You can just turn up the volume by changing the standard volume using the standard CM File Manager in root mode or with adb terminal :
Open terminal and send:
edit the file with your favorite editor like this:
go back in your terminal and send:
Open terminal and send:
- adb root
- adb pull /system/etc/mixer_paths.xml
edit the file with your favorite editor like this:
- <path name="speaker">
- ...
- <ctl name="RX7 Digital Volume" value="69" />
- </path>
go back in your terminal and send:
- adb remount
- adb push mixer_paths.xml /system/etc/mixer_paths.xml
Just change, save, reboot and test.
This worked great for me.
Changed the speaker volume as well as the in-call as well.