Quad DAC all the time, regardless of the switch being used? Is it only a High Impedence mode toggle? Is LOS incapable of automatically detecting high impedence headphones? Does all of this suddenly negate the need for this mod? And would using Gamma kernel throw a wrench into things?

Sorry if it sounds like I'm uber confused - 'cuz I kinda am right now, since I'm used to having to flash the modified values to make the DAC work in AOSP ROMs.
[LG V20 Guides, News, & Discussion] partyman66:
I tried running the H910AOreo modems tonight on my LineageOS 17 ROM and it caused a green screen crash during boot, so i had to go back to my h910a10m modem and it booted up and ran fine again. I then put in just the modem from h91010r and the system came up and ran fine with Lineage OS 17.1, so I'm going to continue using that newer Nougat modem from 10r with all of the other 10m firmware.

I dug around a lot last night and couldn't find a place where I can get the last avaailable Nougat firmware for H910A (version 10U, which is the same as what's in the 10V package) to see if those also work with LOS 17.1. All of the links to that stuff are dead and the firmware isn't included in SuperRom or Alpha-Omega. If anyone has a firmware dump of h91010u or 10v or even just the modes.img file, I would be ever thankful if you could post it up somewhere.

On another note, I can't seem to find any GCAM version\config combos that work well on this ROM though. Every GCAM version seems to be somewhat unstable and has a literally unusable front-facing cam. It seems like some of the GCAMS take really nice rear pictures (when it's not crashing in the process), but the selfie cam literally looks like something that you would have taken on a $30 kids toy digital camera back in the late 90's.

I need to give Gamma kernel for Pie a shot too next and maybe try some upgraded graphics drivers for our chipset.
[LG V20 Guides, News, & Discussion] BloodyIron:
Hey so I just flashed my LG v20 H918 with LineageOS 17.1 ( lineage-17.1-20210107-nightly-h918-signed.zip ), with Magisk and the Gamma Kernel. I was previously on OTA 7.1.

Now, my phone won't lock when I flip the cover shut, or wake when I open it. I'm using the 3rd party "officially sanctioned" flip cover with I think a magnet in it.

The motion sensor works (with apps that do that), however I use my hand to do it, not the flip cover.

So this means I'll flip the cover shut and the phone will stay unlocked, responding to touch inputs, when I really don't want it to. Or not wake when I flip it open. This functionality I had in the OTA 7.1 ROM (rooted or unrooted), and I really love it.

What is needed to get this going? Do I need to do something? Or does this need to get backed into a build?

My attempts to google-fu this topic has not gone anywhere productive I'm afraid. It looks like I may be the first person asking this. :( Any help is appreciated! Thanks!
[LG V20 Guides, News, & Discussion] megamorphg:
Did it work fine on stock? I recently got my H918 to work fine on 17.1 with fingerprint sensors and things. Don't have a flip case to test with since my mom took it (will be back in 2 weeks).

Try what I did:

1. Unlock bootloader, downgrade using LGUP and H91810p_00_0717.kdz file. Flash TWRP via FWUL script to download. Flash TWRP 3.5 (latest) to recovery and download.

2. Wipe everything except External SD. Format.

3. Flash following in chain: H91810u > Permissiver_v5.zip > LOS 17.1 > GAPPS 10 (optional) > Magisk 21 > Permissiver_v5.zip

Edit: complete instructions
[LG V20 Guides, News, & Discussion] BloodyIron:
Yeah it did work on stock ROM. What's permissiver? And yeah, I updated TWRP to latest before switching from OTA 7.1 to LineageOS 17.1
[LG V20 Guides, News, & Discussion] SeongGino:
I keep seeing mentions of Permissiver, but is it really necessary? And for that matter, a lot of stuff about progressively installing/updating LOS from 15.1 through to 17.1 seems... awfully aggressive.

Not that it matters a whole lot for me - my only goal was to use the V20 exclusively as a budget-DAP - but out of curiosity I tried my sensor and it wasn't recognizing any fingerprints. I think this was because I was previously using a Stock 20h-based system.

What I did was clear out everything (except I/E-storage), flash Super Rom (based on H918-10p), clear Cache/Data, and dirty flash Lineage 17.1 and all its associated packages (including Gamma, dunno if that matters) over that. Even after a few power cycles and a full chargeup, my current fingerprint works like a snap and I can still register a new one without issue.
[LG V20 Guides, News, & Discussion] sajadzarepour:
I installed latest build 2021 01 17

Everything is ok, but fingerprint doesn't work in applock apps like applock fingerprint .
[LG V20 Guides, News, & Discussion] BloodyIron:
Anyone have any ideas about the flip case for the v20 on LineageOS 17.1? :( I seem to be the only person on the planet talking about it, even though it's an advertised feature for the device.
[LG V20 Guides, News, & Discussion] speccygc:
is possible install it on Lg V20 F800L
[LG V20 Guides, News, & Discussion] princedede:
So guys. I can't seem to get Netflix working on los 18.1 but it's working on los 17.1

Only old apps from 2017 work. So far no one seems to know a workaround
[LG V20 Guides, News, & Discussion] AlexOD42:
H990DS user here running official 17.1. I seem to get occasional SoC modem crashes. It's hard to replicate reliably, but seems to happen when moving between bands. Generally, although voice/data work ok, it's often erratically switching bands with poor reception.

I'm interested to know what modem firmware everyone is using? I originally flashed H990N10b_00_OPEN_HK_DS_OP_1017.kdz in order to root and have now read out the modem partition using dd. It has a timestamp of 2016-10-17 15:09:30 which matches 10b. What's really weird is that cracking open the KDZ gives 10e. I'm beginning to wonder if the files don't match their names on lg-firmwares.com!

Anyway, would some kind person be able to share their recommended modem firmware for Lineage?

Thanks!
[LG V20 Guides, News, & Discussion] sajadzarepour:
anyone has this problem? please test and report to developers
[LG V20 Guides, News, & Discussion] POPAREZ:
Is there any way to make the image on the second screen not shown?
[LG V20 Guides, News, & Discussion] pavik62:
[QUOTE = "POPAREZ, сообщение: 84326427, участник: 11404893"]

Есть ли способ сделать так, чтобы изображение на втором экране не отображалось?

[/ QUOTE]

For developers - Cut-out on the screen - Hide.
[LG V20 Guides, News, & Discussion] AlexOD42:
I'll answer my own question on the modem firmware in case it helps others!

Firstly, it seems the extracted DZ filenames don't match the KDZ filenames. The version timestamps do match so this seems something to ignore.

Using LG_Firmware_Extract_v1.2.6.1, I've extracted just the modem binary from H990N10q_00_OPEN_HK_DS_OP_1215 and flashed this manually using fastboot flash modem filename. So far, I haven't had a SoC crash - fingers crossed!

TLDR - if you originally downgraded your H990N to 10b in order to get root before installing Lineage, try flashing the modem from 10q afterwards for maximum stability.
[LG V20 Guides, News, & Discussion] BloodyIron:
Upgraded to LineageOS nightly from Jan 21 and it broke the Exchange Services on my device for accounts that require admin control. Like, completely unusable. Unsure if I should roll back or not, but many attempts to try and fix it (clearing cache, removing each account individually, etc) have not turned up success.

The only Exchange ActiveSync account I can add is one that does not require admin control. So this is appears completely broken for corporate E-Mail at this time (at least in my sample size of one).

Argh :/
[LG V20 Guides, News, & Discussion] sajadzarepour:
Do you also have trouble recognizing fingerprints in locked apps? build20210117 and 20210121 have this problem but build 20210110 Not.
[LG V20 Guides, News, & Discussion] thchipmunk:
I'm experiencing an issue that I believe started two updates ago, but not exactly sure, sorry.

My vibration has just stopped. I checked all of the settings I could find related to vibration and it seems to be enabled but the vibrator just doesn't run. I tried clearing cache and nothing. I've searched the forums and have not found anything that was helpful.

Any help is appreciated!
[LG V20 Guides, News, & Discussion] BloodyIron:
@sajadzarepour

I do not use biometric authentication, so I don't have anything useful to say on that. Sorry!
[LG V20 Guides, News, & Discussion] DonVasaschi:
Installed lineage 17.1 official over the weekend and have been testing out the various features and settings and so far it's been fantastic. My only issue with it was that the camera quality 👎🏾👎🏾👎🏾but I solved it by installing a third party camera (GCam_7.3.018_Urnyx05-v2.1_Wichaya_V2.5) and now I'm quite content (even though I don't take much pictures).

My next issue is IR Blaster, I'm not sure if it's a custom rom thing but mine doesn't work tried using Sure remote and Universal Galaxy remote but no dice. Can one of the dev explain to me if it's that because I'm on custom rom i won't get the privilege of using my ir blaster or is it only specific to Lineage os, or if there's something that I should have done or flashed or a setting that I must enable in developer options.

I'm hoping that I'll be able to keep lineage and somehow be able to use my ir blaster even if it's by way of using a mod.
[LG V20 Guides, News, & Discussion] mehsme:
Could be possible your vibration motor is dead, not unheard of, especially when "dirtysanta" causes forever vibration on boot. I had it happen on my spare.

I can only get the IR blaster to consistently work if I use/flash gamma kernel after updating. Unsure what's missing from LOS kernels.
[LG V20 Guides, News, & Discussion] BloodyIron:
Okay Exchange Services is also unreliable now for a mailbox I use without admin requirements. I'm not going to update to "nightlies" (weeklies?) as frequent any more. Really hope the next update fixes it, or I'm just going to wipe and roll back. I really thought in 2021 we would have stopped breaking Exchange Services, but I guess not... ARGH
[LG V20 Guides, News, & Discussion] DonVasaschi:
What version of gamma kernel are you using along with what ir blaster app?