answered
2017-12-01 19:51:32 +0300
TL;DR: Volume adjustment for media (and call) is done via predefined audio levels in the files of the /var/lib/nemo-pulseaudio-parameters/algs/mainvolume/ directory. A quick and dirty solution for integrated speakers and headphones would be (Warning: this also changes call voulme adjustment, which might not be what you want):
cd /var/lib/nemo-pulseaudio-parameters/algs/mainvolume/
devel-su
mv ihf ihf.orig
copy btmono ihf
Well, almost four years late, so this might be considered necrobumping ^_^
I was wondering about the same thing, since I have found the integrated speakers of my Xperia X too loud on the lowest non-mute setting (yes, you have read correctly: too loud, I'm one of these low-noise-people)... anyway, after having played around with a few files, trying to find a way to adjust sound levels, I discovered (... well, it was a discovery for me ^_^) that none of these changes actually worked and the volume values seemed to be hard coded.
So I looked around a bit more and found the directory /var/lib/nemo-pulseaudio-parameters/ with two subfolders which (indirectly) contain a bunch of files.
Now obviously I'm only talking about my Xperia X here (I don't have my Jolla 1 at hand). The file I was looking for was /var/lib/nemo-pulseaudio-parameters/algs/mainvolume/ihf (afaik, ihf stands for "integrated hands free", which describes the builtin speakers), which sets two values: x-nemo.mainvolume.call and x-nemo.mainvolume.media. Now, since I'm a lazy bum, I just made a backup of the file, removed the media line with its 12 values and jut replaced it by the line of the btmono file (which has 15 values). After a reboot of the device everything worked just as expected.
Now obviously you, my dear reader... yes you! ;-) ... could create a file containing as many of these predefined values as you like to achieve whatever fits your ears... hell, you coul probably create a bunch of more files for the /var/lib/nemo-pulseaudio-parameters/modes/ directory of folders - these are all (well, all that I had a look at) links to the files in the algs/mainvolume folder, which could give you a really unique volume adjustment experience for whatever possible scenario you could think of...
Anyway, I hope, I could help someone. Have fun!
Was just thinking about this yesterday in a bus. Couldn't quite get the music volume right for my earbuds. So, seconded.
ZZB ( 2014-01-12 12:33:34 +0300 )editI would also love to see an enhancement on this behaviour. :)
Alex ( 2014-02-09 14:48:27 +0300 )editI have the same problem, we need more fine-grained control over the volume. Either its too quiet or too loud...
vasavr ( 2014-03-23 14:32:49 +0300 )edit