Changes to mixer_paths_tavil.xml lost in the reboot

[kadyt]

As this post https://forum.xda-developers.com/showpost.php?p=78125891&postcount=43 describes, I modified mixer_paths_tavil.xml changing the AVC Volume value in attribute headphones-hifi-dac, from 15 to 6, in order to achieve the AUX volume values in normal mode

The file mixer_paths_tavil.xml is saved correctly. Then I mount /vendor read-only again and remount, and I check that the file remains changed with the modification done. The modification date timestamp reflects the change

But no effect in the sound

So I guess I should reboot the phone for the change takes into effect. But then, after the reboot, the mixer_paths_tavil.xml is again the original one without the changes (and the mofication date is Dec 31 2008, the original ...)

So how should I edit this file to keep the changes with the reboot?

I'm on Pie

Thanks in advance

 

[lingo2012]

I know with my v30 i changed values in mixer_paths tavil.xml set permissions reboot and I was all good but my lg g7 im still trying to unlock my bootloader with the instructions but after updating magisk manager I have no root to finish the rest of the commands. I wish I could edit this same file and see whats going on and why it wont stick after reboot.

 

[ShuAK]

I am also facing the sam issue my bootloader is unlocked and i am rooted on android 10. Changes dont stick after reboot.

 

[ShadoV90]

First thing is make or edit magisk module to have this file changed. Second thing is make a file called service.sh (with permissions rw- r-- r-- or 0644)
In this file you need to write

killall audioserver

Explanation: Vendor partition in pie and android 10 is impossible to edit in case of LG G7. You need to have this file modified in magisk module with proper permissions and catalogs (vendor/etc). Even if you have audio related files modified in magisk module, there's second problem. Everything will be booted with default values. That's why you need service.sh with killall audioserver. This will reload all your audio related files at early stage of system boot, and new values will be applied.

 

[hasnawtahmed]

I am also facing the sam issue my bootloader is unlocked and i am rooted on android 10. Changes dont stick after reboot.

Can you please tell me that how you rooted your device?

 

[ShuAK]

Can you please tell me that how you rooted your device?

Are u bootloader unlocked? If not then follow this guide to unlock it.

https://forum.xda-developers.com/lg-g7-thinq/how-to/howto-updated-guide-to-unlock-t4168771

After that rooting is very simple process use QFIL to backup your boot_a img copy it to phone install magisk manager and and patch that file with magisk. Then write this img file to ur boot_a partition using QFIL and thats it.

 

[hasnawtahmed]

Are u bootloader unlocked? If not then follow this guide to unlock it.

https://forum.xda-developers.com/lg-g7-thinq/how-to/howto-updated-guide-to-unlock-t4168771

After that rooting is very simple process use QFIL to backup your boot_a img copy it to phone install magisk manager and and patch that file with magisk. Then write this img file to ur boot_a partition using QFIL and thats it.

I have unlocked bootloader. Qfil gives an error something like firehose failed or download fail somethinh like that.

 

[ShuAK]

First thing is make or edit magisk module to have this file changed. Second thing is make a file called service.sh (with permissions rw- r-- r-- or 0644)
In this file you need to write

killall audioserver

Explanation: Vendor partition in pie and android 10 is impossible to edit in case of LG G7. You need to have this file modified in magisk module with proper permissions and catalogs (vendor/etc). Even if you have audio related files modified in magisk module, there's second problem. Everything will be booted with default values. That's why you need service.sh with killall audioserver. This will reload all your audio related files at early stage of system boot, and new values will be applied.

Where i create service.sh file?

@hasnawtahmed try another pc if u can coz i faced the same issue on my laptop i have windows 7 and i cannot access partition data but i have a windows 10 PC and in that i can easily access and modify.

 

[hasnawtahmed]

First thing is make or edit magisk module to have this file changed. Second thing is make a file called service.sh (with permissions rw- r-- r-- or 0644)
In this file you need to write


Where i create service.sh file?


@hasnawtahmed try another pc if u can coz i faced the same issue on my laptop i have windows 7 and i cannot access partition data but i have a windows 10 PC and in that i can easily access and modify.

I'm also using a windows 10 pc

 

[ShuAK]

Then reinstall drivers

 

[ShadoV90]

Where i create service.sh file?


@hasnawtahmed try another pc if u can coz i faced the same issue on my laptop i have windows 7 and i cannot access partition data but i have a windows 10 PC and in that i can easily access and modify.

You can create that file in main module catalog.

 

[ShuAK]

I created service.sh and copy it inside a dual speaker magisk module zip file.

Yep thnx man its working now sounds are too much lowder

 

[kadyt]

I created service.sh and copy it inside a dual speaker magisk module zip file.

Yep thnx man its working now sounds are too much lowder

Would you mind to share the modified module? Thank you in advance