yashsingh1/xdaforums huggingface dataset:
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] nellatl:
I had it working until I changed the file format to fat but I changed it back to ext4. I can get the superv20 rom to work but I can't get lineoge os 15 to work again for some reason.

Everything seems to install fine when I install through twrp, but when I boot it's stuck on the LG Screen.

I went through the instructions multiple times.

Please help!!!! I would like to use this rom again it's twice as fast as the other roms.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Hzlph:
Format cache, system, data, dalvik, and then install "to-x86cpu.zip", then MAKE SURE to install the correct ROM for your model. Also make sure they are the latest builds (check the dates).

If everything goes by, you should boot to LOS.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] thktanuki:
Hey hey goodish news: got it up and running... Sort of.

Latest version, and have working data and WiFi. Yee.

Can't place calls or send texts, however, even after restoring EFS

[Edit]placing a call gave me an error 16 and patched me through to Sprint tech support who ironed out the kerfuffle. Now my calls, texting, data, WiFi, GPS, etc all appear to work :D
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Migush:
My GPU is laggy on basic stuff too, but for some weird reason games run better, and Daydream VR games run perfect. Before it would stutter and such. I tested going back to a non SS build and the lag in games was present. Now I'm back using the SS builds and it is running games very smoothly. The biggest improvement was with VRidge. Before I just couldn't steam the games to my phone. It would be laggy, jittery and just unplayable. After flashing the SS build there was no problem at all. Here, again, I tried going back to the other builds but using those it started jittering. Now every game is running smoothly.

I just don't seem to understand how displaying something on the second screen would increase the GPU performance in any way.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Hzlph:
I don't think it has much, if any impact. Maybe its more of a kernel optimization thing, because the animations throughout the system only stutter on some specific instances, like moving through the recent apps, or the notifications, but barely anything else.

One point I could prove is when you lock the device. The display shrinks as the animation plays. That might be related to the stuttering.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] thebigcw:
Hello!

I'm loving the ROM, but there's one persistent issue. Others have brought it up, but I was hoping there would be some fix I just haven't noticed.

It's the low volume with speakerphone or other apps that use the microphone like Discord or Facebook Messenger. The microphone volume is low, poor quality, and with feedback. Discord voice works perfectly on the stock rom, but it's unusable on Lineage. Ditto for speaker phone. Any fixes? It's close to a dealbreaker for me since I use Discord all the time and I like being able to use it on the phone.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Hzlph:
Same here with regular, and SS builds. Mic quality is low and its too quiet.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] thebigcw:
Yup, I've also tried it on both builds. No difference. I'm surprised this isn't an issue more people have brought up as it is very annoying. I'm also using the H910.

Hopefully there's a fix in the works
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] nellatl:
This didn't work either. Now when i flash to-x86 i get error: packages.xml not found.

---------- Post added at 05:02 AM ---------- Previous post was at 04:26 AM ----------

For some reason i notice when i flash the lineage os the check box for mount system isn't checked. I know that has something to do with the error because when I flash a rom that works, the system box is checked for mount.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Phoenix591:
to-x86cpu.zip is only needed if dirty flashing from quite old unofficials. Not needed for fresh installs or for recent updates.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] x86cpu:
lineage-15.1-20180814-X86CPUX86CPU-SS

lineage-15.1-20180814-X86CPUX86CPU-SS (Yes, I messed up the naming, didn't feel like rebuilding it all.)

A Second Screen build only.

* Updated from [MENTION=7055541]Zacharee1[/MENTION] and [MENTION=1852121]Blaises[/MENTION] commits. It seems to now include a little surprise that I was not aware of.

* Updated from Lineage sources, this includes August security patches.

* Possible fix on time with no net.

I did find a previous issue with h910, ls997, vs995 and the squashed screen. That should be resolved with this too.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] x86cpu:
I use us996, speakerphone calls work fine for and great for me:

https://xdaforums.com/showpost.php?p=77318589&postcount=1761
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] thebigcw:
Well, it may only be an issue with H910. Regardless, the post you quoted seems to make no difference. Seems to be an issue no matter what microphone you speak into, no matter how loud or quiet. Tested with multiple apps and with speakerphone, tested across both mics it's distorted or inaudible.

EDIT:

Just tested the speakerphone with the mobile and the house phone. If I put the top microphone directly up to my mouth on the H910, it was audible, although feedbacking. If I moved it even an inch away to the normal distance one would use when talking it was completely silent. I'll test with the sound recording on Discord and report back.

Okay, I've tested Discord now. Voice is completely inaudible unless I hold the top microphone directly in front of my mouth, in which case you can hear me, but it's clipping, loud and distorted. If I move the microphone away even an inch or hold it like I usually do while using Discord on the stock ROM, my voice is not audible or barely audible. So, yeah. Something's going wrong here.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Hzlph:
Just updated: AOD is working! Tho, the tactile screen second screen doesn't. We're now just missing a time module to make use of it, and the tactile portion of the second screen working.

So far, nothing to notice aside from that.

The screen still clips back in during the locking animation. I believe this might have to do with the fact that android takes a quick screenshot of the display, but might just be taking such screenshot of the entire display, making it LOOK like its clipping back it, because it doesn't ever clip back in anywhere else.

Edit: AOD never turns off, and there's no option to do so either, so taking note of that too.

Also, for some mysterious reason, there's two "Ambient Display" sections, each with its own settings, but none triggers anything anytime
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Redline:
[MENTION=2881807]x86cpu[/MENTION] [MENTION=5103965]Omar-Avelar[/MENTION] I was unsure which thread to post it in, so I'll post it in here.

I flashed the latest SS LOS build, the Gamma v24 SS version of Gamma Kernel and rebooted, and I have the squashed screen. There's nothing on the actual second screen, just an area where the notifications panel would normally be on the main screen that is now taken up by the "second screen". Would seem this is the same squashed screen issue that other variants have/had. I also installed the Boredsigns app and rebooted, same thing.

I rebooted to TWRP, dirty flashed the latest SS LOS build WITHOUT Gamma kernel and rebooted to system to see if it's a Gamma kernel SS issue. The phone refuses to boot, just sitting on the LOS boot screen looping, but I can press the fingerprint button and feel it vibrate. Have tried with a battery pull and waiting 20 mins.

For now I will go back to my backup of the last Gamma kernel and non-SS LOS builds, but hopefully this helps. Maybe the H990 needs the fix for squashed screen that the other variants have? I remember seeing commits for each variant on the Gerrit but I can't find them anymore.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] xttapolatakettle:
FYI 0814 SS build working on vs995 (no squashed screen). Flashing gamma kernel vs995 SS v24 brings back squashed screen.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] x86cpu:
Well, try my -SS one without Gamma kernel. Not sure why it won't boot.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Redline:
I did.

"I rebooted to TWRP, dirty flashed the latest SS LOS build WITHOUT Gamma kernel and rebooted to system to see if it's a Gamma kernel SS issue. The phone refuses to boot, just sitting on the LOS boot screen looping, but I can press the fingerprint button and feel it vibrate. Have tried with a battery pull and waiting 20 mins". From [MENTION=4856305]xttapolatakettle[/MENTION] 's report above it sounds like a Gamma kernel thing.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] c0mpl3xy:
I would recommend you wipe everything and flash lineage without gamma. It's working for me with second screen working properly
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Redline:
Yeah, there's other people saying it works with the stock kernel but not Gamma. Gamma has a lot of things I use my phone for (not just the KCAL I go on about) so I have to stick with that kernel. x86s builds have always worked perfectly for me so I've no problem going without the second screen for a little longer if it means it works properly once the Gamma dev gets it going.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Hzlph:
It seems the squashed screen comes to some phones. My h910 will get squashed screen without Gamma kernel. So perhaps it is needed for some phones and not for others.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] x86cpu:
I read that. But I was asking before flashing gamma kernel. You can try to wipe system (format), then re-load it to see.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] x86cpu:
On the latest SS ? (0814)? I just posted.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] c0mpl3xy:
So I'm on vs995 carrier unlocked. I'm using at&t. I'd like to be able to get 4g lte, and to my understanding I need the NXTGENPHONE apn to do so. However, whenever I add the apn it disappears. Specifically when I modify the MCC/MNC fields. Any thoughts? Thanks for this great rom

Edit: lte+ is suddenly working. If I check the apns it shows none selected.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Hzlph:
Haven't tested. I flashed it, then immediately flashed Gamma Kernel.

Will try later on the day
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] nellatl:
Installed fine now I'm getting error Platform permission file is invalid., no groups specified in write_external_storage. How do I fiix, please help!!!
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Migush:
It hasn't quite stopped completely. For example when zooming in it stutters (looks like it hangs for a sec: repeates the same few frames for like 4 times) with every camera app. No green flicker but still the stuttering. I have to be lucky to be able to capture an image using the Snapchat camera, because most of the pictures I take are black, and the app somewhat freezes then.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] sajadzare:
I use h990ds . after install gapps (any versions) also nano , get error in google play services and i can not use apps that need google play services, help me,
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] vijaysh80:
[MENTION=2881807]x86cpu[/MENTION] I noticed that there's no mention of VoLTE in the known issues in the OP.

Does that mean that VoLTE is working in the recent builds?

I'm on h990DS btw.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] x86cpu:
Not sure, but you may have needed to flash the to-x86cpu.zip file.

From 1st post "VoLTE and WiFi calling do not work yet".
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] vijaysh80:
Oops.. Sorry.. I wasn't able to spot that line in the OP.. that's why asked.. Thanx for the clarification..
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] d4rkre4per:
I updated my H990DS to the latest lineage-15.1-20180814-X86CPUX86CPU-SS.

I had no issues during flashing (Just did a wipe cache)

Second screen is at the right place (I do not use Gamma Kernel). It works as it should with the screen on, but does not seem to work when off (no taps registering apparently).

Moreover I didn't find any option to disable it completely or at specific times (I'm just a bit worried about battery life), are there any hidden somewhere ?

Thanks again for all the hard work !
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Grillac:
Dirty flashing from US996 latest no-SS to SS build still results in AOSPSignBoard crashing for me. Does anyone else have this issue? Clean flash fixed the issue for me last time, but I don't really want to put myself through another clean flash at the moment.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] clackingcomputer:
If I want to try the second screen build can I just dirty flash?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] StarCommand:
I can't find how to turn off the always on display either. Its using battery like crazy
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] tecknomarc:
Clean flashed lineage-15.1-20180814-X86CPUX86CPU-SS running on my vs995 nice and stable! second screen position is correct, and working well.

Some things i have noticed - the always on second screen does not update when the main screen is off. Also, the second screen rotates and is unreadable when the phone is in landscape mode. As someone else mentioned the second screen does clip into the main display briefly when turning the screen on and off.

Also, the battery seems to drain crazy fast with this new build too, not sure if anyone else has ran into this, but i went from 100% at 10AM to 35% at 4 with light use. those things aside, its running well and the second screen looks great!
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Hzlph:
I'd suggest you twrp it, and depending what phone you have you might need gamma kernel.

If you're already using an standard LOS 15.1 from x86cpu, then you can just upgrade and keep your stuff, and then flash gamma.

---------- Post added at 08:05 PM ---------- Previous post was at 08:03 PM ----------

I don't think there's a way. The backlit will remain on, even if you somehow uninstall LGSignBoard.

We got to wait for a software patch for a proper switch that turns the backlit on and off.

---------- Post added at 08:06 PM ---------- Previous post was at 08:05 PM ----------

Twrp. Don't dirty flash for an upgrade.

---------- Post added at 08:10 PM ---------- Previous post was at 08:06 PM ----------

All the same, though I don't have crazy battery drains so far (and I do use mine a lot more rough, representing a power user's profile).
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] PhillyWonka:
Is your phone going into deep sleep?. Mine isn't
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Grillac:
Excuse my ignorance, but what do you mean by TWRP? I just straight flashed the SS build on top of the regular build using TWRP. Is that not called a dirty flash?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Hzlph:
Excuse my ignorance too. I didn't know people referred to TWRP flashing as dirty flashing.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Phoenix591:
Dirty flashing is flashing something without wiping /data (clearing out all apps etc)

---------- Post added at 05:07 PM ---------- Previous post was at 05:05 PM ----------

Screen squashing means the kernel wasn't set up for second screen.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] tecknomarc:
How can I tell if my phone is going into deep sleep or not?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] x86cpu:
I use s combination of 3C cpu manager in the times and also BBS is the summary.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Migush:
Ugh, I've been typing a very big message since 10 am, turns out it was unnecessary.

Ok, I wiped every partition (System, Data, Internal storage, (Dalvik) Cache) and installed the 0814-SS-H990 build, Stock Gapps and Magisk 16.7 but for some reason Magisk and other safetynet-checkers return "The response is invalid". My camera and GPU issues are gone now.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Hzlph:
Same with magisk, but as a reminder, unless you want to, it is never nessesary to format internal storage
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] x86cpu:
https://twitter.com/topjohnwu/status/1029239685338419200

Known issue.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] johnciaccio:
It feels like the screen voltage is too high causing the color bleeding issue. Anyone know the cause or solution?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Hzlph:
I only have it during night time, when LiveDisplay turns on, making the edges of all side go reddish on a dark scene, which I believe is more of a thing from LG's burn in than it is from the software itself.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Migush:
Edit: Games and especially Daydream apps are still running way better on the 0802-SS-H990 Build than on others. There must be something causing this. Would it help to record the difference? I've switched roms 6 times now. Even set up a whole fresh device and the 'issue' is still present.

---------- Post added at 19:28 ---------- Previous post was at 19:28 ----------

Apparently flashing the kernel after flashing the rom does not work. So flash it before.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Hzlph:
Not for me. H910 will refuse to work with the second display unless the kernel is flashed after the rom
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Migush:
Huh well that's odd :confused:
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Hzlph:
I dunno my Gamma kernel version, all I know it seemingly was compiled on August 11.

Running latest SS build from x86cpu, and would not work unless gamma kernel was installed afterwards (it would work, just with SS clipped in)

---------- Post added at 06:02 PM ---------- Previous post was at 05:55 PM ----------

Hey [MENTION=2881807]x86cpu[/MENTION], Another bug I'd like to point out with the SS build.

Whenever you're on a call, the second screen stays enabled, meaning I end up turning on WiFi and the flash light mandatory.

I suppose it'd be easier to check, when the display if off, to turn entirely the second screen too, when the proximity sensor detects something close enough, like on stock.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Phoenix591:
Flashing it before means you aren't actually using that kernel at all: the kernel in the rom is replacing it.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] TripOG:
Not really sure what the surprise is but on my h910 battery life seems to be improved from the last ss build, before if my phone was at 100% charge when I went to bed I would wake up in about 8 hours to a dead phone.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Migush:
Well, then Gamma Kernel (the SS build) isn't working for me.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Hzlph:
Are you using the latest version? Make sure you do. I'm using the one compiled on August 11, 2018.

And if you are, then try at least two slightly older builds, just in case that specific build is breaking support for your phone.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] tecknomarc:
Looks like it is my phone with wakelocks acting up, not the rom. X86's screenshot of 3C CPU manager shows about 75% as offline; mine is at 86% is at 1.11 GHZ and 0% deep sleep, and better battery stats does not even have deep sleep to display.

Pardon my ignorance, but how do you determine what is keeping the device awake?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] scottyrick:
I ran Better Battery Stats/ Partial Wakelock and found the culprit. It is AOD (Awake On Demand), which is activated in the rom itself. There is no other app that is causing even a minor wakelock.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] tecknomarc:
Can confirm the same, did another clean flash to ensure nothing else was causing the wakelock. Ensured ambient display is 100% off, and same battery drain, and like ScottyRick AOD - Android system is the culprit with 51%.

This is also a great time to recommend the hyperion extended battery, the thing is fantastic and runs for days!
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Hzlph:
Another issue I just spotted.

While on battery saver, if you double tap on the lock screen to go to sleep, the entire display stays "on", with the screen clipped in, and non-responsive (like AOD). I believe this is because the display turns off quicker than the animation (which turns off on battery saver) can do, and so everything ends up on. Its bizzard
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] x86cpu:
Is this the latest Second Screen build?
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] tecknomarc:
Yes sir, I have the version in the post from yesterday.

lineage-15.1-20180814-X86CPUX86CPU-SS
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] x86cpu:
That makes sense battery drain is AOD for that. The second screen builds are experimental, and this one has a AOD on all the time while the main screen is off (like Stock), however it does not go away if the proximity sensor is covered.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] tecknomarc:
I don't know, I think just the back light from the AOD would not drain it so fast - it's probably keeping the phone from deep sleeping is causing the fast drains. LEDs draw very little power.

I'm still pumped to get the display operational!
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Hzlph:
It does not. I had stock AOD on most of the time back when I was in stock, and would not drain as fast. Same deal here.

My only real complaint is when the phone is fast charging. It gets really hot but it charges really fast so I guess its worth the tradeoff
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] x86cpu:
It's most likely wake locks keeping the kernel awake. Plus the AOD of the second screen may not be the same AOD for the rom as AOD is disabled now, as it caused up to 75% more battery drain keeping it on.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Zacharee1:
The current AOD in the second screen builds isn't anything even close to production. It doesn't even work. It sets the backlight to 100/255 and adds a partial wakelock. The wakelock doesn't actually work though, except to prevent device sleep.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] xttapolatakettle:
Yo [MENTION=2881807]x86cpu[/MENTION] ! What was the issue you found with h910, ls997, and vs995 with the squashed screen? If you can elaborate, maybe that can give some insight into why the last SS build of gamma results in squashed screen on these variants. :)
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Phoenix591:
The squashed screen is entirely due to the kernel, in fact, not being configured for the second screen and still having the configuration that disables the second screen set. Just like I've posted several times in this thread.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] Dick Palmer:
Clock works! Yey! Keeps time between reboots!

Even after TWRP / dirty flash!

Surprising how much of a relief that is.

Are F2FS and FM radio on the todo list? Hasn't Lineage worked with F2FS for a couple of years now? Any problem specific to v20?

Most grateful for the slick build :)
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] x86cpu:
Not sure on f2fs. FM is not going to be working.
[LG V20 ROMs, Kernels, Recoveries, & Other Developm] xttapolatakettle:
That doesn't answer my question