yashsingh1/xdaforums huggingface dataset:
[LG G Pad X 8.0 Guides, News, & Discussion] googlephone:
The cpu inside is 64 bit but LG is too lazy to put 64 bit android on it. So our device has 32 bit os with a 64 bit cpu.

It's not simple to convert 32 bit os to 64 bit os because we also need to modify bootloader and other proprietary parts to 64 bit, which is nearly impossible.

Our device doesn't have a dedicated smart cover sensor, but have one regular magnet field sensor.

A dedicated smart cover sensor is some kind of a magnet sensor at a designed location and sensitivity.

The problem may be the developers are trying to use the regular magnet field sensor as the smart cover sensor, but it's not perfect due to non-ideal sensor location and sensitivity.
[LG G Pad X 8.0 Guides, News, & Discussion] Munns86:
Know of any way to disable it?
[LG G Pad X 8.0 Guides, News, & Discussion] Lost Dog:
I've been running this since last night. So far it's been great. One issue I've had is not being able to use the built in file explorer to copy/paste internal and sdcard storage. Even trying to run it as root give errors. That's the only real issue I've had.

The magnetic sensor is VERY sensitive and the screen shuts off easily with a magnetic case (even with the case open).
[LG G Pad X 8.0 Guides, News, & Discussion] painter_:
Back when this device was first rooted I unlocked the boot loader and installed TWRP for some reason I cannot get my device to boot into recovery. When I try from ADB the device reboots and shows the normal "this device cannot be checked for corruption" screen and hangs. I tried to flash the newer version of TWRP with the same result. Any suggestions of what else to try?
[LG G Pad X 8.0 Guides, News, & Discussion] Munns86:
Strange. Have you tried booting into recovery via the hardware buttons?

Turn the power off.

Press and hold the Power + Volume Down key on the right side of the device until the LG logo is displayed.

Briefly release only the Power key when the LG logo is displayed.

Quickly press and hold the Power key again.

Release all keys when the Factory reset screen is displayed.

Press the Volume keys to highlight Yes, and then the Power key to select factory reset.

Press the Volume keys to highlight Yes, then the Power key to start the reset.
[LG G Pad X 8.0 Guides, News, & Discussion] Ravoz88:
Hey could anyone help me out? Back when I rooted this tablet at the end of November, I installed the TWRP version from the TWRP thread. I don't know what it is about this version, but I have never been able to mount or format external SD cards or OTG USB's.

I'm trying to flash the new LineageOS, but I can't because I can't get the table to friggen mount my external storage!

Anyone have any ideas? Months ago someone said I needed to point TWRP to the mount point, but I have no idea how to do this...I've searched through all of the settings and options.

Thanks!
[LG G Pad X 8.0 Guides, News, & Discussion] Munns86:
What error do you get when you try and mount?
[LG G Pad X 8.0 Guides, News, & Discussion] Ravoz88:
I can't even get that far. I am unable to even click on the external drives. TWRP sees them, but I can't select them.

If I try and wipe, format or partition them it returns error 2. I'm sure because they are not mounted, so they are unavailable, and it fails.

I've tried formating in my computer with ext4 and fat32. Still won't mount.

I may try and flash TWRP again. Since I sounds like not everyone has this issue. I have seen at least 2 others that have though.

EDIT: apparently selecting "install" option allows me to then select the OTG, and it mounts...Not in mount, not in wipe, not in partition, and not in file manager. But as soon as I choose the install option it mounts. Boy I could have saved a lot of time if I new about this quirk haha.

---------- Post added at 08:50 PM ---------- Previous post was at 08:18 PM ----------

Flashing LineageOS tonight, my v521 crashes instantly at reboot. The screen flashes and then shuts off immediately.

Fortunately I made a nandroid backup way back when I first rooted it back in November.

Not sure what went wrong. I flashed it again to make sure, and it crashes.
[LG G Pad X 8.0 Guides, News, & Discussion] painter_:
Nope, No Go. I am able to get to the factory wipe screen and go through the motions but the screen freezes and the device is not wiped. I think that I need to use the LG tool and return to stock and start over.
[LG G Pad X 8.0 Guides, News, & Discussion] Munns86:
Do you do a wipe all data when flashing?

Did you come from 6.0 or 7.0?

EDIT: I see from your post in a different thread you were on 6.0
[LG G Pad X 8.0 Guides, News, & Discussion] ralphwiggum1:
I was on stock 7.0. Used dirtycow to root and install TWRP. TWRP did not mount data and other partitions, so I wasn't able to flash lineageos. Used flashify to flash lineageos and opengapps. Flashed ok, then when starting to boot, saw enter pin to decrypt (except I didn't create a pin, so didn't have it). I was finally able to factory reset and wipe data after playing around in TWRP. Now, I still can't boot into lineageos.. it boots straight into TWRP everytime. Tried reflashing and wiping, still same. Any suggestions?

I tried the nightly. I will retry with experimental.
[LG G Pad X 8.0 Guides, News, & Discussion] Amd4life:
You can use adb sideload to install your lineage zip.

Place the zip in your adb folder on your C drive.

While in Twrp connect to your computer, then follow the directions detailed in the original post, instead of supersu, change your command to reflect the name of your lineage zip file in your adb folder .

Worked for me. On first boot, put superuser on your main SD card (you will have to enable developer options and allow the new adb key) and then change the USB connection to file transfer instead of USB charge only) ,

boot back into twrp and flash the supersu zip that is on your Main SD card for root.

The current Twrp 3.0.2.0 does not work with 7.1.1 to see the other drives(external, other etc.).

We will need an update to 3.0.2.2 at some point for those on 7.0 like the V500 has available.
[LG G Pad X 8.0 Guides, News, & Discussion] HighRidas:
Issue has been cleared on the regression tracker so the next build should be fixed.
[LG G Pad X 8.0 Guides, News, & Discussion] HighRidas:
New build is up on the official site and is confirmed working
[LG G Pad X 8.0 Guides, News, & Discussion] runderekrun:
Thanks for all you help with this.
[LG G Pad X 8.0 Guides, News, & Discussion] HighRidas:
coming soon. v521 has been Resurrected
[LG G Pad X 8.0 Guides, News, & Discussion] Xerloq:
Does it work through the auto update?
[LG G Pad X 8.0 Guides, News, & Discussion] HighRidas:
Yes it indeed does however the issue with Developer options freezing is still present. But, it boots.

Here is the new thread for v521-Resurrection-Remix-N-v5-8-x-OMS-LG-G-Tab-X-8.0

for all of us that have been waiting FOREVER
[LG G Pad X 8.0 Guides, News, & Discussion] Xerloq:
Thanks. I need USB debug so I guess I'll be with waiting.
[LG G Pad X 8.0 Guides, News, & Discussion] mirthanoid:
I built Lineage from source with this patch from Gerrit applied, and Developer options now works!

review.lineageos.org/#/c/168336/
[LG G Pad X 8.0 Guides, News, & Discussion] runderekrun:
Hell yeah RR
[LG G Pad X 8.0 Guides, News, & Discussion] mirthanoid:
That patch was just merged less than an hour ago; the next official build should have working Developer Options.
[LG G Pad X 8.0 Guides, News, & Discussion] patt2k:
So you guys are saying I can ressurect my V521? :D I like the tablet for music etc. But hate one thing how hard it is to boot into recovery mode lol. So tomorrow I'm gonna play around and finally flash something that works :)
[LG G Pad X 8.0 Guides, News, & Discussion] Munns86:
Yep! At this point I really see no reason not to flash this. Very stable and just better in every way. There could be issues with apps like Netflix with their news of blocking rooted devices.
[LG G Pad X 8.0 Guides, News, & Discussion] Xerloq:
Any ideas why the auto update won't work? I DLed the nightly, but the tablet reboots into recovery, but doesn't update. What am I missing?
[LG G Pad X 8.0 Guides, News, & Discussion] mirthanoid:
OTA update is not working yet. In TWRP you can install the downloaded ROM from /data/data/org.lineageos.updater/app_updates and then run the following commands:

dd if=/dev/zero of=/dev/block/bootdevice/by-name/fota
dd if=/dev/zero of=/dev/block/bootdevice/by-name/misc

I keep a small script with that under /sdcard/Download which I can quickly run from the TWRP terminal.
[LG G Pad X 8.0 Guides, News, & Discussion] ralphwiggum1:
The problem needing the commands is only if you use the built in update feature or run an update script from Android (like flashify). If you reboot into recovery and manually flash, you don't need to run the commands.

I have the extra power options menu enabled in Developer Options to easily boot into recovery without additional root.
[LG G Pad X 8.0 Guides, News, & Discussion] Xerloq:
I'm a noob with TWRP scripts. Mind sharing?
[LG G Pad X 8.0 Guides, News, & Discussion] mirthanoid:
As was mentioned before, running those dd commands is only necessary if the update was attempted, and the tablet keeps booting into TWRP. By having those commands in a small script on the tablet, it's easier to remedy the situation so that the tablet can boot up normally without having to type in lengthy commands using the TWRP terminal or adb.

A script is just a simple text file containing the commands you want to run, with the execute permissions set. For example, I call that script ffm (fix fota & misc). You can use an editor on your computer to create that file, and then copy it to your tablet using adb push. Alternatively you can create that file on the tablet.

Boot into TWRP, and connect using adb:

adb shell

In adb run the following command (copy and paste):

echo -e 'dd if=/dev/zero of=/dev/block/bootdevice/by-name/fota\ndd if=/dev/zero of=/dev/block/bootdevice/by-name/misc' >/sdcard/Download/ffm

The above will create the script. Next the execute permission needs to be set; still in adb run:

chmod 755 /sdcard/Download/ffm

The next time the tablet is stuck booting into TWRP after an update attempt, in TWRP tap Advanced then Terminal, and type in:

/sdcard/Download/ffm

After that tap home and Reboot.
[LG G Pad X 8.0 Guides, News, & Discussion] Munns86:
For user wondering why we haven't gotten last weeks update it looks like our build has been "Suspended until wiki instructions are updated". Not sure who handles those.

- https://lineageos.org/Changelog-11/
[LG G Pad X 8.0 Guides, News, & Discussion] mirthanoid:
Looking in Gerrit, the wiki got updated, and the commit which disabled the build got reverted, so we will likely see a new build in a few days.
[LG G Pad X 8.0 Guides, News, & Discussion] mirthanoid:
I was wrong. There is still no new build today. :( Not sure what else needs to happen before the build is re-enabled.
[LG G Pad X 8.0 Guides, News, & Discussion] hmx13:
Need help guys

Updated to lineage 14.1 but it locked the root, adb doesn´t work and i can´t install twrp or install gapps throw adb, anyone can help or knows the solution.
[LG G Pad X 8.0 Guides, News, & Discussion] Munns86:
Strange and still nothing as of today
[LG G Pad X 8.0 Guides, News, & Discussion] xxhaimbondxx:
try now.
[LG G Pad X 8.0 Guides, News, & Discussion] jotade:
iRDa blaster is not working. Do you know if there is a way to use infrared with LineageOS? Thanks
[LG G Pad X 8.0 Guides, News, & Discussion] lindercannon:
I just tried installing the current 14.1 nightly build (10/6/2017) and unfortunately, now my tablet continues to boot straight into TWRP and will not boot into the OS. I can get into fastboot and TWRP.

Does anyone know what I can do to reset things or flash to stock to get rid of this issue?
[LG G Pad X 8.0 Guides, News, & Discussion] jbloggs2008:
its a bug with TWRP. See solution here: https://xdaforums.com/lg-g-pad-83/help/v521-bootloop-upgrading-to-twrp-3-1-1-0-t3655105
[LG G Pad X 8.0 Guides, News, & Discussion] jhford:
Root.zip

Does anyone have a link? I can't find it. Just flash root.zip with TWRP?

Thanks
[LG G Pad X 8.0 Guides, News, & Discussion] xxhaimbondxx:
I've flashed twrp 3.1.0.0 img onto recovery. Now instead of entering into twrp, it enters into fastboot. How do I change it back?
[LG G Pad X 8.0 Guides, News, & Discussion] Flyinace2000:
Ran through this last night. All working well on LineageOS 14.1. Tablet runs much smother now. Not bad for a free tablet that is 2 years old!
[LG G Pad X 8.0 Guides, News, & Discussion] MicroMod777:
Same here, got free also. Stock Android was very sluggish. I use my Tablet to fly my DJI Spark drone, and it was having very bad video delays. Hopefully this Lineage will be better.
[LG G Pad X 8.0 Guides, News, & Discussion] xxhaimbondxx:
Is there a chance we get Pie on this?
[LG G Pad X 8.0 Guides, News, & Discussion] steven.rn:
Is the Lineage OS 14.1 file still available?

Hi folks,

Followed the OP's link, and no joy; the rom isn't there... (yah, I know I'm way behind the curve:silly:)

Anyone have this or a pointer to a good rom I can flash on this TMO v521?
[LG G Pad X 8.0 Guides, News, & Discussion] eric93se:
Search for lineageos microg
[LG G Pad X 8.0 Guides, News, & Discussion] camoway:
sure bro I still have it around my PC somewhere.

---------- Post added at 05:49 AM ---------- Previous post was at 05:41 AM ----------

This is the last Build I have had it on mine for many months no issues. good stuff

https://archive.org/details/lineage-14.1-20181124-nightly-v521-signed
[LG G Pad X 8.0 Guides, News, & Discussion] steven.rn:
Thanks much, Camoway :highfive:

I'd given up on finding it. First and second time through, all I ended up with was the original ROM and a boot sequence that works, but always gives me a start up screen that tells at me to relock the bootloader :p
[LG G Pad X 8.0 Guides, News, & Discussion] steven.rn:
That did the trick. It was a real pain getting all the files together, and then getting the LGUP/Uppercut combo to work. The logcat step never did work/conclude- when it hung for a long time, I just unplugged/replugged the usb cord, then the next steps led to success. I installed your lineage zip file from TWRP (Oh, thanks much bro!)

If anyone's stuck for any of the files, let me know, I'm keeping the kit and kaboodle of all that's needed on my Google drive.
[LG G Pad X 8.0 Guides, News, & Discussion] camoway:
The realm is a little quiet so you might need to go into mixer. XML and change the speaker from 76 to 92. So much more usable volume
[LG G Pad X 8.0 Guides, News, & Discussion] guliver365:
Is there a recent updated version for TWRP ?
[LG G Pad X 8.0 Guides, News, & Discussion] JrueAMG:
Unofficial build lineage-14.1-20191024-UNOFFICIAL-v521

i'm new so i can't post links to my google drive. let me know if you want this.
[LG G Pad X 8.0 Guides, News, & Discussion] thatguy222:
If you could DM me with the link, I can get it posted on your behalf.
[LG G Pad X 8.0 Guides, News, & Discussion] Inductive Soul:
I still have my own backup/tutorial for this rom & root/procedure...

You can get my backup copy of this at: This Link
[LG G Pad X 8.0 Guides, News, & Discussion] JrueAMG:
https://drive.google.com/open?id=1gw5CvNnwpKIluRjkODn9YNRmIBM7UH7t i just created these builds today

---------- Post added at 02:11 AM ---------- Previous post was at 02:11 AM ----------

good stuff!
[LG G Pad X 8.0 Guides, News, & Discussion] Kamex009:
[MENTION=10243249]JrueAMG[/MENTION] , Thanks in advance!! What OS is this build based on ?
[LG G Pad X 8.0 Guides, News, & Discussion] Kamex009:
Finally got to install LineageOS

[MENTION=10243249]JrueAMG[/MENTION] I was able to install the ROM that you provided and it's great!! thank you so much :)
[LG G Pad X 8.0 Guides, News, & Discussion] jotade:
Hello. Is the infrared working? And also the OTG?

I did try and Infrared is not working... Does anyone can help me how to fix that? Thanks
[LG G Pad X 8.0 Guides, News, & Discussion] Kamex009:
[MENTION=4270636]jotade[/MENTION]

Unfortunately I didn't test the infrared, there's a big chance it won't work, never saw it referenced by any one either working or not, or I didn't notice.

by the way did you try different APPs ?
[LG G Pad X 8.0 Guides, News, & Discussion] jotade:
Hi Yes. I try some apps. I had before different devices with AOSP roms and they have a working infrared. If you can fix it It will be the best ROM :)
[LG G Pad X 8.0 Guides, News, & Discussion] abced123:
how much better/faster is this ROM than stock ROM? mine is stock/debloated and it becomes quite sluggish now
[LG G Pad X 8.0 Guides, News, & Discussion] thatguy222:
A lot faster and a thousand times better.
[LG G Pad X 8.0 Guides, News, & Discussion] googlephoneFKLenAsh:
Not faster speed, less stable/more hiccups, shorter battery life (battery drops suddenly) and losing some features like IR blaster.

If you run benchmark like antutu, it will get fake higher scores of 95,000 on LOS because the LOS kernel is cheating by manipulating the imaging processing score by 47,000.

Don't know why the developer tried to manipulate benchmark scores.

On stock rom I got around 60,000, which is typical for snapdragon 617 cpu.

So if you subtract the fake/manipulated imaging processing score portion, you got only around 50,000-55,000 on LOS, which is underperforming than stock rom.

On my other devices, LOS always performes better than stock and V521 is the only exception. Part of the reason must be we only had one developer for this device in the past and none right now.

Another reason is that LOS on v521 only uses the four big CPU cores, while the stock rom uses all 8 cores with big/little. So you downgrade to a quad core tablet if you use LOS and lose the performance and power efficiency using big/little octa-core architecture CPU.

On stock rom, I can get 8-10 hours screen on time, mainly web browsing, but can only get 5-6 hours on LOS with the same usage.

I actually switched back to stock rom.
[LG G Pad X 8.0 Guides, News, & Discussion] abced123:
You save me time :) guess I have to move on with another tab
[LG G Pad X 8.0 Guides, News, & Discussion] Munns86:
It's strange that if you go to https://download.lineageos.org/ and go under LG the V521 isn't listed.
[LG G Pad X 8.0 Guides, News, & Discussion] DroidRC1:
https://download.lineageos.org/v521
[LG G Pad X 8.0 Guides, News, & Discussion] Munns86:
Sorry. To clarify: if you to https://download.lineageos.org and under the device list if you pick LG they don't show the v521. It's not an option.
[LG G Pad X 8.0 Guides, News, & Discussion] ralphwiggum1:
Finally got it. Not sure I saw it written before, but did the same way except wiping data first, as shown below:

Start on 7.0 stock.

Root and install TWRP using dirtycow:

https://xdaforums.com/lg-g-pad-83/development/nougat-7-0-v521-guide-to-update-v521-lg-t3533338)

On first boot to TWRP, go to Wipe and click the Wipe Data button to reformat the data partition to ext4.

Flash lineageos (adb sideload or just copy it over and flash with TWRP) and opengapps (ARM for 7.1)

My issue was resolved with #3, as I was just installing LineageOS, then when booting it found /data corrupted and would go back to TWRP. Then I couldn't leave TWRP.. Every boot would go back to TWRP, even reflashing. I couldn't find what the "flag" was that was triggering it. So after a couple restores with LGUP (and Uppercut) to stock 7.0, this finally got me to boot into Lineage OS.. where I was greeted by a qualcomm.timeservice has quit, right on boot. Going to try it out now!
[LG G Pad X 8.0 Guides, News, & Discussion] viperware:
Maybe it is incomplete. I am running it now and the extra button is not mapped yet. May be just be for testing purposes for now.
[LG G Pad X 8.0 Guides, News, & Discussion] jsuresh:
I have the same problem, no matter what I do, it is going to twrp. I am trying to get it to stock with Uppercut but it is not detecting the tablet. How did you get it to work?
[LG G Pad X 8.0 Guides, News, & Discussion] ralphwiggum1:
You need to be in download mode. Power off the tablet (restart > power off in TWRP). Then hold volume up when powering on. Now you can restore with uppercut/LG Up.
[LG G Pad X 8.0 Guides, News, & Discussion] jsuresh:
yeah, just found that out. Restoring now using "UPGRADE" option in LGUP, lets see what happens.

---------- Post added at 10:46 PM ---------- Previous post was at 10:44 PM ----------

did you do anything different 2nd time to get Lineage OS boot up?
[LG G Pad X 8.0 Guides, News, & Discussion] ralphwiggum1:
Once back in TWRP Wipe > Wipe Data before flashing Lineage OS. This will make the data partition unecrypted/mountable.
[LG G Pad X 8.0 Guides, News, & Discussion] jsuresh:
Thats exactly what I did before and it didn't work. I guess i will try again. Thanks for your help.
[LG G Pad X 8.0 Guides, News, & Discussion] Ravoz88:
I installed Lineage several times on my v521, after the first install I couldn't get root to work correctly. My method for installing Lineage is that I wipe everything on the tablet. In advanced wipe, I wipe Dalvik/ART cach, Cache, data, Internal and System. Then flash the Lineage Zip. I didn't run into any problems doing it this way. Obviously you wouldn't retain personal data doing this, but it sounds like you are already losing any personal data by flashing stock first.

I just made sure that I always had a Nandroid backup handy if I ran into problems. Then I could quickly start over fresh.

The only way I could get Lineage to boot was after I had upgraded to the stock Nougat first.
[LG G Pad X 8.0 Guides, News, & Discussion] Munns86:
Did you get anywhere on this? I think i'm having the same issue. interesting enough I had no issues flashing the first nightly in TWPR and have been using it since Saturday. I noticed there was a new nightly last night so I tried to flash that. Now i'm stuck where you are I think. The tablet will only boot into TWPR no matter how many times I wipe and re-flash either nightlies.
[LG G Pad X 8.0 Guides, News, & Discussion] jsuresh:
wipe Dalvik/ART cach, Cache, data, Internal and System. This suggestion above worked for me finally.
[LG G Pad X 8.0 Guides, News, & Discussion] Munns86:
Shoot! This does not want to work for me. The ROM seems to flash fine but then after I reboot it just goes back into recovery.

Do you just have the ROM stored on an external SD card?
[LG G Pad X 8.0 Guides, News, & Discussion] jsuresh:
No, i am doing adb sideload.

---------- Post added at 09:18 AM ---------- Previous post was at 08:39 AM ----------

Follow these steps:

Upgrade to stock 7.0

Use Dirtycow to root and install TWRP

DO NOT install SuperSU yet

On first boot to TWRP, Wipe Data first(this will format data partition as ext4) and then go to Advanced Wipe and select Dalvik/ART cach, Cache, Data, Internal and System.

adb sideload Lineage OS and opengapps

reboot, go through the setup (initial boot takes lot of time)

after all setup, reboot into recovery and adb sideload SuperSU

hopefully these steps work. I was able to upgrade 2 tablets using this process.
[LG G Pad X 8.0 Guides, News, & Discussion] Munns86:
I will wait a bit to give this a try to get my battery charged. Not sure if it's the battery being low (around 15 % now) but in the process of sideloading the ROM it seems get around 75% and stop though I get no error but when I go to reboot it says "no OS installed" . Which nightly are you installing? 1/26 or 2/1?
[LG G Pad X 8.0 Guides, News, & Discussion] jsuresh:
2/1 nightly.

Ignore that "No OS installed" message in twrp. I got that as well but when you reboot, it boots fine.
[LG G Pad X 8.0 Guides, News, & Discussion] Munns86:
I did ignore it :) but still just rebooted in to recovery. I will let it charge up a bit and try your steps to a T and see what happens.