yashsingh1/xdaforums huggingface dataset:
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] Alexander_Gostev:
Здравствуйте Electry., Я думал как заставить работать жесты на выключеном экране. Есть идея попробовать и заставить их работать - но увы у Меня нет должного опыта для этого, и поэтому Я вынужден просить вас.

1)Нужно попробывать заменить дайвер тачскрин на версию 4.4.2 с отключением проверки версии программы тачскрина. и попробовать будут ли работать жесты. (жесты на выключеном экране не работают при переходе с 5.0. на 4.4.2 и Я думаю это из-за проверки версии программы тачскрина).

2) Мне посоветовали попробывать приделать драйвера на примере другого устройства - Либы жестов одинаковые, есть масса драйверов Qualcomm с жестами - точно такими же как в примере меня в примере, можно поискать по названию функций либ, найти для своего тача, добавить в конфиг ядра то что требует драйвер, потом нужно собрать и тестировать.

Ссылка: ( https://github.com/SnowCat6/DOOGEE-...1.1/drivers/input/touchscreen/mediatek/ft5x0x )

Буду очень благодарен если вы поможете с этим Electry.

"Translation into English"

Hello, I thought about how to make gestures work on the off screen. There is an idea to try and make them work - but alas I do not have the proper experience for this, and therefore I have to ask you.

1) It is necessary to try to replace the diver touchscreen with version 4.4.2 with the disabling of the version check of the touchscreen program. And try to see whether the gestures work. (gestures on the disabled screen do not work when going from 5.0 to 4.4.2 and I think this is because of checking the version of the touchscreen program

2) I was advised to try to attach the driver to the example of another device. Any gestures are the same, there are a lot of Qualcomm drivers with gestures - exactly the same as in the example of me in the example, you can search by the name of the functions, find for your mouse, add to the kernel config that requires a driver, then you need to collect and test the Link:

( https://github.com/SnowCat6/DOOGEE-...1.1/drivers/input/touchscreen/mediatek/ft5x0x )

I would be very grateful if you could help with this Electry.
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] user700512:
OTAs worked successfully for me 3 consecutive times since Aug. 02! Even on the same nightly release date! Haven't seen this for months! Great! And after Aug. 29 there is a new OTA UI. My battery life has been great for the past month reaching almost 3 days between charges. A great job!
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] PandoraHD:
wifi issue on nightly build 08/23/17-klte 14.1 ERROR; NETWORK_SELECTION_DISABLED_ASSOCIATION_REJECTION=3

This is happening only at my home on ATT provider. I can connect to hotspots and at work with no issue. My status bar shows wifi connecton, but I assure there is no connection.

Thoughts? Flash an older version? But why if my wifi works on other services. PUZZLED!
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] cyprien T:
With the last update randomly the gps doesn't fix...
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] Electry:
klte?
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] PandoraHD:
Yes it was on klte. However it was not the OS. Somehow my home router had restrictions placed on the wifi. Issue has been resolved. Thanks.
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] Electry:
It's just that you posted in a wrong forum section.
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] cyprien T:
Bug with GPS today. I reinstall an old ROM
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] Electry:
Several other users are also reporting issues with obtaining a stable GPS lock (in the last nightly build), introduced by this patch.

It should be fixed in the next build.

Also, some other changes coming:

4k video recording frame drops/stuttering fixed. Now records in full 30fps.

Updated video recording AAC audio bitrates: 720p - from 96kbps to 128kbps, 1080p - from 96kbps to 192kbps, 1440p - from 96kbps to 256kbps, 2160p - from 96kbps to 320kbps

Resolved issues with the microphone in VoIP apps (Skype, Hangouts, etc...)

Enabled wide-band speech bluetooth profile. Should fix some connectivity issues with BT handsfrees/cars.

150+ kernel security patches.
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] Alexander_Gostev:
Thank you very much for your work and support. Will you try to make the driver for gestures on the locked screen? What do you think about it? - https://xdaforums.com/showpost.php?p=73575291&postcount=1157
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] Electry:
Booted Oreo
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] lockhrt999:
You took no time. Good job.

What's working? What's not?
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] cyprien T:
Have you install Substratrum on our device? I would like to install by zip with TWRP but I don't know where I can find a correct version who works correctly on the k920 lineage os 14.1. Thanks!
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] Tiraelforever@gmail.com:
Please wait for the release of Google Pixel 2 and make the port of the stable version of android 8 from this device for Lineage o.s. 15
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] dibon321:
Version from 30.08. Is horribly laggy for me... [emoji47][emoji35]

Odoslané z K920 (ROW) pomocou Tapatalku
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] lockhrt999:
I think this feature must be supported by messaging app to work properly. Earlier versions of Google messenger didn't support this so you couldn't configure this in sim settings.
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] :
it doesn't work like that
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] :
Any solutions to the lag, SystemUI crashes and for the random restarts?
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] lockhrt999:
Change power profile from battery menu.
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] cyprien T:
Thanks Electry. VoIP and GPS work perfectly with tje last update! :good: Congratulations!
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] :
Finally an useful answer, thanks.

---------- Post added at 06:55 PM ---------- Previous post was at 06:51 PM ----------

How to install that upadte? From the update menu in the settings? The august 30 nightly update?
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] lockhrt999:
Good way is to download it from website and install it through TWRP.
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] cyprien T:
Same issue for me with the last update.
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] lockhrt999:
1. Can't disconnect call from headset button.

2. Once in a while lock screen can't be unlocked, here the problem is a ghost touch.

3. Sound in camera is very boosted causing it to go flat

4. YouTube has gotten slow. Takes a couple of seconds to go full screen. Sometimes it starts to drop frames.

5. Unable to customise led for missed calls.

I'm on few months old ROM.
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] lockhrt999:
I don't fancy updating every week. There are always more bugs than new features introduced. Consider that these are not OEM ROMs so these are not extensively tested. I have once bricked my phone during updating.

I also have a Moto e on lineage. On one update it keeps resetting behind your back at random. Imagine the ordeal. Everything vanishes from your mobile.

Many of the bugs mentioned above were not present in older ROMs. I absolutely hate AOSP system. Google can't keep their stream bug free neither can official lineage.

---------- Post added at 10:05 PM ---------- Previous post was at 10:04 PM ----------

I'll update to new version tomorrow.

About YouTube bug, I don't think it's the app that's faulty. I have most basic smart phone you can buy today Redmi 4a and there's no problem on it.
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] :
lineage is far from AOSP, it needs many patches and reverts to work on our device hence the bugs and instability. without it not even the camera would work. now imagine there is pure aosp ment for google devices, another caf aosp adapted by qualcomm and add those patches made both by pros and amateurs like us and take a look at long device list supported by lineageos and every device needs it's own code and as a bonus we have to work with binaries ment to work with android 5.0.2. it's a miracle it boots, i can't imagine doing something similar under pure linux on PC
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] Electry:
I agree, but you can't really expect weekly builds to be extensively tested (and all this just by one/two people). That's the reason why we got stock 5.0 more than 6 months later than its release by Google, because of Lenovo's "extensive testing". I am not even gonna mention the ****ton of bugs present on stock Lolipop ROM, but whatever.

I understand that it might be a hassle to update every week and worry about stuff breaking, but that's what you have to pay for getting an up to date android OS. You can always revert back to whatever version you had before.

I liked when back in CyanogenMod days there were "snapshot" releases, tested for a bit longer.

LineageOS is a lot different from AOSP, many things are forward-ported to work with old hardware.

Qcom is locking stuff up more and more. e.g. that's why we don't have SIM toggle on 13.0+, they simply moved the source code (with Android M) into their proprietary extension, which our device doesn't have.

EDIT:

"Unable to customise led for missed calls"

You can do that in Settings->Notifications->Gear icon (top right)->Notification light->Tick Use custom values->Missed call

I'll check what can be done about the camera mic issue mentioned earlier.
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] lockhrt999:
My point was weekly update is very frequent. Monthly would be okay. That would give developers more time to play with the code.
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] Alexander_Gostev:
Who does not have enough updates once a week - go to the MOKEE, there are updates every day.

Кому не хватает обновления раз в неделю - переходите на МОКЕЕ , там обновления каждый день.
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] cyprien T:
Yes it's not necessary to have an update every week. I work with this rom since January. Today we have a perfect rom. I don't wait any fonctionality or update because there is no bug.

It's always possible to improve but it's no urgent.

For me ;

Memory of the sim setting. Worked perfectly before

The possibilty to have OMS to install Substratrum...
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] chili71:
Friends, I am very pleased with the work you are doing. Considering the 3 year-old hardware of K920, I think the Lineage is very well implemented / developed, maybe somewhere at 99%, from my point of view.

The frequency of updates seems OK for me, every week I look forward to the update, maybe is something new, modified or improved.

So, personally, I appreciate very much your hard work and I respect the fact that you lose a lot of time for people you don't even know...like me...

Thank you again, Electry & co !
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] :
Which update is the most stable and bug free?
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] cyprien T:
Last update!
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] cyprien T:
When I see the new iphone, Samsung and the rest, the k920 was very a goog phone. Large screen, 3 go ram, borderless...

We were visionary ?
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] underr.t:
Actually, we were really lucky to have [MENTION=4575700]frantisheq[/MENTION] and [MENTION=6608514]Electry[/MENTION] port Cyanogen and LineageOS to our device. They literally bought it back to life. Otherwise I don't think I would stick with it for this long. So, yeah, I'm really grateful. Thanks guys!
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] Kurbatos:
I had dabltap on Android 4.4, but after missing the official updates. And setback 4.4 is no longer appeared.

Black screen with a blue diode fishing permanently. 2-3 times per day stably. I really hope that there is a reason, because the 7.1 firmware simply elegant

Отправлено с моего K920 через Tapatalk
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] lockhrt999:
Is there a way to show battery percentage on the lock screen?
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] Kurbatos:
http://cloud.tapatalk.com/s/582ac5e65dc36/Screenshot_20161115-112155.png?

Отправлено с моего K920 через Tapatalk

---------- Post added at 08:52 AM ---------- Previous post was at 08:23 AM ----------

Отправлено с моего K920 через Tapatalk
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] lockhrt999:
It wasn't showing up on my lock screen like it's appearing on your screen. However I changed the battery icon from status bar menu and now it's working.
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] kronos1:
So latest build is from 13.nov.2016. What say You who test it, is it stable to use it as daily driver mobile?
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] lockhrt999:
yes, stable for daily driver.
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] underr.t:
Can someone please explain to me what is the difference between these Picture Formats?

And which one should I use if I want to take RAW photos?
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] lockhrt999:
Apart from JPG, others are different RAW formats. Google for them. I don't think, the app can capture the RAW image, it crashes.
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] underr.t:
Yup, confirming. App either crashing or not doing anything when switched to any of RAW formats.

Edit: It catches something, testing a bit more. Will get back as soon as figure it out.
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] koraba031:
What i found is that lock screen phone shortcut is not working. Instead of phone, i'm getting the recording icon. Even when you go and change the shortcut to be "chose application" option phone is not there.

Also another thing noticed is when going to dial a number i do not have the SIM card option on the left
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] janforman:
I am using RAW everytime and it is working fine.

You can choose (DNG - slower processing, but no additional processing required) or Bayer format which is faster, but needs processing in secondary application FreeDCam Viewer.

If you can wait for processing (seconds) after you take photo set it to DNG.

Format I leave default bayer-mipi-10gbrg. It's important only if you do import in another software (I don't recommended that). Convert it to DNG in phone.
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] remont5:
home button responds very poorly, still I have to put him 2-3 times :(

Wysłane z mojego K920 przy użyciu Tapatalka
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] koraba031:
When accessing clock through the screen widget, it crashes
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] lockhrt999:
It doesn't on mine. What's your launcher? I'm using Nova. I have had a soft reboot while dragging an icon across on desktop. That's all.
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] koraba031:
I tried with both Trebuchet and Google build in launchers
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] xoror:
I faced several issues with CM14.1.

I use the latest TWRP recovery from Electry and noticed the following:

1.	After restoration of a backup with CM14.1 I need to activate once again the developer options;

2.	After restoration of a backup with CM14.1 settings of lock screen are missing (for example, shortcuts);

3.	After restoration of a backup with CM14.1 the second user cannot work normally because the loop of Trebuchet crashes.

One possible reason for issues can be the fact that I did not perform a backup of some partitions but issues also can be in a build…….
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] :
get your nerves together and stop posting same questions in multiple threads, there is even Q&A section for it. i've never had problems with notification sounds, can't help. regarding double tap in stock rom i was never able to make it work
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] lockhrt999:
Just had my first blue LED of death. I feel part of the club now.
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] Alexander_Gostev:
Many thanks for gps, Electro. As concerns "PS: Is there someone for whom the double tap to wake worked on stock kitkat ROM It did not work for me Apparently there are 4 different touchscreen variants with different touchscreen firmware?.." CM13 on everything worked steadily, and CM 14.1 Gallery crashes when you unlock.
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] mnrajeesh87:
I am not getting LTE on my phone... Any issue?
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] cyprien T:
Works perfectly on both sim! Thanks [MENTION=6608514]Electry[/MENTION]! ☺️
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] :
How to update through TWRP?
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] chili71:
Install Lineage with TWRP
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] :
Do I have to reset the phone to update?
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] chili71:
No, I have not reset since installing Lineage, that's March. The phone works perfectly, restarted / locked approximately 3-4 times in 6 months ... and maybe it was my fault ...
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] cyprien T:
The update 6th September works really perfectly. Is it necessary to continue to install the update on lineage 14?

When roughly will we receive lineage 15? Thanks.
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] Ottoman61:
My phone is not connected to 4g but other phones connected to 4g.The 4g on my phone is only connected to the city center.What is the problem ?
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] cyprien T:
Depending of your provider. The K920 doesn't have all bands. Like a lot of Chinese mobile phones today.
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] user700512:
I have recently noticed again an old problem with contacts on LA. Whenever I add a birth date without the year and save, this contact is silently deleted.

Another small glitch, which has also been permanent in LA is the wrong SIM card shown for incoming calls during ringing and in history.

The dialer and contact manager that I use is True Phone.
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] Kurbatos:
I also have a problem. Although before it was not. I did not change the SIM card and the place of permanent deployment. But switching between network modes became worse. Just awful. Sometimes I can be completely without the Internet in a zone of comfortable communication. Until I manually switch these places or mode in the plane. Also it is necessary to stick, while communication will not be adjusted. Something is clearly spoiled. For example, now I went out of the house, wifi disconnected and the mobile Internet itself did not turn on. Until I changed the network mode to 2G manually. And then when there was 2g, I already put out LTE and the phone connected to it. And the level of communication is excellent. By the way, on the second sim card there are fewer such problems, but they still exist. I repeat that about 2 months ago there were no such problems at all. I do not remember after what update everything went wrong.

Отправлено с моего K920 (ROW) через Tapatalk
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] dadula2133:
Is there any patch for lack of dialer?
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] mircey:
Hello friends

I used the lineageos version before

in this version the voice of the other side is very loud and clear

now I use the original lollipop

but in this case the voice on the other side is low

how can i increase it more
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] cyprien T:
Now I have the same issue. In my house or in my village I have only Edge. Impossible to have H, H+ or LTE.

In other area LTE works fine. I don't understand. With another phone LTE without issue...

When I switch data on the second SIM Lte works. It's the same provider...
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] nsttkn:
I did not faced any problems?
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] Alexander_Gostev:
When will the first assembly (LOS 15) come out?
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] :
hard to tell, every device i've seen has problems with camera at least
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] dibon321:
I've updated to version 20170920 this morning and it is about 3. or 4. update in row where google search is literally frozen! It is so laggy and unresponsive after showing search results...

Odoslané z K920 (ROW) pomocou Tapatalku
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] cyprien T:
Thanks!
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] Kurbatos:
You need to edit the file along the path:

Root / system / etc / mixer_paths.xml

Open it as text. And fix <path name = "anc-handset"> where 93 set the value to 60

This is noise reduction. It helped me. You can make less value. But at the same time, you can also turn the volume of the speaker itself up to 95. A bit above the noise cancellation is the line <path name = "handset">

This is it.

Отправлено с моего K920 (ROW) через Tapatalk
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] Petr Ch.:
Don't disturb

Hello friends

In the version 0920 is continously turned on "don't disturb" and there is no way to turn it off. :(

In the version 0830 (my last) it was OK.

In the gaps version is not the problem.

Could you give me some advice?
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] lockhrt999:
[MENTION=6608514]Electry[/MENTION] Few bugs/suggestions,

1. Prevent accidentals wake-up doesn't work. Few times a day, my mobile wakes up while in the pocket and not only gets unlocked but it also screw up with lots of apps. It would open any app and do whatever it likes. Ambient display, tap to wake and smart lock on-body detection are enabled on my mobile.

2. Automatic outdoor mode makes the mobile partially unusable. The contrast is so boosted that I can't read google maps and many other apps.

3. Sometimes when I turn on Bluetooth, the device gets rebooted. It has happened Thrice so far.

4. Can you spare some CPU in power saving mode? Power saving mode is extremely laggy. I often find myself turning the power saver mode off.

5. Is it possible for apps like gallery and google photos to auto rotate for landscape photos? Life will be very comfortable.

6. Camera app shoots video in low light environment with unnecessary high brightness making loss of details near bright/highlights.

7. I think there's some beauty mode on in camera. When I take photos of me, it does lose out on lots of details.

8. Is there a way to turn off shutter sound? The setting in camera doesn't work. It makes me to unable to take photos in quiet zones (like hospitals).

9. Mic in camera is still very boosted, can you tone it down a little? Also few of my video were caught without any audio.

10. May not be bug in ROM. When I sometimes don't access mobile internet for some time, it gets deactivated. It shows a little cross at the bottom of network range icon. It still is connected LTE or H+ mode but net is off. I have to toggle airplane mode to again have accessible internet again. Any idea?

Thanks.
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] cyprien T:
Another bug for me. Automatically after a call, the volume of the ring is low.

Last update.
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] lockhrt999:
One more bug,

11. Wifi hotspot timeout resets to 5 min. Can't set it to 1 min, never or 10 min.
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] chili71:
Maybe you set low volume from System Profiles -> Ringtone Volumes ?
[Lenovo Vibe Z2 Pro ROMs, Kernels, Recoveries, & Ot] nsttkn:
I have a (very big) battery draining problem on 20.09.17 update