yashsingh1/xdaforums huggingface dataset:
[G3 Q&A, Help & Troubleshooting] beninho97:
Anybody got it fixed with a different method by now?? I tried everything including mixer_paths.xml, making call and service menu. The latter makes it better a bit (cleans the distortions but the hissing and the quietness of the left channel is still there. It works until i reboot. Could some additional tinkering in mixer_paths work? Or should i replace the headphone jack?
[G3 Q&A, Help & Troubleshooting] Orcam:
Dunno mate. See if you can get a logcat. I got one and found some lines that were pretty suspect. Not sure where to go from there though. We would need to speak to a Dev.

My problem is with the white noise in the back ground, these fixes work to take out the crackles and pops, but not the constant white noise when something turns on and off.
[G3 Q&A, Help & Troubleshooting] beninho97:
Managed to fix the distortions by adding this under "headphones":

<ctl name="DAC1 Switch" value="1" />

A little white noise in the left channel is still present, and it's still quieter than the right one. BUT now my earpiece emits the same sound as my headphones when they are connected and playing music WTH. How could i disable that??
[G3 Q&A, Help & Troubleshooting] Orcam:
That line should have already been in there? That one tells the DAC to turn on or not. I tried changing that one to 0 and it turned the whole sound output for "low latency playback" off. The noise in the left channel, if it is constant white noise, is a problem with the "low latency playback" I think. I took a logcat and when the phone uses the "deep buffer playback" setting, for example when you change the volume and hear the beeps through your headphones, this is not a problem at all, there is no activation of this white noise.

Your ear piece will be under a different category in the mixer_paths.xml file, it will be headset or something, there are quite a few you may have to test it out.

Can I ask, is your white noise always there? Or does it come on only when you have entered a music playing app, or when you begin playing a track? Do you hear the white noise stop about 3 seconds after playback stops?
[G3 Q&A, Help & Troubleshooting] beninho97:
That line wasn't there for me originally, asked a friend to send me his xml file from his g3 but it's the same. I found that line further up in my xml and put it under the "headphone" section.

The sound is exactly like you described. It appears when as I start the music and stops about 3 secs after pausing the music.

I'll try and find the earpiece section.
[G3 Q&A, Help & Troubleshooting] Orcam:
Sit on your homescreen and volume up with headphones in, it doesn't get white noise does it? It's very odd. I swear it must have something to do with Low Latency playback routing vs Deep Buffer.
[G3 Q&A, Help & Troubleshooting] beninho97:
No luck with the earpiece. I wonder why would the "DAC1 Switch" line turn on the earpiece in the first place. If I connect an AUX device there is no earpiece sound, but i have to connect a headphone first at every reboot(to turn on the dac maybe?), and also the distortions are back if i try to set the volume like you suggested (sitting on the homescreen, no music) it's really annoying.
[G3 Q&A, Help & Troubleshooting] Orcam:
So you are getting headphone noise when you sit on the home screen and volume up with nothing on? Can you take a logcat of music and of voluming up? That's bizzare. What's your rom?
[G3 Q&A, Help & Troubleshooting] beninho97:
Nope, not the wihite noise, just loud crackling from the left channel. Dont know how to do that but i"ll try it. My rom is UX5.0_V30N_LIGHT_6, but it's basicly like this eith every rom i tried so far.
[G3 Q&A, Help & Troubleshooting] Orcam:
Not sure exactly what you are facing, but I managed to single out the white noise problem. I finally got a playback of music without the white noise bug. I got a log of it. http://pastebin.com/YPz4dqyw . It seems to me that this white noise problem, if you are facing it, was not what I previously thought about low latency play back. It has to do with something else.

I would think that your problem is the DAC not getting enough power to drive the headphones. Are your songs pretty maxed out or something? Is it modern compressed pop music? It might be having a hard time with that.

EDIT:

So I took some logs, put them into notepad++ to compare them, and I believe I may be onto something. I have taken 3 logs, first was with the Comp value on default, and some how I got no white noise, and very little distortion. I rebooted and took this one, white noise. Then I rebooted again with comp disabled and still had white noise.

I then compared them. And seem to have narrowed the problem down to a setting, which must be somewhere in the mixer paths xml file. Here are the compared ones. . As you can see, the lines are routing to a different thing when it produces massive amounts of white noise and distortion. We need to find some way to get it to always route to the out_standby : stream . Rather than the usecase one. I don't know how. I hope a developer knows how. I may ask on the development page.

EDIT: I can confirm that the phone call fix does work for the white noise problem, the scratching noise is not affected by it though. Here is a log of a phone call being made, which fixed the problem of the white noise.

http://pastebin.com/9thic1HQ
[G3 Q&A, Help & Troubleshooting] beninho97:
Sadly, i don't really understand the logs, (i'm wayyy too noob here) but i'm glad you're making progress and wish you luck. The make a call/loopback fix doesn't fix niether the crackling nor the white noise for me.
[G3 Q&A, Help & Troubleshooting] Orcam:
What app are you using for play back? Can you take some logs? Merry Christmas by the way, at least it is in my part of the world.
[G3 Q&A, Help & Troubleshooting] beninho97:
I'm a little late with this but you too! I'm using the stock fulmics lg music player. Did you figure out something? I'm thinking of getting a new mobo.
[G3 Q&A, Help & Troubleshooting] MauFerrusca:
Headphones vs headset

When using normal headphones (no microphone or buttons), the hiss is completely gone.

But when using the official headset that comes with the phone, there's still a very noticeable hiss from both ear pieces. When you stop a track, you can hear something like a low white noise for about 3 or 4 seconds and then it stops and becomes quiet. When you play any track that hiss is there again but if you don't pause it it prevails for as long as you play music.

So my question is, how is this headset described in the mixer paths XML file? Is it the headphones_aux or does it have another description?
[G3 Q&A, Help & Troubleshooting] ZooMs:
I have a temporary fix.

To fix the hissing noises this is what you have to do:

First, you go to phone app, then you call the number what you want (you can call yourself), and when you stop hearing the biiiiip, biiiip... then you have to disconnect the headset jack from the phone and just after that you end the call. After doing so, you can reconnect your headphones and you won't be able to hear more hissing noises until you restart your phone. I hope you found this fix useful. Cheers!
[G3 Q&A, Help & Troubleshooting] MauFerrusca:
Thank you! I already knew about this fix, but I'd like something a bit more definitive. Hopefully some one know the answer to my question.
[G3 Q&A, Help & Troubleshooting] pol098:
Fix made it worse ...

I don't know if anyone is still following this thread, but I've been having the hiss problem, tried all the fixes here unsuccessfully, and finally made it much worse ... If anyone has any suggestions please I'd be grateful. LG G3 D855, Marshmallow, fulmics 6.9. When plugging in standard stereo earbuds without microphone, loud hiss in left channel; sound quality otherwise OK, on battery or plugged in. Made phone call and unplugged, tried receiving phone call and unplugging. No change. A couple of other things: Google Now sometimes opened by itself, and the screen brightness went to maximum on plugging in earphone. Tried plugging in stereo splitter (i.e. plug without load); it showed as headphone in notification area, and the hiss remained on connecting the earphone. Next I edited mixer_paths.xml as described (copied to PC, renamed the original file to mixer_paths.xml.org, edited both COMP1 Switch to 0, HPHx volumes to 18, copied back). I made sure that the edited file had 644 permissions. After reboot the result was worse: in addition to the hiss, there was very bad distortion. Fair enough, I'd tried, let's put it back.

After deleting the edited file and re-renaming the original back to mixer_paths.xml (and checking that it still had 644 permissions), the hiss and added distortion remained after a reboot. I double-checked that the content hadn't changed

In other words, editing mixer_paths.xml as described in this thread, then restoring it exactly as it was made things much worse. Does anybody have any suggestions to try, please, at least to return to hiss without distortion?
[G3 Q&A, Help & Troubleshooting] ceyms26:
Hello there I am using g3 fulmics rom 7.5. How can I fix the blur in the weather forecast?
[G3 Q&A, Help & Troubleshooting] se1988:
Maybe ask in the fullmics rom thread?
[G3 Q&A, Help & Troubleshooting] ceyms26:
In previous versions of fulmics there was no such problem. There was a problem at 7.5 and I could not fix it.
[G3 Q&A, Help & Troubleshooting] se1988:
This thread is for another problem entirely. Start a new one.
[G3 Q&A, Help & Troubleshooting] awtryau89:
I have tried my phone with Bluetooth and I hear no hissing at all. I hear it with my Bose QC15s but not with Apple addiems.
[G3 Q&A, Help & Troubleshooting] McGyver dei poveri:
This is a really annoying bug, do you have ART or DALVIK?
[G3 Q&A, Help & Troubleshooting] meherenow:
I changed to ART but it made no difference at all, just left it on ART as the handset does seem a little smoother.
[G3 Q&A, Help & Troubleshooting] McGyver dei poveri:
I would like to see if with a different ROM changes something. My S4 does it too, but it's WAY less audible.

The G3 sometimes also loses the AUX connection, it starts playing from the phone instead of from the car :/
[G3 Q&A, Help & Troubleshooting] hello00:
all sounds like a software issue
[G3 Q&A, Help & Troubleshooting] HoriCZ:
Jack symbol

When the phone detects headphones you can hear a lot of hum. When you somehow (multiple in/out reconnections) convince the phone that your headphones detects it as AUX (jack symbol) then there is almost none hummig sound.
[G3 Q&A, Help & Troubleshooting] McGyver dei poveri:
They have to remove this distinction and do like all other smartphones, just 1 way: PLUGGED or UNPLUGGED from the audio jack.

The skip track noise is higher than other smartphones, this must be corrected too.
[G3 Q&A, Help & Troubleshooting] genesissss:
Idk know what happened but my g3 seems to be fixed now. I can no longer hear any buzzing or hissing sounds when using my quadbeats.
[G3 Q&A, Help & Troubleshooting] Excrea:
Got almost the same problem. My hissing noise comes from both earpiece like an old vinyl or casette but more digitally corrupted, comes with music not continious and only with some (most) frequencies. It feels like codec issue but cant fix it with dps packs. Nothing happens when loud or no noise situations or when only one earpiece working.When i balance all the way right or left one nothing comes from other one.Diffrent formats or players doesnt change anything. My headphones sennheiser momentum, but tried with quadbeats and others all the same. :(
[G3 Q&A, Help & Troubleshooting] Christian H:
I had the same problem with my LG G3 in the UK. I went back to the retailer, Carphone Warehouse, and tried four replacements handsets, all with the same issue. In addition to having distortion in the left channel, all them produced a mono signal from the FM radio.

The customer service departments of LG, Vodafone and Carphone Warehouse were apparently unaware of this issue. I really wanted to have an LG G3, but music reproduction is important to me and I've now ordered an HTC One M8 instead.
[G3 Q&A, Help & Troubleshooting] cheetah2k:
I have HK D855 32gb and same issue but only using the stock music app and Pure Surround mode

If I'm using the Google music app, zero issues :good:

I would suggest its probably software as both Bluetooth and Wired headsets present the same issue

Seems to me that its the LG Music App.
[G3 Q&A, Help & Troubleshooting] Christian H:
My handset had the same left channel problem with the built in LG player and YouTube. I downloaded Poweramp and encountered the same issues. The noise was more disruptive with my Sony XBA2 earphones (12 ohm) than the supplied LG earphones (24 ohm) but still audible with my HD595 Sennheiser headphones (50 ohm).

I picked up an HTC One M8 today and although it too runs Android 4.4.2, the sound is perfect.
[G3 Q&A, Help & Troubleshooting] mitchell4500:
Problem is present but only noticeable sometimes

Using Shure SE846 iem, 8ohms. Good sound otherwise.
[G3 Q&A, Help & Troubleshooting] mingocr83:
Used spotify, no issues with headphones and aux cable..
[G3 Q&A, Help & Troubleshooting] ExiledLife:
Using M-Duo headphones and a cheap pair of Phillips headphones with no issue.
[G3 Q&A, Help & Troubleshooting] Avohkah Tamer:
Yeah, running into this same issue on my Verizon G3. It sounds like theoretically every device has this issue, can anyone confirm getting a replacement that doesn't do this, or if anyone has one that doesn't do this?

Edit: I have a pair of headphones with a cable that can be disconnected from the cans, so when I plug in the wire by itself first, my G3 detects it as a Line In rather than Headphones. Just tested the same song in both Headphones and Line In mode with the headphones, and I can confirm the hiss/noise is virtually nonexistent in Line In mode. Indication that it's a software issue?
[G3 Q&A, Help & Troubleshooting] flaring afro:
I have Sennheiser HD 419s and I don't have the issue. They're over ears, not IEMs.
[G3 Q&A, Help & Troubleshooting] Dak94:
I have the same sound problem with my new LG G3.

Do you know if it's hardware problem or software ?

Their is any solution ?
[G3 Q&A, Help & Troubleshooting] artee666:
Got this issue with AKG K450. In right ear it is better than in the left one, but it is still present. With bose QC15 I don't have this problem, but I experienced couple of time, that the phone didn't register that I plugged the cable in. And sometimes when changing tracks, there's crack in left ear. And cracking when plugging the headphones in :( It is showstopper for me, because I'm listening to music couple of hours per day
[G3 Q&A, Help & Troubleshooting] Matsunami:
This is the same issue as in G2. I have G2 and now G3 also.. so IT IS SOFTWARE ISSUE ! It will be fixed with fw 4.4.4. I've checked it on G2 - after installing CM11 (4.4.4) it disappeared, audio is clean. So calm down and do not return this nice phone :) I hope it will be soon, music is main feature in phone for me.
[G3 Q&A, Help & Troubleshooting] Dak94:
Thank you :)

i'm just quiet because i'm listening a loot of music by day so i wait for futur update.
[G3 Q&A, Help & Troubleshooting] Matsunami:
Yeah, me too. I was little disappointed that it is also present in G3, but it's fine we will wait for fix :) The most important thing... it's not a hardware issue.
[G3 Q&A, Help & Troubleshooting] deadkenny64:
What's strange is the fact that it isn't present in all devices. I have a D851 and the headphone audio with both cheap and high-end IEMs is as clean as anything I've used to this point. I do notice intermittant signal noise when it is charging but that is in both ears and similar to other phones.
[G3 Q&A, Help & Troubleshooting] ScrapMaker:
I am not convinced it is PURELY a software issue -- but I believe we can get a workaround using software. On my Sprint G3, I get static

only

when charging. This is a ground-loop issue. I've had similar issues on my HTC M7 and Galaxy S5. The HTC was by far the best though. The problem is when the audio chip is disabled (to save power in no-output scenarios,) it causes an internal ground-loop. This is similar to improperly grounding something in the car audio world, and you are getting power feedback through the speakers, (IE "alternator whine.")

The hardware solution would be to PROPERLY ground these components in the phone chassis, despite the current state of the audio codec/chipset. When the chip is enabled, presently, it properly grounds the 3.5mm connector.

The software solution would be to trick the audio codec to remain on/grounded even when playing no sound. Output NO SOUND, rather than actually power itself off.

My problem may be slightly different than yours, as my buzzing/humming/static is in both channels, and goes away completely when on battery power. Currently using Bose QC-2 headphones -- yes, I know they are overpriced garbage, but I got them for free almost 8 years ago.

---------- Post added at 05:36 PM ---------- Previous post was at 05:34 PM ----------

I'd be willing to bet I could externally ground my headphone jack to the USB port and all the hum would go away. I've had to do that with defective car headunits in the past.
[G3 Q&A, Help & Troubleshooting] SomeGuyDude:
Is this related to carrier at all? T-Mo with absolutely NONE of the hiss/noise issues here.

Also, if you want noise-canceling, Bose does it best. Period. For pure SQ they're okay, but when it comes to silencing the world around you there's no topping Bose.
[G3 Q&A, Help & Troubleshooting] ScrapMaker:
I would argue that their price range, they are actually hands-down the worst at noise-cancelling and true audio reproduction. Sennheiser and Samsung make superior products for less.

To answer your question, it could easily be a carrier-specific problem. The components vary slightly.
[G3 Q&A, Help & Troubleshooting] Tetractys:
Temporary workaround

Preface:

I have a G3 D-855 2/16. Since i love to listen hifi music, i choose this phone. I have too the same issue *but* only with a certain type of headset.

I noticed, after many tests (i have three types of BOSE- AE2, IE2i and QC3 and one Sennheiser HD650 as headphones), that *only* the highest impedance headset (HD650 - 300 Ohm) does *NOT* have the issue in any circumstance. The lower impedance one ones (AE2 and QC3) have the issue. The IE2i too has the issue, very very reduced.

Furthermore is my opinion that the "plug reconnaissance" function implemented by LG could be very buggy at the moment in fact, many times, plugging in the HD650 - a pure headset with no mic at all, software think that a headset+mic has been inserted so the "voice assistance" starts.

Workaround working for me:

- Switched from Dalvik cache to ART

- The automatic regeneration of bytecode for every application (even those deputed to audio), occurring just after the reboot with ART, removed completely the issue for me

- Every headphone retested i this now works perfectly (as headset+mic, headphone, or AUX). No hissing. No scratching. :good:

Furthermore ART works like a charm.

Let me know :)
[G3 Q&A, Help & Troubleshooting] Batfink33:
I had it on my unlocked no carrier European version before I returned it so it can't be carrier related.
[G3 Q&A, Help & Troubleshooting] mitchell4500:
This is very true. I tried this with my Sure 846 and this fixes the static.

The static annoys me more and more. Any ideas
[G3 Q&A, Help & Troubleshooting] Varming:
I can confirm this too - after connecting my Fiio E6 which the phone recognizes as line-in the problem is gone. Then I get a need problem though and that is that the "agent" you normally get when pressing the middle button on a phone headset pops op over and over. I don't know how to disable that function which I will never use.
[G3 Q&A, Help & Troubleshooting] Varming:
I just spoke to LG Support and it's a known problem by now. They are working on a fix in a new update but he couldn't say when we could expect this update. According to the support it might help to do a hard reset but it might not too.
[G3 Q&A, Help & Troubleshooting] olivierdo:
so patience, now
[G3 Q&A, Help & Troubleshooting] EpicChineseTime:
I was on the other similar thread... i was running V10a and had this problem with my Bose QC20... after updating it to V10e the problem has gone...

Sent from from my LG-D855
[G3 Q&A, Help & Troubleshooting] Varming:
Mine was only on V10a for maybe an hour when I got it, then I upgraded OTA to V10e - and got the problem.
[G3 Q&A, Help & Troubleshooting] olivierdo:
yes strange mine too normally the problem will be resolved in the next update
[G3 Q&A, Help & Troubleshooting] strongyin1977:
If you plug usb adapter first,then plug in the headphone,you can disable the hissing noise in music,but when you plug out the headphone,hissing noise will comeback again,that is hardware or software problem?
[G3 Q&A, Help & Troubleshooting] olivierdo:
hissing noise is still there on the V10G now you know..
[G3 Q&A, Help & Troubleshooting] Dinger558:
If it is as you say the problem is most certainly software.

Edit: This actually works, only when you plug into a USB power adapter, doesn't work with a PC.

And the change sticks so long as the headset is plugged in.

Good find.
[G3 Q&A, Help & Troubleshooting] EpicChineseTime:
Upgraded from v10e to v10g, got the buzzing on the left channel again.

Annoying.

Bose QC20

Sent from from my LG-D855
[G3 Q&A, Help & Troubleshooting] Racer-1:
Hissing is still there with the V10i test version.

I fixed it temporarily until the next reboot. I have to take a call in the hissing is gone.
[G3 Q&A, Help & Troubleshooting] strongyin1977:
I change the new one,the hissing sound change from left to right side,the new one build date is 30/7,so i think that is hardware problem,i would wait the note 4 in next month,so disappoint to LG!
[G3 Q&A, Help & Troubleshooting] Racer-1:
I don't think it's a hardware problem.

For me it works flawless if I take a call before, so it can't be a hardware problem.

I don't know why the call fixes the issue until the next reboot, but it works. And that's why I think it is cleary a software issue.

Btw I have V10i test version installed.
[G3 Q&A, Help & Troubleshooting] strongyin1977:
I hope you are right,but my problem is music and movie through the headphone(sony xba40),not the call,can you test it again listen music or movie in very silence place,buy the G3 only one week,i don't want to change the version,thnaks!
[G3 Q&A, Help & Troubleshooting] EpicChineseTime:
The microphone doesn't work, the phone detects it as AUX OUTPUT.... and not headset.

Sent from from my LG-D855
[G3 Q&A, Help & Troubleshooting] Racer-1:
Yes, that's my problem too.

Hissing mainly in the left channel of the headphones. If I take a call with my phones the hissing with music/videos is gone until I reboot the phone.
[G3 Q&A, Help & Troubleshooting] strongyin1977:
Thanks you so much!Your method like work,make a call first,hissing is gone until reboot.Can someone test again,thanks!
[G3 Q&A, Help & Troubleshooting] Racer-1:
No problem. Hopefully this will get fixed with one of the next updates after V10i.
[G3 Q&A, Help & Troubleshooting] grodronos:
It is not working, immediatelly after call the hissing sound is still there.
[G3 Q&A, Help & Troubleshooting] Racer-1:
Maybe it doesn't work for every phone, but at least for some phones.
[G3 Q&A, Help & Troubleshooting] strongyin1977:
Cannot make a call with headphone,make a call first,then connect the headphone,may be work。wait for result 。