Xperia Z5_Z5C_Z5P // static/hissing noise, audio error // bug report

[alphatact1cs]

First a very short introduction: I am from Germany and will studying computer science soon. If I have some freetime I help others with their phones on XDA and code some small things But now my problem:

=== Problem ===

Static / hissing noise through headphones and speaker while playing sounds (music etc.). If DSEE HX is enabled in audio settings while using the official Sony music app, the sound is perfectly clear.

DSEE HX ON + Sony Music App = perfect sound

DSEE HX ON + YouTube, PowerAmp, ... = static noise

DSEE HX OFF + Sony Music App ++OR++ YouTube, PowerAmp, ... = static noise

It seems that only the volume for media is affected. Playing the alarm clock sound through headphones and speaker is working fine.

=== affected devices ===

Sony Xperia Z5

Sony Xperia Z5 Compact

[Sony Xperia Z5 Premium] ?

=== android version ===

Android 5.1.1

Build Number: 32.0.A.6.200

IMPORTANT: I unlocked and rooted my phone for troubleshooting. I changed kernel (stock based insecure kernel to get root working). ROM is also stock.

=== useful links ===

There is a topic on REDDIT where other have this problem too.https://www.reddit.com/r/SonyXperia/comments/3riwsd/xperia_z5_statichissing_noise_in_headphones/

[gcalla]

I have the exact same problem, brand new phone and gutted! Please help!

[FC24]

Me too! I signed up 5 minutes ago exactly for this reason, z5, new, no brand. Perfect sound only with DSEE HX on.

[alphatact1cs]

The problem is, I dont think that this report will help anything.

[FC24]

Oh, I noticed that I can hear this noise even without headphones, both with and without DSEE HX on...so annoying!

[iNOZOMIPOWER]

Sounds like a hardware problem if you even tried different ROM and kernel...

[FC24]

I'm not sure: if it was a hardware problem, the static noise would keep even with DSEE HX on and headphones, but when I plug my headphones and turn DSEE HX on, sound is perfect.

[Chrisoutwright]

Hello, i just recently bought a sony xperia z5 premium dual. I am also using the NC750 headphones with noise cancelling. Sadly this feature is broken as i get throbbing sounds when it gets activated. My friend's xperia seems fine. I also notice the excessive white noise at low volume in wired headphones (s6 edge much less so). I will try my friends phone also then i may conclude if its a rampant problem.

[alphatact1cs]

### ATTENTION PLEASE ###

To all SONY XperiaZ5 users. Sony lost an user. Yes my friends. I have to pay 250€ because I unlocked an rooted my phone because I tried to solve the problem myself!

So, to all people that have the same problem: send your devices back to Sony Repair. There is no other solution!

[Uliwooly]

@alphatact1cs

if you unlock the bootloader you will void the warranty.