2012-10-21 下午6:12 於 "Takashi Iwai" <<a href="mailto:tiwai@suse.de">tiwai@suse.de</a>> 寫道： > > At Sun, 21 Oct 2012 17:51:00 +0800, > Raymond Yau wrote: > > > > [1 <text/plain; UTF-8 (quoted-printable)>] > > 2012-10-21 下午4:42 於 "Takashi Iwai" <<a href="mailto:tiwai@suse.de">tiwai@suse.de</a>> 寫道： > > > > > > At Fri, 19 Oct 2012 11:15:29 +0800, > > > Raymond Yau wrote: > > > > > > > > does softvol plugin "master" has any preference over vmaster in amixer ? > > > > > > No, it shouldn't. > > > > Simple mixer control 'Master',0 Capabilities: pvolume pswitch > > pswitch-joined penum Playback channels: Front Left - Front Right Limits: > > Playback 0 - 255 Mono: Front Left: Playback 255 [100%] [191.00dB] [on] > > Front Right: Playback 255 [100%] [191.00dB] [on] > > > > the dB value change to 191dB > > > > it seem that alsa-lib is unable to find the correct tlv > > Something wild is merged in his system. It has a wrong "Master" > control without suffix. Also a strange "Pre-Amp" control is found > there, too. The string doesn't fix in kernel or alsa-lib codes at > all. > the softvol plugin allow user to define the name of the control and dB range <a href="https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1066814">https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1066814</a> the user has a fresh install of kbuntu 12.04 and found the volume too low for his alc887vd as he mention that he tried some asound.rc config Oct 15 11:55:24 xaser pulseaudio[1606]: ( 0.111| 0.006) [alsa-sink] alsa-sink.c: Requested volume: 0: 21450% 1: 21450% Oct 15 11:55:24 xaser pulseaudio[1606]: ( 0.111| 0.000) [alsa-sink] alsa-sink.c: in dB: 0: 191.00 dB 1: 191.00 dB Oct 15 11:55:24 xaser pulseaudio[1606]: ( 0.111| 0.000) [alsa-sink] alsa-sink.c: Got hardware volume: 0: 100% 1: 100% Oct 15 11:55:24 xaser pulseaudio[1606]: ( 0.111| 0.000) [alsa-sink] alsa-sink.c: in dB: 0: 0.02 dB 1: 0.02 dB Oct 15 11:55:24 xaser pulseaudio[1606]: ( 0.111| 0.000) [alsa-sink] alsa-sink.c: Calculated software volume: 0: 21336% 1: 21336% (accurate-enough=no) Oct 15 11:55:24 xaser pulseaudio[1606]: ( 0.111| 0.000) [alsa-sink] alsa-sink.c: in dB: 0: 190.98 dB 1: 190.98 dB did pulseaudio limited the sofware volume to some reasonable value or warned about the extra ordinary large dB of the hardware volume > > > > > > > > > > > > > > > <a href="http://www.alsa-project.org/db/?f=44b26f5cd37f33bfef2871ff1fd250301bdb5364">http://www.alsa-project.org/db/?f=44b26f5cd37f33bfef2871ff1fd250301bdb5364</a> > > > > > > > > control.32 { > > > > iface MIXER > > > > name 'Master Playback Volume' > > > > value 64 > > > > comment { > > > > access 'read write' > > > > type INTEGER > > > > count 1 > > > > range '0 - 64' > > > > dbmin -6400 > > > > dbmax 0 > > > > dbvalue.0 0 > > > > } > > > > } > > > > > > > > control.42 { > > > > iface MIXER > > > > name Master > > > > value.0 255 > > > > value.1 255 > > > > comment { > > > > access 'read write user' > > > > type INTEGER > > > > count 2 > > > > range '0 - 255' > > > > tlv '0000000100000008ffffec1400000014' > > > > dbmin -5100 > > > > dbmax 0 > > > > dbvalue.0 0 > > > > dbvalue.1 0 > > > > } > > > > > > > > Card hw:0 'Intel'/'HDA Intel at 0xfeaf8000 irq 43' > > > > Mixer name: 'Realtek ALC887-VD' > > > > Components: 'HDA:10ec0887,10438445,00100302' > > > > Controls : 42 > > > > Simple ctrls : 22 > > > > Simple mixer control 'Master',0 > > > > Capabilities: pvolume pswitch pswitch-joined penum > > > > Playback channels: Front Left - Front Right > > > > Limits: Playback 0 - 255 > > > > Mono: > > > > Front Left: Playback 255 [100%] [191.00dB] [on] > > > > Front Right: Playback 255 [100%] [191.00dB] [on]