High Impedance Mode *Off*? - LG V30 Questions & Answers

Hi folks!
I've found a TON of coverage/mods for high impedance mode but I'm actually having the opposite problem.
Ya see, I have a few pairs of old Sennheiser IE-8 IEMs that I like to use most of the time with this phone. Long story short the cables are a little finicky and, using Hi-Fi Status, I regularly have go jiggle things around to get the phone to realize it's not HIM or AUX I need, just normal regular headphones guy mode. If I get frustrated and leave it then I'm stuck with the constant hiss and poor audio quality at lower volumes. I do not have this detection issue with my V-Moda M-100 cans.
Is there a way to toggle off HIM once it's already activated, or temporarily prevent it from activating in the first place? I have limited funds and the cost of replacing the cables on these old things is mostly unfeasible, and I'm sure having to re-seat the IEMs a few times every evening isn't doing any favors to what remains of the cable's integrity (or my sanity).
Cheers

Spiricore said:
Hi folks!
I've found a TON of coverage/mods for high impedance mode but I'm actually having the opposite problem.
Ya see, I have a few pairs of old Sennheiser IE-8 IEMs that I like to use most of the time with this phone. Long story short the cables are a little finicky and, using Hi-Fi Status, I regularly have go jiggle things around to get the phone to realize it's not HIM or AUX I need, just normal regular headphones guy mode. If I get frustrated and leave it then I'm stuck with the constant hiss and poor audio quality at lower volumes. I do not have this detection issue with my V-Moda M-100 cans.
Is there a way to toggle off HIM once it's already activated, or temporarily prevent it from activating in the first place? I have limited funds and the cost of replacing the cables on these old things is mostly unfeasible, and I'm sure having to re-seat the IEMs a few times every evening isn't doing any favors to what remains of the cable's integrity (or my sanity).
Cheers
Click to expand...
Click to collapse
not sure if this work, but i just throw it here for you to test it

Related

[Q] Problems with audio jack

Hi all,
to my great frustration, I've discovered that my SGS2 line-out / headphones jack seems to have a slack joint, i.e. if you turn a connected plug around its long axis, a crackling sound is heared in the speakers and at some angular positions the stereo signal will be reduced to mono (i.e. one speaker gos silent). With one device (mobile outdoor speaker) I even had no sound at all at when inserting the plug with the wrong "orientation".
Did anybody experience the same problem or am I just out of luck here?
I am wondering whether sending back the device to the retailer (Amazon) or directly to Samsung (I'm situated in Germany) will yield the faster round-trip time, any experiences here?
Thanks!
PS: I know this may be a stupid question but can somebody PLEASE tell me how to search for multiple keywords with AND logic in this forum? Tried "+word +word" and "word AND word" (without the quotes) but nothing seems to work.
Are you using the headphones that came with it? My better half went through 4 sets of the stock samsung headphones with her original Galaxy S and all produced the same issue of losing one channel after a matter of days/weeks. having the jack inserted to about 2/3rds is a workaround but not ideal as you still lose some frequencies and it's insecure... They're just a bit pony.
No, I used different kind of headphones, including Sennheiser in-ear headphones and a standard male-male audio jack connected to some bigger hifi system. With some jacks I did not encounter the problem, but most of them lost some part of the signal with some orientations: I persume that the manufacturing tolerance of the jacks also plays a role...
Anyway, it's definitely not a problem of the jacks but of the device since I tried it with the SGS2 of a friend yesterday and it worked with the same jack that made problems with my device.
I will proceed sending my phone to Samsung for repair, I hope that won't take to long *sad looking*, I am so used to it now, it's card to survive to weeks without it.
I had the same problem, all I had to do was insert headphones cable "HARDER" into the audio jack until I herd a "click" sound.
I was way to over protective of this phone when i first had it, and wanted to handle too much with care, forced the dam cable in, and "click", sounded like it snapped into place, the audio worked correctly without cracking noise or without the need to wiggle to cable get clearer sound.
Perhaps your friends SGS2 is already used to headphone being inserted, but yours not. Just add a little pressure until you hear clip into place.
If this doesnt help, then repair or return.
Thanks for the hint, but unfortunately I had the jack inserted to the very end, so this was not the problem... sent in for repair now, let's see what happens.
I have a fix for you i think!!!!!!!!
ok . when i got my s2 like 4 days ago (at&t usa version) i noticed that when i plugged into my aux cable in my car that it was low sound cracking more volume on the left side , very annoying . NOW FOR A SIMPLE FIX FOR SOME TO TRY! PLUG IT IN ALL THE WAY! i noticed when plugging it in i wasnt fully plugging it in . it should go all the way down FULLY! the sound is perfect once this is done . I HOPE THIS HELPS YOU !!!!!! good luck

Headphone bug? uneven volume

I plugged my headphones in for the first time today and i realized that the left side was quieter than the right. And I unplugged it and replugged it in and it was fine. Then I tried it again and the left side was lower again. I'm not sure what's causing this or if my tablet is defective. But it seems like a hit or miss on getting even volume from both sides.
Anyone else having this problem or can test it out?
I have te same issue and it happens every time I plug in headphones and its annoying.
For me this only happened when I use my SGS2 headphones on Nook.
Actually, I found that SGS2 headphones only work well on the SGS2. With my laptop they have tons of noise, on nook sometimes I have uneven volume.
Although on SGS2 they have the best sound I've ever heard in headphones..
Have you guys tried other headphones?
I only have the one pair of head phones and they are a generic brand from dollar general and they dont have any issues when i use them with either my pc or psp or phone for that matter
Montisaquadeis said:
I only have the one pair of head phones and they are a generic brand from dollar general and they dont have any issues when i use them with either my pc or psp or phone for that matter
Click to expand...
Click to collapse
My 5$ noise isolation headphones work just fine? O_O
Montisaquadeis said:
I have te same issue and it happens every time I plug in headphones and its annoying.
Click to expand...
Click to collapse
This.
Every single time.
no issues here.
No issues here.
Headphone bug
Yes I too have that problem. Glad to see that it's not just me & mine.
Stupid question - for those having issues, have you tried wiggling or rotating the plug once it is plugged in? Sometimes I find if I have a spot of oxidization on the plug it will cause said uneven volume. It could explain the difference that occurs when you unplug/plug back in.
Another thing to try would be to plug them in when the device is asleep to see if that helps. If there is anything that tries to reduce the "pop" of the sound of plugging in the headphones it *might* affect how they sound after the fact.
Just grasping at straws here based on my experience with other devices.
I was having this problem until I realized I only had my headphones plugged in half way. Don't mean to be a jerk, but have you tried plugging your headphones in just a little further?
Sent from my DROID BIONIC using Tapatalk
no amount of fiddling with the plug helped me at all still have the issue and its annoying since the speaker isnt loud enough when I am out and about.
Another thing to consider - another issue I've had with certain device/headphone combos is that some headphone jacks either don't have a long enough plug or the plastic jacket of the jack interferes just enough with the plug in the device to affect sound (essentially related to downsay's comment). Try a cheap pair of 'phones from the dollar store with a simple jack and see if the problem persists. If so, perhaps the device is defective...
These are a cheap pair of head phones from dollar general lol.
Edit: Plugging the headphones in while the device was asleep seems to have fixed the issue for me for now. Sound is equal in both cans now
I have tried 4 different earphones, they have been plugged in all the way. Some people have no problem, so I'm beginning to think this is a hardware defect. I'm going to exchange mine and will let you guys know if there is a difference. I'll also try out the display model and see if it suffers from this problem.
Glad to hear you got them to work. Please do let us know how it goes with returning the nook tablet.
Sent from my DROID BIONIC using Tapatalk
I replaced my Nook twice partially due to this issue. Same problem on all three and it's always the left channel that is not connecting properly. I have found that I can get a good connection by plugging the jack in slowly. I think this is more a software issue than a hardware issue.
Yea just exchanged my tablet as well and the same issue is there as well as the one at the store. Plugging in slowly does help. Just before it engages the last click, if you hear both channels you're golden. Hopefully this is a software issue because it seems to be random. Unfortunately the one I exchanged has a creaking case, so now back to exchange again.
I stopped by Radio Shack this afternoon and purchased a $5 female to male 1/4" stereo connector. It seems to have solved the problem. I had similar problem years back with an iPaq PocketPC. Due to the shape of the hole on the iPaq/Nook, the headphone/earphone connector isn't inserting deeply enough.
Another solution would be to use something like a Dremel Mototool and shave away some of the excess material on the headphone/earphone adapter, so it can insert a little bit deeper.
ibgap said:
I think this is more a software issue than a hardware issue.
Click to expand...
Click to collapse
What is everyone testing their audio on? The stock media player? Video (what program)? Is it on every application you try?
I haven't had any issues with audio in games, websites or MX player at all other than a loudish pop when some programs start up, but I'm using a set of Denon stereo headphones (so, good (large/long, gold) headphone plugs on it, jiggling the connection does nothing).

[Q] Is Spirit FM safe?

I have heard many reports atleast on i9000 (Galaxy S), that Spirit FM has broke external- and internal speakers.
Is this issue only on i9000, or on i9100 too?
Have used it mostly with headphones.. No problems so far.
I would say proceed with caution. I've installed Spirit FM for the first time. I've always been reluctant after reports of it killing speakers, 21 Galaxy S' according to the developer. What I will say is this, it's a well-known fact that volume alone doesn't kill speakers, the frequency is just as important and therefore the audio/signal generated (whether it be music, talking, noise) is a key factor. That is why a cheap set of OEM car speakers (usually made to run at anywhere from 15-30 watts) can often handle a high quality head unit that outputs 40 watts, little noise, with good equalization and most normal users are smart enough to leave off the heavy bass. In truth, volume is an important factor, but not the definitive one.
I installed Spirit today, and immediately plugged in my headphones. I don't use my FM Radio on Speaker Mode. The first thing I noticed tuning in to the first station was that it was incredibly bassy. Remember what I said about frequencies? Low volume unfiltered bass can do just as much damage to a speaker as something normal played at ultra high volume. It may have been my earphones (cheap pair), it may have been Spirit. I don't know, but it convinced me that I don't want to even try it off headphone mode.
I will take a risk later, I will drop the volume and pull the earphones out to see if it automatically reverts to speaker mode. If it does, it's uninstalled straight away. I can't take the risk of blowing my speaker. If it dies and says insert antenna, I will happily go on using this software although I don't like the idea of being able to press Speaker at the bottom by accident. I'll have to immediately minimize it when using it in the future.
OK, i pulled the cable out. It doesn't switch to the speaker automatically. This is good.
In my opinion, the app is worth keeping but be careful with it. I don't exactly know under what conditions the Speaker blows occur, but they do happen, so I'd suggest only using headphone mode only.

Audio qulity from headphone jack

Just wanted to know if anyone else noticed faint buzzing/scratching/hissing noises coming out of their headphone jack...
(and yes I have tested several headphones/earbuds and tested with my MDRv6's all with the same results. Its definitely the phone not the headphones)
When I insert my headphones there is a quick beeping sound that plays for a second or so then goes quiet.
When music is playing, especially soft music (a particular song was Instant Crush; Daft Punk) there is a hiss in the background, specifically when certain tones play.
It was terribly noticeable right at the beginning of a few songs, especially the one I listed above.
I also have button sound effects enabled. So When I press one of the soft UI buttons it makes a tick noise. However for about 5 seconds after the tick there is a long hiss then silence until I press another button.
The volume of the hissing/scratching noises is directly related to the actual volume of the device and the note playing.
Im on stock build 11c w/root, and I havent found a lot of info about this problem.
Just wondering if anyone has noticed this, or if this is a known issue?
If your phone is warranteed, I would bring it in
The G3 boasts an AMPLIFIED 1 watt sound speaker, which means there is a powered sound processor.. Unless the jack needs to be cleaned, I would lean toward thinking there is a defect in your phones jack, or sound assembly. I think its more than likely a defective jack, especially if there are no sounds like you are describing when headphones are not in use
Yeah the phone is brand new. I think I'm going to RMA....
Sent from my VS985 4G using XDA Free mobile app
I've noticed it. Seems to be worse when charging.
Verizon remotely detected root, warranty voided.
Posted about it here.
http://forum.xda-developers.com/showthread.php?p=57355721
Word of warning before calling Verizon
Sent from my VS985 4G using XDA Free mobile app
nuke235 said:
Just wanted to know if anyone else noticed faint buzzing/scratching/hissing noises coming out of their headphone jack...
(and yes I have tested several headphones/earbuds and tested with my MDRv6's all with the same results. Its definitely the phone not the headphones)
When I insert my headphones there is a quick beeping sound that plays for a second or so then goes quiet.
When music is playing, especially soft music (a particular song was Instant Crush; Daft Punk) there is a hiss in the background, specifically when certain tones play.
It was terribly noticeable right at the beginning of a few songs, especially the one I listed above.
I also have button sound effects enabled. So When I press one of the soft UI buttons it makes a tick noise. However for about 5 seconds after the tick there is a long hiss then silence until I press another button.
The volume of the hissing/scratching noises is directly related to the actual volume of the device and the note playing.
Im on stock build 11c w/root, and I havent found a lot of info about this problem.
Just wondering if anyone has noticed this, or if this is a known issue?
Click to expand...
Click to collapse
Just got my G3 a week ago and didnt use headphones until I read your post, I tested many different songs with different players, stock player, google player, Iheart radio, pandora, etc, headphone sound is crystal clear on mine, I dont get any beeps either like you described, I did notice you need to make sure the jack is pushed in good and tight, I put it in and thought it was all the way in and sound was crappy, pushed a bit harder and it clicked in good and sound was great, do you have a case that may be preventing the jack from being pushed in all the way, I had a phone in the past that this happened to me with, had to cut away some rubber on the jack to make it fit snug, if none of those are the issue, I would look into a warranty claim. I am using the beats audio earbuds that came with my HTC M7 I had before this phone.
kchinth said:
I've noticed it. Seems to be worse when charging.
Click to expand...
Click to collapse
That could be the issue. I know on the 2012 Nexus 7, it's really bad. It's supposedly due to the microUSB port and the headphone jack sharing the same circuit, or some engineering thing like.
Wonder if it's the same or if they didn't shield the headphone jack very well and it's picking up interference from the microUSB port when charging?
I didn't want to leave this up in the air so I figured I would post an update.
I replaced my G3 through Verizon for a brand new unit. My first phone was of an earlier batch (came with the 10b update) the second one was of a later batch and had 11b pre-installed.
Both phones had the same issue. There is a hissing noise/distortion that comes from the headphone jack. Even when not playing music.
I noticed it on other phones too but not anywhere nearly as much. I understand that any audio source is going to have a little background interference but the G3 definitely has a more significant issue than others.
However it seems to be entirely dependant on what headphones you are using.
1st. I tested first with my Sony MDR-v6's which the problem is most noticeable on. Extreme hissing/background noise.
2nd. Then I used a pair of Audio Techina ATH-PRO500's and the problem was almost unnoticeable.
3rd. I also tried my Steel Series Siberia v2's and the problem was again almost completely gone.
4th. I also used my receiver at home. JVC 5.1 channel receiver with RCA speakers and a Kenwood sub, didn't notice the issue at all. However there where some occasional strange popping noises when no music was playing I didn't get on my GS3 or other MP3 player.
5th. Finally I tried the ear buds that came with my Galaxy S3 and the distortion was again totally noticeable with and without music playing.
This is most definitely an issue that totally depends on what headphones you are using not sure if it has to do with sensitivity or impedance (this is what most people think) however it is most definitely an issue. I saw a few threads saying that audio issues were a problem in Android 4.4.2 however LG/Verizon have yet to release a stock base on anything but.
I suppose I could flash AOSP 4.4.4 and see if the problem persists but I don't know if that would even be worth it.
2 phones and 4 headsets later this is starting to seem like either a software or a design issue.
However I have nothing but good to say about every other bit of this phone. Really besides the audio jack top notch all around.
Sent from my Stumped and Bumped Verizon LG G3
I might have found a workaround for this
I have tested 3 LG D855 and all of them have noise/static/high-freq leak from the processor out to the headphones. It might be a faulty design for the headphones amplification stage for headphones (when the headphones logo appears on the status bar). However, when using line level output (the jack appears on the status bar) the problem does not reproduce.
Therefore the workaround I've found is to trick the phone into line level output mode and then plug the headphones. To do this you need to plug in a 3.5mm jack extensor or a 2-to-1 3.5mm Y-adapter with no load, that's it, with nothing connected to it. At that moment, the phone will activate the line level output mode. Only after that you will connect the headphones, and you'll see there are no artifacts on the audio.
That being said, I'm not sure this will work with all kind of headphones as I have only tried with mines that are low-impedance ones, but on those it works perfectly. To be checked if the level of the signal in line mode is enough to drive other headphones.
In any case, it is a shame this happens with a high-end and expensive smartphone. I was hopping this will be fixed in a newer hardware revision but I got two replacements of mine and no luck. I have read somewhere this might be a flaw in Snapdragon 801, as it integrates completely the signal routings but isolates badly highfreq noise from processor stages, etc. etc. but I do not remember where I did read it unfortunately.
I hope this helps!
drondron said:
I have tested 3 LG D855 and all of them have noise/static/high-freq leak from the processor out to the headphones. It might be a faulty design for the headphones amplification stage for headphones (when the headphones logo appears on the status bar). However, when using line level output (the jack appears on the status bar) the problem does not reproduce.
Therefore the workaround I've found is to trick the phone into line level output mode and then plug the headphones. To do this you need to plug in a 3.5mm jack extensor or a 2-to-1 3.5mm Y-adapter with no load, that's it, with nothing connected to it. At that moment, the phone will activate the line level output mode. Only after that you will connect the headphones, and you'll see there are no artifacts on the audio.
That being said, I'm not sure this will work with all kind of headphones as I have only tried with mines that are low-impedance ones, but on those it works perfectly. To be checked if the level of the signal in line mode is enough to drive other headphones.
In any case, it is a shame this happens with a high-end and expensive smartphone. I was hopping this will be fixed in a newer hardware revision but I got two replacements of mine and no luck. I have read somewhere this might be a flaw in Snapdragon 801, as it integrates completely the signal routings but isolates badly highfreq noise from processor stages, etc. etc. but I do not remember where I did read it unfortunately.
I hope this helps!
Click to expand...
Click to collapse
Ive been having the same issue. I have a pair of Shure SE846 which are about 8ohms. I experience the poor audio, especially the noise in the left channel. I find that placing a call and then listening to music removes the left channel static but the sound is still kinda bad. Ill try your suggestion tonight and post back. Just wanted to let you know your not alone.
I despise my G3 because of this. Im looking to get a new phone unless I can fix this.
Nope, my sound is perfect on my high-end Sony over the ear phones. Crystal clear on pure stock G3 .
I haven't noticed any artifact issues on my phone when using headphones, however when I plug it into my vehicle and also plug in the charger that causes everything to go nuts. The USB interference causes a crazy amount of excess noise. I haven't ever actually tried listening to headphones while charging, so in the car is the only time I've ever noticed it. The same issue occurs when I plug in my Galaxy Tab Pro into the aux jack and charge it at the same time, so this is definitely not unique to the G3. I wish all phones had as good an amplifier as my HTC DNA does, I still use that thing for music because the sound is so good.
pitbull8265 said:
If your phone is warranteed, I would bring it in
The G3 boasts an AMPLIFIED 1 watt sound speaker, which means there is a powered sound processor.. Unless the jack needs to be cleaned, I would lean toward thinking there is a defect in your phones jack, or sound assembly. I think its more than likely a defective jack, especially if there are no sounds like you are describing when headphones are not in use
Click to expand...
Click to collapse
I'm having a different audio problem.
With headphones plugged in and listening to music using any player, the right side sound emits distortion/hissing noise at a certain frequencies. When I tested it with plugging a 3.5mm to 3.5mm to an external amp (JDS labs c5) the distortion/hissing noise is completely gone. So it's definitely not a faulty jack
The hissing is evident at the beginning of (first few seconds) Tina Area's Still Running and You set fire to my heart .
I'm testing it with sensitive iem (Westone Um3x).
So does this mean there is a problem with the internal amp of the g3 or more to do with the os bug that can be solved with a custom kernel or update.
Is this a common issue found on all g3s?
drondron said:
I have tested 3 LG D855 and all of them have noise/static/high-freq leak from the processor out to the headphones. It might be a faulty design for the headphones amplification stage for headphones (when the headphones logo appears on the status bar). However, when using line level output (the jack appears on the status bar) the problem does not reproduce.
Therefore the workaround I've found is to trick the phone into line level output mode and then plug the headphones. To do this you need to plug in a 3.5mm jack extensor or a 2-to-1 3.5mm Y-adapter with no load, that's it, with nothing connected to it. At that moment, the phone will activate the line level output mode. Only after that you will connect the headphones, and you'll see there are no artifacts on the audio.
That being said, I'm not sure this will work with all kind of headphones as I have only tried with mines that are low-impedance ones, but on those it works perfectly. To be checked if the level of the signal in line mode is enough to drive other headphones.
In any case, it is a shame this happens with a high-end and expensive smartphone. I was hopping this will be fixed in a newer hardware revision but I got two replacements of mine and no luck. I have read somewhere this might be a flaw in Snapdragon 801, as it integrates completely the signal routings but isolates badly highfreq noise from processor stages, etc. etc. but I do not remember where I did read it unfortunately.
I hope this helps!
Click to expand...
Click to collapse
Hi! This worked perfectly for me but for me instead of tricking the phone into line level output mode, I detaching one side of my headphones before plugging it into the headphone jack then reattached it afterwards. I'm using pair of sensitive iems (Westone um3x rc)
Everything is quit with no distortion, just how it should be!
One thing, is there an option within android or an app that can permanently enable line level mode ever time headphones are plugged in without having to trick it.
If so, I won't have to sent my phone for repair!
Also are there any disadvantages for using line level with headphones?
Fungus999 said:
Hi! This worked perfectly for me but for me instead of tricking the phone into line level output mode, I detaching one side of my headphones before plugging it into the headphone jack then reattached it afterwards. I'm using pair of sensitive iems (Westone um3x rc)
Everything is quit with no distortion, just how it should be!
One thing, is there an option within android or an app that can permanently enable line level mode ever time headphones are plugged in without having to trick it.
If so, I won't have to sent my phone for repair!
Also are there any disadvantages for using line level with headphones?
Click to expand...
Click to collapse
Using line out shouldn't make any difference on audio quality. It only disables the remote (buttons and microphone).
Would also really like a way to force the line-out mode. Btw, does this affect all G3s? Cause right now I'm not sure if it's worth the hassle of replacing it.
sulkie said:
Using line out shouldn't make any difference on audio quality. It only disables the remote (buttons and microphone).
Would also really like a way to force the line-out mode. Btw, does this affect all G3s? Cause right now I'm not sure if it's worth the hassle of replacing it.
Click to expand...
Click to collapse
I know but some how using line out causes the hissing from the right side to go away completely. Strange huh
Are you also having this problem?
I also don't want to return mine if it exists in all g3s and there's a easier work around.
Yea same thing. I have artifacts in the left channel except when I manage to force the phone to recognize the headphones as line-out. I did this with the adapter to test it and it's impractical if not impossible to use the same adapter all the time.
I'm gonna try doing this right this moment to see if it works: http://forum.xda-developers.com/lg-g3/help/hissing-noise-left-ear-playing-music-t2804065/page17
sulkie said:
Yea same thing. I have artifacts in the left channel except when I manage to force the phone to recognize the headphones as line-out. I did this with the adapter to test it and it's impractical if not impossible to use the same adapter all the time.
I'm gonna try doing this right this moment to see if it works: http://forum.xda-developers.com/lg-g3/help/hissing-noise-left-ear-playing-music-t2804065/page17
Click to expand...
Click to collapse
I don't use earphones with a volume remote or microphone so that's not a problem.
It could be more to do with the increase in output impedance but I might be wrong cos the volume level is identical to headphone out.
I'm also getting a lot of static background noise but it disappears after making and hanging up a call as mentioned in a thread.
But yeah a permanent fix by forcing it into line out or doing some changes in kernel would be much more convenient
Fungus999 said:
I don't use earphones with a volume remote or microphone so that's not a problem.
It could be more to do with the increase in output impedance but I might be wrong cos the volume level is identical to headphone out.
I'm also getting a lot of static background noise but it disappears after making and hanging up a call as mentioned in a thread.
But yeah a permanent fix by forcing it into line out or doing some changes in kernel would be much more convenient
Click to expand...
Click to collapse
Great news! I just tried the fix from that thread and it worked. Here's the post: http://forum.xda-developers.com/showpost.php?p=59601465&postcount=150
I'm using stock rom which had 3 mixer xml files and I edited 2 of them, mixer_paths.xml and mixer_paths_qcwcn.xml. Also, instead of changing the value to 0, I deleted the entire line as it was suggested later in the thread.
The artifacts/noise in the left channel are gone!
sulkie said:
Great news! I just tried the fix from that thread and it worked. Here's the post: http://forum.xda-developers.com/showpost.php?p=59601465&postcount=150
I'm using stock rom which had 3 mixer xml files and I edited 2 of them, mixer_paths.xml and mixer_paths_qcwcn.xml. Also, instead of changing the value to 0, I deleted the entire line as it was suggested later in the thread.
The artifacts/noise in the left channel are gone!
Click to expand...
Click to collapse
But mine is stock on stock Lollipop via official update and with the hiss coming from the right side.
Please excuses my ignorance but I know nothing about accessing and editing a ROM.
How do I get into the rom and into the file called system/etc"?

Headphone jack issue

Hi guys.
I have had this issue for awhile and have put it off thinking it was a headphone cable issue but it's not.
I have already tried cleaning with contact cleaner and rubbing alcohol.
My issue is that my phone will trigger "Google voice" search just by slight movement at the cable /jack junction. This is insanely annoying considering I bought this phone due to its audio prowess.
It will also automatically pause or change tracks with the same jack/cable movement.
I am Canadian and bought this from HK via ebay. I am one of those who almost never bother with warranties but obviously would seeing as I spend near a grand on this thing. How would I begin on a warranty claim?
Thanks.
Seems to be a common issue, unfortunately. I haven't really found a way to fix it yet.
How new is your device?
What type of finish is on the end of the cables ends?
I use this cable with almost no issue. Once in a while it will trigger voice when I plug in. But that's all.
https://www.amazon.com/gp/aw/d/B00F9KUF7O/ref=yo_ii_img?ie=UTF8&psc=1
I've also got a phone from HK prior to release in my country and have been struggling with this.
It looks to me that this is because of the way the phone detects your device. I've that the headphones that comes with the device and other earbuds works with no problems, but my bigger M40X for example have this.
The best solution I've found so far is this: plug it and leave it (not moving it at all) for about 10 seconds. After this the problem seems solved most of the time.
Unplugging and re plugging it several times also worked sometimes at the begging, but it was very frustrating and probably not so good for the longevity of the jack.
I'm actually about to make a factory reset for other reasons, but I'll post here if it makes any difference.
UPDATE: The factory reset did not fix the issue, but I have the impression it's triggering the high gain with my m40x as now I've noticed increased volume and no difference to when doing that trick of plugging the detachable cable first to the phone and then to the headset. Don't ask...
I had this issue a few times on my previous phone (Droid Maxx) when in the car, as I was plugging it in (usually when there was turbulence). I thought it was due to the tip of the plug contacting one of the other contacts in the jack. See this link for what the different parts of a headphone/mic combo plug or jack are. I'm not sure if your cable has all of those, but if the wrong ones touch maybe it triggers the mic to listen. Or internally your cable may be shorting between the different signals. Just spitballing ideas.
You know what guys, a friend of mine really liked my phone and got one as well. So when he got it I asked to him to test the jack problem with my headphones and it was simply not there. I do suspect this is a problem with the device. I'll try to get in touch with LG a second time for support (as the first time they asked me to get back to the country where I got it, the Philippines, and this is not really an option).
MrCogito said:
I've also got a phone from HK prior to release in my country and have been struggling with this.
It looks to me that this is because of the way the phone detects your device. I've that the headphones that comes with the device and other earbuds works with no problems, but my bigger M40X for example have this.
The best solution I've found so far is this: plug it and leave it (not moving it at all) for about 10 seconds. After this the problem seems solved most of the time.
Unplugging and re plugging it several times also worked sometimes at the begging, but it was very frustrating and probably not so good for the longevity of the jack.
I'm actually about to make a factory reset for other reasons, but I'll post here if it makes any difference.
UPDATE: The factory reset did not fix the issue, but I have the impression it's triggering the high gain with my m40x as now I've noticed increased volume and no difference to when doing that trick of plugging the detachable cable first to the phone and then to the headset. Don't ask...
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Funny you mentioned the volume increase. That is a trick I learned from someone in another thread as the standard gain setting for low impedance headphones was too weak. That made a vast improvement in volume and was a life saver because I bought this phone specifically for its audio abilities.
As for the Google voice thing the only thing I found that worked was going under apps and disabling the Google app which is ridiculous considering it kills Google on tap which is a big feature of android.
I am pretty sure this is being trigggered by the jack somehow engaging a contact. Explains why it's triggered when I move.
Drives me nuts. Read somewhere that MM fixed this but not for me. I will try enabling Google app and uncheck all the voice options and see if this helps.
You know what, after struggling long with this I've finally gathered the balls to buy a headphone jack part and replace it myself. I've done it with my old Nexus 4 (the jack actually broke there).
It takes a while to arrive, but I'll perform the change and post the result here.
Where I got it from:
http://www.ebay.com/itm/122034019463
I sometimes have the voice recognition and volume issue, but for me it appears to be an issue with my headphones (Bose MIE2i). I don't have the issue with any other headphone or cable. I have this issue when I fiddle with the in-line controls of the Bose (both this and the 1st pair of Bose). My belief was that it was due to poor shielding of conductors in the controller or shoddy wiring connections.
Did u ever solve the problem with replacement? Im having issues with left and right volume. Like a shorted cable, but bought new phones & still doing that.
Just in case anyone is still suffering from this problem, I made a discovery today. I've replaced the headphone jack in my v10 3 times thinking that they're just ****ty headphone jacks that break all the time, but in my case at least the fault wasn't the contacts inside the jack itself. I found that my problem was actually related to the push-down connector that clips to the motherboard. I had a hunch that keeping the phone in my pocket with headphones connected was slowly rocking it back and forth and would eventually disconnect it. In order to add more clamping pressure to the connector, I put 3 small slices of electrical tape on top of it before screwing the back down. On my walk home today, the left earphone would disconnect with literally every step that I made. After putting the electrical tape in the problem was solved.

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