yashsingh1/xdaforums huggingface dataset:
[Nexus 6  General] Wezi:
I can confirm it does indeed do this. The same behaviour if you're on a call and put it on loud speaker. The sound has to ramp up initially.

I've tried cm12.1, benzo ROM, and a variety of kernel's, after 40 percent the problem persists with the sound dropping for all of them
[Nexus 6  General] mohamedjahir.hussain.3:
I am facing similar problem too. When battery saving mode is on, the sound seems normal, it doesn't dim out.
[Nexus 6  General] shaneledford:
I've been noticing this recently playing music via bluetooth in my car. I have a Tasker event set up so when my phone connects to the car bluetooth it sets volume to max and starts playing music. When this happens a notice my music start at full volume for a second, and then drop in volume for no reason. But this is at full battery, that doesn't seem to make a difference.
[Nexus 6  General] Sinotek:
Guys I bought this phone brand new today and just noticed this issue.... I need answers please... Should I return it or is this a global nexus 6 issue? I haven't found any solutions yet. It's like nobody really cares about it and tbh I'm pissed. I spent a lot of money and I get cracking sound and volume that randomly goes up and down... I've seen posts from 2014 discussing this issue. I sthere any solution what so ever?
[Nexus 6  General] Andromendous:
If i had the choice today, id take it back and get the lg g4. But it has its own issues aswell, i have this problem with my N6, but its only with ringtones, when i get a call/text, so i guess i can live with it. I already exchanged it once, i asked if i could switch to a different phone since its obviously a defect, and they wouldn't do it unless i paid $50, which is bs
[Nexus 6  General] bob2300nx:
Only solution is to have a more full battery. I honestly dont really notice the problem anymore because I rarely am watching youtube or whatever when the battery runs low. Just not something that occurs. It did annoy me alot when I got it but its such a great phone in other areas that I kept it.
[Nexus 6  General] Sinotek:
Happens even when I have 75%... This sucks... I don't use the speakers much and I really do love this phone but I hate that something like this goes wrong...

I'll ask for a replacement tomorrow. It's been a single day. Worth trying another unit... Maybe I'll get more lucky.
[Nexus 6  General] bob2300nx:
Yeah 75% isnt right. Happens around 25% or lower for me (dont really keep track but its low battery)
[Nexus 6  General] Wezi:
I'd exchange it.

I did.. And I've still got the issue. Lol.

Will request another exchange.

Incidentally to anyone trying to reproduce the issue, a sure fire way is to play music in the background, say 30% battery to make the sound drop obvious. Push the music app into the background by pressing the home button so the music is still playing. Now open playstore or another app and start browsing. The combination of touches on screen and app processor usage will knock down the volume considerably. Rotate the screen in playstore or another app and the sound will return to normal. The lower the battery is the more significant the drop. I personally believe the drop happens at high as 90 to 80%, but it's not as noticeable. It's related to battery output voltage. At full charge it's near enough 4.4 volts. When the problem is obvious it's around 3.6, 3.5 volts. You can measure this using most battery apps.

Also, make sure to register your issues on the official Google product forum for this. That way you'll have a reference to point customer support to and they can see its affecting many people around the world.

Link to the forum

https://productforums.google.com/forum/m/#!topic/nexus/84nSaI1Btxc
[Nexus 6  General] abogrhen:
[MENTION=4376495]Wezi[/MENTION] [MENTION=2368118]bob2300nx[/MENTION] [MENTION=3708866]Sinotek[/MENTION] [MENTION=2872010]danarama[/MENTION] [MENTION=4421329]mituzora[/MENTION] [MENTION=5725843]Andromendous[/MENTION]

Will guys i found a way to fix it on my Nexus 6

I used thes mod

http://xdaforums.com/showthread.php?t=3029951

3 days ago to improve the sound quality

Since then the audio dim did not happened

So it is software problem as some said

will it seems that the software for the nexus 6 put the audio service into sleep if no audio have been played in a while

to save on battery

after flashing the mod the audio service is active all the time, so no lowering problem there

You can try it out

I used the highest setting
[Nexus 6  General] bob2300nx:
[MENTION=4730746]abogrhen[/MENTION]

Mind outlining the settings you used? Seems like there are multiple engines and tons of settings. I want to try exactly what you are running/settings to see if it works.
[Nexus 6  General] abogrhen:
well, this mod is easier than you think

you just need to flash the zip file in the recovery

and after the device boot go to viper4

it will ask you to install the driver

press yes, then it will ask you to choose a setting

i choosed highest quality

then enable it in phone speaker and headset from the app

then reboot and everything works

if you want, you can play with the setting on viper4 but that's up to you
[Nexus 6  General] bob2300nx:
I installed it but viper4audio is not in the app drawer. I checked and its in as a system app, cant click it and install high quality. I am running benzo rom so IDK if that has to do with it.
[Nexus 6  General] danarama:
There's a vipers thread in nexus 6 apps. Viper should be in /system/priv-app. If you get the one from the apps section, it should do everything correctly.

Also.its worth noting that some rooms are designed to support wipers and supersu. If you.flash these mods and they won't show in app drawer, it can be because they're designed to show in the rom settings menu, so check there also.

I do use wipers, but only for headphones so.ill test this.
[Nexus 6  General] bob2300nx:
Thank you senior it was in my rom settings.

With viper installed and super high audio (highest) it still gets quieter when battery is running low. Might be not as bad as stock though. To test this I play a song with low battery and then plug it into wall charger and sound gets louder. [MENTION=4730746]abogrhen[/MENTION] can you try test like this and see if it works? Regardless a nice mod that makes the sound better, so no reason not to run it.
[Nexus 6  General] Carbajal3009:
Damn... This issue just started happening today about 10mins ago... Battery percentage when it started was 46%...im on the latest Resurrection Rom. Volume is really low at max... Thought it was the rom.. Still testing.. But I think from reading all these posts it's definitely this software bug that's being discussed.
[Nexus 6  General] nightpanda2810:
Add me to the list. Started happening when I got my Fi invite, since I had to switch to a ROM that supported it. Got the phone from AT&T and paid for the unlock to use it with Fi so I'm trying to avoid swapping it out.

I'm considering ordering the 64 from Google when it becomes available and then just selling this one, but I'd much rather fix this one.

Also of note, since day 1 all notifications started very quiet before going full volume. Wasn't really a big deal to me though.
[Nexus 6  General] rignfool:
OK...

I too suffer from this issue... And I have what could be considered a fix... And not at the same time...

If I use a custom kernel with the stock thermal doo-dad removed... The issue almost completely goes away... However... I then start to get the 15% dead phone thing... So I'm torn....
[Nexus 6  General] Vanndy You:
Same problem.

Excused me, I also have the same problem. I try to do as what u have commented but it is not fixed. May be I am on different ROM or Kernel. So can u please tell me which custom ROM or kernel u are using?
[Nexus 6  General] danarama:
What are you doing? Removing /system/etc/thermal-engine-shamu.conf?
[Nexus 6  General] rignfool:
Using blu_spark... The stock thermal is disabled... So the device doesn't throttle at 40% or 15% or unplug cores....

When I use that kernel... The audio intensity 'bug' does not appear

When I try to use benzocore... Even though it uses Intellithermal... It still throttles... So I think we have 2 different thermal drivers running...

It's been so long since I ran straight Faux kernel I don't remember if it happens there... And the only other kernel I know of without stock thermal... Is yanks... And it's been a while for that too

I'm assuming it's the way the thermal actually throttles at low battery... Not the act of throttling that's causing it

EDIT: just looked at blu_spark thread... He renames the thermal engine binary... I am thinking that's where our blame is going to lie
[Nexus 6  General] rignfool:
OK... I just took my phone down to about 8% and the audio intensity fell off a cliff 2 seconds after starting Spotify...

Unfortunately for me... It was on blu_spark with the thermal-engine binary renamed

EDIT: on a brighter note... I have the exact same repeatable behavior you describe [MENTION=2872010]danarama[/MENTION] below 15% so far
[Nexus 6  General] danarama:
Do you know what the path / name of the binary is? That presumably is different to the .conf file I mentioned? Though I reckon the .conf can be edited to change the throttling.
[Nexus 6  General] rignfool:
/system/bin/
[Nexus 6  General] danarama:
D'oh..of course.

I may try renaming that at a later date. I'm just testing some other thermal issues at the moment though
[Nexus 6  General] proparham:
on mine sound volume drops when battery is below 20% and it plays a weird noise after every sound played ( when it stops playing something a noisy ding sound comes out of the speakers) but other than that it's fine.
[Nexus 6  General] rignfool:
Do you use Viper?
[Nexus 6  General] danarama:
I do. Though not for speakers... That said, someone here said that resolved their issue but not for me.

It's been happening to me at 75% recently. Just checked and viper was still on for speakers. Turned it off now.
[Nexus 6  General] mwebb34:
My top speaker is very badly distorted, I winder how big of a job it would be to fix this myself?
[Nexus 6  General] rignfool:
There's a teardown video from ifixit or one of those guys...

It doesn't look bad to do... But you need glue

Also... I think the distorted speaker comes from low battery...
[Nexus 6  General] danarama:
If you've got warranty, don't do it.
[Nexus 6  General] rignfool:
[MENTION=2872010]danarama[/MENTION]

The new hellscore kernel now has ALL the throttling removed... Thermal and BCL... I wonder if that fixes our problem... I'll let you know as indrain the battery today
[Nexus 6  General] rignfool:
It still happens... Though it seems to be less...

I will say this... Which I never noticed before... When battery is low... Let's say 10%... Screen rotation causes an IMMEDIATE volume drop... Very noticeable...

Anyway... Now trying blu_spark new release...
[Nexus 6  General] chrisram88:
Yea my phone will do the volume drop when rotating at low battery. It's random. Can't duplicate the problem.

Sent from my Sexy Nexy 6 with Pure
[Nexus 6  General] rignfool:
Really?

Try this...

Wait till battery drops significantly... Down to 15 or 10%... Start music... Plug phone in... Hear volume raise... Unplug... Rotate screen... Hear volume drop off a cliff...

If that does not happen for you... Please.. Let me know
[Nexus 6  General] chrisram88:
Will check this out today. I'll let you know my findings.

Sent from my Sexy Nexy 6 with Pure
[Nexus 6  General] rignfool:
[MENTION=2872010]danarama[/MENTION]

OK... I'm now convinced that if its kernel relates... All kernels do it...

I'm thinking it's time to tag [MENTION=647113]hellsgod[/MENTION] and [MENTION=3873953]eng.stk[/MENTION] and see if they have any ideas since their kernels seem to do it the least...
[Nexus 6  General] danarama:
There's a distinct possibility it's not related to thermal at all.. I've been running an M kernel (elementalx by [MENTION=4684315]flar2[/MENTION] ) on 5.1.1 (which many people do) and the speakers start to fade in and out increasingly possibly even from 100% though it was 73% when I noticed it first.

Perhaps its not related to the thermal values in the conf at all, rather it is just a symptom of poor power delivery ?

I really don't know.. My thermal has always been all over the place so I don't even feel I can put any scientific testing behind jt.. For example, until I used an M kernel, sometimes my phone would thermal throttle to 1036, even though it was below throttle temp.. Further, sometimes the cpu wouldn't throttle at 40% battery.. I've always wanted to test changing the values in the conf, but I can't even get a good baseline.

So essentially, whenever I play my game, I have to start plugging it in around 70% to avoid speaker fade.

Google actually swapped out my first handset for this speaker issue. I've now got a charging issue which if it continues after my new charger arrives, they're going to swap again. Though it will be a refurb.. Pretty tired of this phone. Not to mention the black screen I sometimes get after a phone call, which needs to be force rebooted. But that could be the ROM im on.. Maybe I need to go back to stock (Yuk)
[Nexus 6  General] rignfool:
First off...

That throttling your noticing is BCL throttling (no idea on the abbreviation)

But according to those in the know... It's a battery voltage based throttle...

I would get it EVERY BOOT... Starting at 1036... And watching, with Kernel Aduitor, it would slowly lift to 2649 again...

That's actually why I poked you about hellscore and blu_spark... They both have BCL throttling disabled...

Now... The only reason I don't think it's power delivery... Is because if it were voltage related... I would assume that eventually the voltage would drop to the point where it could not vibrate the speaker diaphragm... Or if it did... It would pop...
[Nexus 6  General] danarama:
Hmm interesting. I would just get it randomly, usually when playing a game. It would drop to 1036, even when plugged in. Reboot with power connected, it would never get back to normal. Normal reboot sometimes worked. Reboot in the freezer always worked.. That's why I thought it to be thermal. But nothing is certain.

I'm just making uneducated guesses here :)

Oh good news, turbo charger arrived today and resolved my issue. Seems my old turbo charger went somewhat faulty. No refurb handset for me.
[Nexus 6  General] shapk:
Still no solution for drop sound issue?
[Nexus 6  General] rignfool:
Not yet... You got any ideas what's causing it... Or how to slow it down?
[Nexus 6  General] Scythe:
Well I've been suffering from this one for a while so I had tried somethings like op but it seems it is a permanent issue, which I don't understand how others don't suffer from it. Or they are not do not realize it.

1- apart from charge amount, it's obvious there is a volume normalizer embedded in nexus 6, also moto x, it does not always kick in but on certain songs you can feel it. I don't have an ear for this stuff but i think it might be low frequency sounds (bass). Also when charge is low it is more realizable.

2- like op says hellscore and bluspark seems to solve issue a little bit but not completely. Charge induced sound fade starts at very low charges like 25 or even 15 percent, which also lowers frequency to 2 ghz. That give me the idea it might be a firmware issue embedded by motorola, though i still dont understand why I can't use my phone at full power even it is lowly charged or warm up (i think users should able to disable safety measures at their own risk)? Maybe it is a kernel code hiding inside so no one yet to see and terminate it.

3-at very low charges fading effect reaches maximum effect, even keyboard tone starts fading. But there is still a solution, which is temporary of course. You can open a song and lock screen immediately, by this way, somehow, charge induced fade does not kick in but of course normalizer works still. But again this technique does not work below 10 or 5 percentage.

In the end i don't want to believe this is a hardware issue but it might be firmware issue which goggle or Motorola can not flash it so they are still silent about it and when ever some user mentions it only they say, factory reset or send it back for RMA. Question is, other users really don't have this or they don't realize it?
[Nexus 6  General] danarama:
I think they just don't realise or notice.
[Nexus 6  General] carlospang:
hi to all. how to solve this problem
[Nexus 6  General] danarama:
Nope.
[Nexus 6  General] MrMiami81:
I'll throw my hat in the ring.. I've noticed it for the last few weeks and have no idea what's causing it.. Good to know I'm not alone.
[Nexus 6  General] Yasharkhan:
very beautifully explained
[Nexus 6  General] ilanzo82:
I rma'd for several reasons, the speaker volume being one of those reasons. replacement phone...exactly the same! this sux
[Nexus 6  General] stinger4321:
Is this an issue on all models? Does it matter who ur carrier is? I just ordered the 64gb version...
[Nexus 6  General] danarama:
They're all the same so I would expect they're all affected.

Went back to a lollipop kernel and my volume doesn't start "flaking" until near 40% again. On the marshmallow kernel, it pretty much flakes all the time on battery. It got do annoying.
[Nexus 6  General] shapk:
Problem solved

This is a hardware issue but not what you think.

It's a charging issue if you ussing Motorola Turbo charger.

I change my charger - Samsung charger 5.0V - 2.0A and the issue it's gone.

Maybe the turbo charging mode not charge our Nexus 6 correctly.
[Nexus 6  General] Scythe:
I hope you are right but, since I use hellscore kernel I rarely face sound fade. Only it happens when there is a CPU throttle. For example if you fully charge your phone and trigger a temperature related throttle (cpu lower it's speed to 2ghz) then sound fades. But if you limit your cpu freq lower than auto setting it does not. Anyway let's try different charger. :good:
[Nexus 6  General] rignfool:
Sorry bro...

Problem not solved...

Turbo charger not involved...

Unless you're saying the turbo charger has caused irreparable damage to the audio parts of the phone...

And only the analog audio parts... Bluetooth is unaffected
[Nexus 6  General] Brutalibus:
I've do the test with real racing (as mentioned in first post) and played song from google music and I'm not affected. I've received my nexus two days ago, there is something other test that I can do?

Inviato dal mio Nexus 6 utilizzando Tapatalk
[Nexus 6  General] rignfool:
At low battery?

Like 15%?
[Nexus 6  General] Brutalibus:
It was 16%
[Nexus 6  General] rignfool:
Running stock kernel?
[Nexus 6  General] Brutalibus:
No, I'm on Despair L CFS R29.5
[Nexus 6  General] Scythe:
Brutalibus can you try something? There is a program called "stability test" it loads cpu to max. When I tried this program with classic stability test and open music at low charges I saw in kernel auditor cpu drops to 1958mhz and sound fades. But sometimes it stays at max CPU speed and nothing happens (except because there is no throttle temps increase near to 90 degrees so I was cancelling it.) Can you try this one also? But please check your temp and cpu freq.
[Nexus 6  General] Brutalibus:
OK, I will try when my battery will be under 15%.
[Nexus 6  General] rignfool:
That is BCL throttling... Both blu_spark and hellscore have it disabled
[Nexus 6  General] Scythe:
I tried both but result is above, after 30 percent cpu drops 2ghz. But when charger is connected it returns back to 2.6 ghz. I think flashing new kernels are affected by old kernels, e.g. flashing hellscore over Franco still keeps some settings
[Nexus 6  General] rignfool:
That's Franco's ramdisk messing you up...

Reflash boot image or whole ROM and then reflash kernel... BCL will go away
[Nexus 6  General] Scythe:
Ok Returned back to blu_spark and this time no cpu freq drops and no sound fades but when I used stability test and max the load sound fade happens again, even no cpu throttle. Strange. ;)
[Nexus 6  General] zack0386:
On jdk 3.05 and both speaker and Bluetooth are effected. No tweaks what so ever. Have had this problem on every rom except stock lp. At 99% battery, use turbo charger and Samsung so I haven't a clue
[Nexus 6  General] Lemagex:
I had this problem on kernels other than Despair. no issues since switching
[Nexus 6  General] @r@v!nd92:
Is this issue still seen in official marshmallow 6.0???
[Nexus 6  General] Yasharkhan:
Unfortunately yes but it's a bit better now, the volume doesn't get too low and you can turn it up by moving the volume up and down
[Nexus 6  General] @r@v!nd92:
Thought so!Are you using any kernals or fully stock.?my m preview 3 volume lowering was better controlled by blu_spark kernal though..should try it out again and see..
[Nexus 6  General] Yasharkhan:
Stock, not rooted yet
[Nexus 6  General] rignfool:
[MENTION=2872010]danarama[/MENTION]

New experiment for you to try...

I'm currently overvolting ElX kernel by 20... Gonna kill the battery and see if that fixes it...
[Nexus 6  General] pandabeats:
HELP

I have a brand new nexus 6 that I flashed with Marshmallow. It was fine for 2 weeks but as of last night I started having this same issue. Volume is around 30% even when the slider is maxed.

So far I tried rooting and installing Viper4Android. Viper4Android shows the driver enabled and active but the problem still exists.
[Nexus 6  General] rignfool:
http://xdaforums.com/showthread.php?t=3236518

VINDICATION!

I'M NOT CRAZY!
[Nexus 6  General] pandabeats:
You are definitely not crazy. I tried posting in the other thread you mentioned but I am to much of a noob on this forum.

I have half volume all the time - screen rotation does not affect it what so ever.

Im currently running Benzo rom with benzo core. I noticed the issue when I flashed marshmallow but it looks like people are having this issue in lollipop.
[Nexus 6  General] x0nar:
Hi Guys. I've been facing this problem lately. The thing is , it does not matter if Battery <40% or not. For me, irrespective of any battery percentage, the volume after sliding it up to max or even two to three levels below max, begins to fade until it becomes inaudible, and then normalizes to medium volume. Apparently, I've had this issue only after upgrading to Marshmallow. I've never had this issue when I was on Lollipop. Any help appreciated guys.
[Nexus 6  General] Abaddon:
well i just happen to experience it first time a while ago. had the device for 6mos. now. will try reverting to whatever rom + kernel I had and maybe, maybe it has something to do with the audio throttling
[Nexus 6  General] danarama:
I've given up. Too much throttling of everything. I've decided just to hate the nexus 6 instead.
[Nexus 6  General] NOSTALGIA:
hahaha.... too bad.. this speaker volume lowering is also bugging me.. but thats only it...
[Nexus 6  General] danarama:
When I play games, the CPU throttles when it hits 40% and although its only to 2.2 GHz, it has a noticeable effect on gameplay.
[Nexus 6  General] NOSTALGIA:
this feature is really bugging me.. it sucks to have this on a google flagship
[Nexus 6  General] mikeprius:
I thought it was just me, but I also noticed the lower speaker slightly quieter than the upper.
[Nexus 6  General] mrossott:
Solved

Hola yo lo solucione llendo a setting, display, and change the option sleep from 30 seconds to 30 minutes and also in setting, security in "automatically lock" I did the same, change from 30 sec to 30 minutes and I the volume does not fade down anymore! Hope to work to you guys, this problem was driving me crazy.
[Nexus 6  General] [Krueger]Dr.Stein:
viper4android

I use viper4android to somewhat sustain the volume while playing music. Give it a try. https://play.google.com/store/apps/details?id=com.vipercn.viper4android_v2_fx&hl=en
[Nexus 6  General] yogesh701:
Speakers issue

I am too facing this speaker volume issue. The volume just Haphazardly goes up and down. I hate this :mad:
[Nexus 6  General] rignfool:
What kernel are you using... I THINK, though I have no proof... That mpdecision seems to curb some of the volume fluctuations...