yashsingh1/xdaforums huggingface dataset:
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] xatou:
[MENTION=455439]bgcngm[/MENTION] did you fix the auto brightness issue?

Στάλθηκε από το Mi MIX 2S μου χρησιμοποιώντας Tapatalk
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] bgcngm:
No. Send me the fix and I'll apply it. Joking... I'll try one thing that might make it behave less erratic.
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] HK986:
Dear OP

Will this ROM become official？ I love lineage os and I really want the rom canbe suitable for daily use .

Thanks.
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] etoy:
fyi there's no official 16.0 lineage yet, for any device.

polaris will be one of the very first devices going official though, and (fingers crossed) it should happen anytime soon
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] tom65824:
push...

in the meantime i could get yahoo-weather to run..but after reboot it didn't work anymore.

noone using the weather-widged ?
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] OpaWilli:
Slow GPS - in DE us de.pool.ntp.org

I use the rom for about 2 weeks. I love lineageos without gapps. Everything works fine.

Great Work, thank you.

---> except GPS. I took about 10 minutes to sync with sufficient sats.

I changed the timeserver in /systen/vender/etc/gps.conf to the recommended one for Germany: de.pool.ntp.org

Now it takes 10 sec.

Common app fastergps didn't work, seems to use old location of conf file in /system/etc
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] :
What is exactly the cange you've made in this file?

Thanks
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] toxicbrain:
After I flashed LOS 16, I installed some apps. Then I flashed Magisk 18.0. After that I couldn't start Google play store anymore. The app always crashed. I uninstalled the app and reinstalled it. Unfortunately this solution didn't work. The app could not be started and crashed again and again. But if I hide Google play store with Magisk, the app starts without any problems. How can that be?
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] Henkl:
Strange. Which opengapps did you install?
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] toxicbrain:
Indeed. I installed opengapps pico.
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] mlwistrom:
Should be receiving my phone tomorrow so I am getting together all the files to unlock the bootloader and start flashing but I have a few clarifying questions.

Currently installing the google camera from the play store will not function? I saw on pg 29 it was recommended to use the gcam BSG port is that still the best option? I also saw some mention using a port of the pocophone camera app, is that better?

And are there still issues with titanium backup restoring apps?
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] M1chiel:
I installed both the BSG port and the poco cam. In my experience, the first takes better pictures and the latter better videos. So I'd recommend to install both and experiment.
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] toxicbrain:
Which camera apps exactly did you choose? I find so many different versions Thanks for your help.
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] M1chiel:
The latest Polaris on https://github.com/XEonAX/ANXCamera10/releases and https://f.celsoazevedo.com/file/gcamera/MGC_6.1.021_MI8_V2b_plus3.apk
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] Henkl:
Just to be clear..The anx variant should be installed with magisk as a module
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] M1chiel:
Correct!
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] toxicbrain:
Thank you [MENTION=7244877]M1chiel[/MENTION] and [MENTION=2341578]Henkl[/MENTION]!
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] OpaWilli:
I changed in root:/system/vendor/etc/gps.conf

to

NTS_SERVER=de.pool.ntp.org

This is a time server located in Germany where I live
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] :
NTS or NTP?
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] OpaWilli:
Sorry, NTP_SERVER
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] Henkl:
Ntp
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] mlwistrom:
What exactly are the issues with restoring apps with titanium backup? Is it still a problem?
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] vomad:
No, I don't have any problems. Only the first launch of Titanium backup (root version) may hanging, but after rebooting device everything is OK.
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] mlwistrom:
So I unlocked my bootloader last night and had a frenzy of flashing; TWRP, dev ROM, Lineage ROM, Magisk, several modules and apps. Everything is running really well and buttery smooth and I'm very happy so far.

A few issues I've run into:

Tried to install V4A and it just made everything sound like static. I think I read that others had the same issue, not a big deal.

Also Facebook Messenger app cannot access the camera for taking pics or using video chat. Just get a blank screen with an error message "Sorry the camera is not working right now. You might need to close other camera apps you have running." Then the app sorta crashes. Anybody have any recommendations to get this working as I use the video chat feature often?
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] xonzer:
Hi All,

I have a problem with this ROM - when I connect the phone to my VW Golf MK7 unit to charge/access the phone's media, my radio unit shuts down unexpectedly. It only happens with this ROM. Do you have any recommendations for a fix?
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] Ronnie82:
Running this ROM for a few days now, good enough as daily driver. Little buggy on the automatic screen lighting. When I set tot minimum (in bed) it sometimes go to full and back again, that's a little annoying. Thanks so much, I love lineage. :good::good::good:
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] Allexio:
Can't wait for the official release ^^

Thanks so much for the work you put into this, man!
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] DQT_93:
Hi guys,

how exactly do I find out on which firmware version I am? Regarding the note in the OP:

* Required * firmware version must be based on MIUI P-based builds.

Thanks in advance!
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] Gsrzd:
Are you currently on Miui?
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] Dax13:
I have the same problem. It happend after updating V4A. Did you find any solution?

EDIT: I have flashed miuipro_v8.0.0_polaris_8.8.2 and my camera started to work again.

Uff :fingers-crossed:
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] bgcngm:
Yes, don't use it. :silly:
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] DahakePL:
Go into TWRP, mount vendor.

In TWRP remove /vendor/lib/soundfx/libvolumelistener.so and /vendor/lib64/soundfx/libvolumelistener.so

This fixes all static while using Viper
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] DQT_93:
Yes, MIUI Global 10.2. No need to worry then?

EDIT: Because this is what keeps happening to me, am I missing something? And I can't post a screenshot yet due to XDA not allowing new users to post outside links, but here's the message I get when I try to flash this ROM via TWRP 3.2.3 (which is btw official for some days):

Installing zip file '/sdcard/linage-16.0-20190109-UNOFFICIAL-polaris.zip'

Checking for Digest file ...

Skipping Digest check: no Digest file found

ERROR: This package requires firmware from MIUI 8.12.27 developer build or newer. Please upgrade firmware and retry!

Update process ended with ERROR: 7

Error installing zip file '/sdcard/linage-16.0-20190109-UNOFFICIAL-polaris.zip'

Updating partition details ...

... done

Sorry for the inconvenience, I'm quiet a beginner. And thanks in advance!
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] Onawt:
I've written two really lengthy posts about this back on page 46 of this topic: https://xdaforums.com/xiaomi-mi-mix...neageos-16-0-xiaomi-mi-mix-2s-t3862712/page46

It contains all info you'd possibly need.
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] DQT_93:
Works like a charm, thanks for that post! :)
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] hexydec:
I have a similar issue, camera doesn't work in Skype. Following the suggestion to update MIUI, please confirm to flash latest version of MIUI, and then flash LOS and open gapps again, reboot, and I won't lose my settings / have to to a full reinstall?
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] juukeli:
Am I still only one who has got problems with bluetooth audio streaming? Drop outs constantly in my car with this rom, worked just fine with MIUI and with other phones (Mi5, A2 Lite, Note 4 Pro).
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] JC-LGMS:
No problem with Bluetooth headset
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] JC-LGMS:
My proximity sensor doesn't work. When I call someone (or received a call) the screen doesn't turn off automatically.

I tried with an app, AndroSensor, the proximity sensor is blocked on 5cm.

Can someone confirm this bug please ?
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] Henkl:
It was a problem with previous builts. But the last 2 builts don't have this bug anymore.. do you have one of the latest builts?
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] JC-LGMS:
I'm on LOS 2019 01 09
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] aku_baik:
Anyone faced same issue with me? a few other apps also saying cant connect to camera..
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] mlwistrom:
What is miuipro_v8.0.0_polaris_8.8.2? Is that the stock image?
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] Henkl:
yes.. experience the same problem
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] M1chiel:
Did you install the miui camera port?
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] Henkl:
I did... could that be the cause of the problem?
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] taw62:
Yes, this was already discussed in the corresponding thread (page 2) https://xdaforums.com/xiaomi-mi-mix-2s/themes/magisk-miui-camera-port-t3891265. With the MIUI camera port installed, snap doesn't work anymore unless you do some modifications.
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] Henkl:
So...this is.the answer to your question
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] mlwistrom:
So I removed the MIUI camera port and now my Facebook messenger camera works! Thanks!

Any idea why LOS isn't saving my default camera app after startup? I have the gcam port set as my default app to launch when I double press the lock button, but it asks which app to use again after a restart
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] Allexio:
Wireless charging bug? / Voicemail in app missing?

I have two issues currently with this ROM (everything else looks great):

First:

I don't know if this is intended behaviour or not, but when I am listening to music with my USB-C headphones, wireless charging gets disabled automatically. Is that normal?

Second:

I don't have access to in-app voicemail like I have on my mi5 with lineageOS 15.1.

I have the phone app, same as the one on my mi5, latest version, (same SIM card as well, obviously) but I don't have access to in-app voicemail. (ie, the voicemail tab doesn't show up)

did anyone here manage to get it working?
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] daniel_eh:
I have the same problem. The Google dialer doesn't have a voicemail tab and doesn't say anything about visual voice in the settings. The stock dialer has is also missing the tab but has a toggle in the settings. When I toggle it on, it just says visual voicemail isn't activated.

Granted I'm on on Verizon, so I don't know if this affecting all this. Verizon's website isn't helpful for how to activate visual voicemail, it just tells me to do it on my dialer's settings.

Kinda sucks because I don't get any kind of notification if I have a voicemail. I just have to be sure to check my voicemail the old fashioned way if I miss a call.

---------- Post added at 06:46 AM ---------- Previous post was at 06:16 AM ----------

On this update, I've had a small thing with notifications in the top bar. When I get a notification, I see the symbol and pull down the shade, then tap the notification to view it. But the symbol persists in the top bar until I pull the shade down again.

It's a super small thing, everything else has been good for me, other than the inability to schedule specific times for LiveDisplay.
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] man1acc:
Sorry for this kinda dump question. Ill be getting my Mi Mix 2s today (European Rom). Id like to get rid of Miui as fast as possible. It seems like some things confuse me. I have installed various lineage builds without problems and mostly know what to do. But I cant figure out whats the issue with the vendor rom? At this guide on Page 1 it says, that I need P based firmware - Pie? It should could preinstalled with this, shouldnt it?

So any help on the vendor stuff would be very much appreciated!
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] Gsrzd:
The firmware is included in the Miui Rom, so you only have to install the latest Global Developer Miui Rom before flashing Lineage.
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] man1acc:
Does it need to be the global developer? I already downloaded the Xiaomi.eu Global stable - Ill gonny try this first while waiting for my unlock...
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] Gsrzd:
Xiaomi.eu is a Custom Rom and if your Bootloader is still locked you can only install official Roms. Also you should install the Developer Version because it is newer.
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] garfi:
Could someone please compare this rom between pixel experience ?

Just tried Pixel experience vs BaikalOS, I can say BaikalOS is something with extra features of Pixel experience which is great for people who want to use aosp rom (pe) with extra custom settings.

So could you please compare lineageOS vs Pixel experience

thank you
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] M1chiel:
LineageOS is very similar to PE, but it has a number of additional options and features. E.g. I miss the left hand navigation bar option and a music player in PE. LOS also has a privacy guard, but no Gapps. Finally, LOS has the AOSP dialer, clock and messenger, while PE has the more sophisticated Google versions.
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] vomad:
Also LOS has Live display option with standard and sRGB color profile, many additional settings as do not turn on display while charging etc.

My question - when we will see the next build? I crossed my fingers and waiting for month (since 01.09.19) :(
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] :
That's imho the main problem of unofficial builds
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] namgttn123:
Please Help, i flashed this rom from MIUI 8.1.27 and it boot perfectly, but when i went back MIUI and flashed this rom again it forced to TWRP whenever i reboot and i cant flash any rom, when reboot it always boot to twrp, sorry for my bad english, hope you understand !
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] fairfexx:
Hi, is it right that you have only TWRP and no ROM?

I do it with this instruction:

First download Firmware+vendor (https://drive.google.com/drive/folders/1CvhILBk1uDa6YdGr01xDt1m9W478xBl4), ROM (you prefer; https://xdaforums.com/xiaomi-mi-mix-2s/development/custom-rom-central-roms-xiaomi-mi-mix-t3889601) , GApps (https://opengapps.org/) and Magisk (https://xdaforums.com/apps/magisk/official-magisk-v7-universal-systemless-t3473445)

- Then install the firmware+vendor (PIE)

- Then Make FULL WIPE (system/data/dalvik/cache) and FORMAT DATA - YES

- Flash ROM and GApps

- Flash Magisk if you need

- Reeboot
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] vomad:
IF you want to return MIUI (global or developer) you bettter use Xiaomi MiFlash utility and official ROM for fastboot mode. Just download it, unpack twice (.tar then .gz) and flash checking "clean all" flag. That's all, do not panic as "The Hitchhiker's Guide to the Galaxy" tells us :D
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] man1acc:
Does Lineage have the option to set the display color temperature? My Mi arrived today and the colors are acceptable with the "cold" setting in Miui. So I need to change them in Lineage in order to make them acceptable for me....
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] vomad:
There's 2 color modes - "standard" and "sRGB" with warm colors. Or you can adjust manually three color channels (R,G,B). In my opinion sRGB is better (true tone with 6500K or something) but this profile has less brightness. You can find it in the "Live display" settings.
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] man1acc:
So i basically can set the color temp quite easily. Perfect! Thanks!

Now I need to wait 72h....duuuhhhh
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] Gsrzd:
I'm not sure if this is due to the Rom but I can't resize windows in multitasking mode.
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] Gibghost:
I just noticed that built in WiFi calling is not working for me when I'm on a wireless network with no cell network available. Is WiFi calling working for any of you guys?
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] bgcngm:
I have just shared one new build compiled today. I know I've wrote that the previous one would probably be the last one before officials would start, but there were some delays. Enjoy. :fingers-crossed:
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] Saiger:
Latest build running good so far. But why was the dirac sound enhancer feature removed?
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] Onawt:
I noticed it in the settings as well. What does it even do? Same thing AudioFX does? Or does it actually properly enhance audio? Isn't it something MIUI has as well, meaning it's something proprietary from Xiaomi? (Note: I've barely used MIUI. I unlocked my phone right away and dumped LOS on it)
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] kgblz:
Manual carrier selection doesn't work

Whenever I attempt to perform a manual carrier selection, settings crashes, and the cell radio resets.

The issue is also present in other AOSP ROMs, like Pixel Experience.

So I'm stuck on MIUI as I have to manually pick a carrier to get 4G LTE.
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] Saiger:
Not sure if it's the same as in MIUI but it had different equalizer settings for each Xiaomi headphones. Since they are individually tuned it made a huge difference in sound quality which can't easily be re created with other EQ apps.
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] Henkl:
Been testing the new release.. so far so good! Thanx! Hope it gets official soon
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] malimukk:
There is an issue with the navigation buttons.

If you use the "Compact" layout and then lock the phone into landscape mode, the icon of the "Extra left button" will be shown at a random location on the navigation bar.
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] SWEUP:
Is there a call recording option in this rom?
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] daniel_eh:
Does updating affect Magisk modules? I have a few installed and just figured I'd note which ones if they're going to be removed.
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] Henkl:
Should just work. 2 installed modules worked fine here after update
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] JC-LGMS:
I upgrade to lineage-16.0-20190221 :

When I did it, I had problems (Force close) with Gmail, Maps, Chrome Beta, Play Music and Play Movies. I had to remove them and install them again to solve FC. Erease data for apps wasn't enought.

I still don't have working proximity sensor on the lastest LOS

The upgrade solved my problem with ANX Camera 10. I wasn't able to use the stock camera when I had ANX magisk module installed. It is ok now.

thanks
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] evronetwork:
Want to move to LineageOS when it goes to official.

Anyone know if the LineageOS 16 would come official soon? Surely no one knows the exact day but I'd love to lnow if its e.g. next month or 5 months later :p

Until the official I guess I can stick with official mokee which is similar to LineageOS (no issues so far)
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] bgcngm:
Yes, but it depends on whether you are in a country where call recording is legally allowed.
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] Zormal:
Does this ROM support microg (more precisely, signature spoofing)?
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] kissamopo:
How about device encryption? It's been going on for more than an hour so it looks like it doesn't work currently. Can you give any info on when it will become functional?

Many thanks for your work!
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] silkyriver:
Not a huge deal but I've never been able to get VoLTE to work on LOS. I know the phone itself supports VoLTE through my carrier as when I was on stock MIUI i was able to get it working. On MIUI I had to use *#*#86583#*#* to get the VoLTE activated for the first time which seemed to trigger the IMS registration on the network.

From the little information I can find about LOS and VoLTE (seems a bit of a taboo topic in the wider LOS community) my understanding is that VoLTE functionality exists in LOS natively but carrier support (IMS database/variation?) is based on the original vendor. As I was able to get it to work on MIUI it should also work on LOS as well?
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] mattman83:
The miui volte dialer code is a really improper workaround... I mean I use it too ;) But ultimately it's a poor way to do things and definitely does not imply that the device is natively supported by your carrier for volte. If volte worked out of the box *without* the code then maybe....

M.
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] Lancelot's:
When do we have official for this rom guys? I'm waiting for it
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] mattman83:
I'm not great at reading/interpreting git stuff but between stuff on there and the device now being on lineage supported devices page, I suspect it's just a matter of waiting for the nightly build queue.

M.
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] evronetwork:
1) Can the network meter be moved to the right? (status bar)

2) When you choose manual network in the SIM while it searches and you lock to a particular network the "automatic" below is still showed active, so manual selection works or not?
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] silkyriver:
In my situation, I was able to get the VoLTE enabled and working with my carrier with a magisk module (voenable) which added some configs into the build.prop file. I guess the Xiaomi dialer code must be doing something similar in MIUI.

Once installed the phone status did report IMS registered and LTE provisioning was turned on, although YMMV.
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] bgcngm:
Don't forget to format data for the first time you install Lineage.
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] pblasi:
Do I need to format data coming from Pixel Experience rom? Thanks
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] DahakePL:
No, just wipe system, data, cache
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] :
Seems to me that the ROM is now official: https://wiki.lineageos.org/devices/polaris

But at this moment no one download is available. Maybe tomorrow?
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] bgcngm:
The time has come! https://lineageos.org/Changelog-22/. This thread will be kept open for any support you need.
[Xiaomi Mi Mix 2S ROMs, Kernels, Recoveries, & Othe] Henkl:
Nice! https://wiki.lineageos.org/devices/polaris/install