Public bug reported: Setting the volume to 100% on the Master channel of my Terratec Aureon 7.1 Space (ICE1724) equals a gain of +128 dB which makes the sound distorted:
r...@runescomp:~$ amixer -c 1 sset Master 100% Simple mixer control 'Master',0 Capabilities: pvolume pswitch Playback channels: Front Left - Front Right Limits: Playback 0 - 255 Mono: Front Left: Playback 255 [100%] [128.00dB] [on] Front Right: Playback 255 [100%] [128.00dB] [on] 0 dB gain is around 50% (but not quite): r...@runescomp:~$ amixer -c 1 sset Master 50% Simple mixer control 'Master',0 Capabilities: pvolume pswitch Playback channels: Front Left - Front Right Limits: Playback 0 - 255 Mono: Front Left: Playback 128 [50%] [1.00dB] [on] Front Right: Playback 128 [50%] [1.00dB] [on] r...@runescomp:~$ amixer -c 1 sset Master 0dB Simple mixer control 'Master',0 Capabilities: pvolume pswitch Playback channels: Front Left - Front Right Limits: Playback 0 - 255 Mono: Front Left: Playback 127 [50%] [0.00dB] [on] Front Right: Playback 127 [50%] [0.00dB] [on] r...@runescomp:~$ lsb_release -rd Description: Ubuntu karmic (development branch) Release: 9.10 r...@runescomp:~$ apt-cache policy alsa-base alsa-base: Installed: 1.0.20+dfsg-1ubuntu4 Candidate: 1.0.20+dfsg-1ubuntu4 Version table: *** 1.0.20+dfsg-1ubuntu4 0 500 http://archive.ubuntu.com karmic/main Packages 100 /var/lib/dpkg/status ProblemType: Bug Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: rune 2436 F.... pulseaudio /dev/snd/controlC1: rune 2436 F.... pulseaudio Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0xfdff8000 irq 22' Mixer name : 'Realtek ALC888' Components : 'HDA:10ec0888,147b0000,00100001' Controls : 40 Simple ctrls : 22 Card1.Amixer.info: Card hw:1 'T71Space'/'Terratec Aureon 7.1-Space at 0xbf00, irq 22' Mixer name : 'ICE1724 - multitrack' Components : '' Controls : 56 Simple ctrls : 33 Card2.Amixer.info: Card hw:2 'HDMI'/'HDA ATI HDMI at 0xfdcfc000 irq 17' Mixer name : 'ATI R6xx HDMI' Components : 'HDA:1002aa01,00aa0100,00100000' Controls : 4 Simple ctrls : 1 Card2.Amixer.values: Simple mixer control 'IEC958',0 Capabilities: pswitch pswitch-joined Playback channels: Mono Mono: Playback [off] Date: Wed Sep 30 22:12:52 2009 DistroRelease: Ubuntu 9.10 NonfreeKernelModules: kvm_intel kvm fglrx Package: alsa-base 1.0.20+dfsg-1ubuntu4 PackageArchitecture: all ProcEnviron: LANG=en_DK.UTF-8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 2.6.31-11.36-generic SourcePackage: alsa-driver Uname: Linux 2.6.31-11-generic i686 UserAsoundrc: # ALSA library configuration file # Include settings that are under the control of asoundconf(1). # (To disable these settings, comment out this line.) </home/rune/.asoundrc.asoundconf> ** Affects: alsa-driver (Ubuntu) Importance: Undecided Status: New ** Tags: apport-bug i386 -- [karmic] 100% volume corresponds to +128 dB gain (distorted sound) https://bugs.launchpad.net/bugs/439619 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs