alsa-project/alsa-utils issue #32 was opened from MarioMey:
I want to raise and low volume with keys. This works, this rise the volume 20%:
`amixer set Master 20%+`
And every time I run this command, it rise 20% more. But, when I want to use the card (because I need to do this):
`amixer -c 0 cset name='Master Playback Volume' 20%+`
It doesn't work. It seems that amixer takes only "20%" value and doesn't care about "+" or "-".
I have Debian Buster, Mate desktop.
```
mario@debian:~/$ apt-cache showpkg alsa-tools
Package: alsa-tools
Versions:
1.1.7-1 (/var/lib/apt/lists/ftp.us.debian.org_debian_dists_buster_main_binary-amd64_Packages)
Description Language:
File: /var/lib/apt/lists/ftp.us.debian.org_debian_dists_buster_main_binary-amd64_Packages
MD5: 4d64eace7e51fb1fc1a18ed780ee5e62
Description Language: en
File: /var/lib/apt/lists/ftp.us.debian.org_debian_dists_buster_main_i18n_Translation-en
MD5: 4d64eace7e51fb1fc1a18ed780ee5e62
Reverse Depends:
ld10k1,alsa-tools
multimedia-jack,alsa-tools
Dependencies:
1.1.7-1 - libasound2 (2 1.0.16) libc6 (2 2.7) libgcc1 (2 1:3.0) libglib2.0-0 (2 2.12.0) libstdc++6 (2 5) as10k1 (0 (null)) as10k1 (0 (null))
Provides:
1.1.7-1 - as10k1 (= )
Reverse Provides:
```
Issue URL : https://github.com/alsa-project/alsa-utils/issues/32
Repository URL: https://github.com/alsa-project/alsa-utils
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