On Sunday 21 October 2012 06:50:34 Takashi Iwai did opine: > At Sun, 21 Oct 2012 17:51:00 +0800, > > Raymond Yau wrote: > > [1 <text/plain; UTF-8 (quoted-printable)>] > > 2012-10-21 ??????4:42 ??? "Takashi Iwai" <tiwai at suse.de> ????????? > > > > > 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. > > > Takashi > > > http://www.alsa-project.org/db/?f=44b26f5cd37f33bfef2871ff1fd250301bdb > > 5364 > > > > > > 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] > > > > > > > > Simple mixer control 'Headphone',0 > > > > > > > > Capabilities: pvolume pswitch penum > > > > Playback channels: Front Left - Front Right > > > > Limits: Playback 0 - 64 > > > > Mono: > > > > Front Left: Playback 64 [100%] [0.00dB] [on] > > > > Front Right: Playback 64 [100%] [0.00dB] [on] > > > > > > > > Simple mixer control 'PCM',0 > > > > > > > > Capabilities: pvolume penum > > > > Playback channels: Front Left - Front Right > > > > Limits: Playback 0 - 255 > > > > Mono: > > > > Front Left: Playback 255 [100%] [0.00dB] > > > > Front Right: Playback 255 [100%] [0.00dB] > > > > > > > > https://launchpadlibrarian.net/119782219/Symptom_PulseAudioLog.txt > > > > > > Oct 15 10:49:11 xaser pulseaudio[1601]: [pulseaudio] alsa-util.c: > > Unable to > > > > > > load mixer: Invalid argument > > > > [2 <text/html; UTF-8 (quoted-printable)>] I might also say that this 191db is a figure pulled out of thin air by some programmer who doesn't understand sound power. Even stated as a range, with no established reference level, 191 db would be from totally inaudible to about a 20 on the richter scale. IOW, well above the unclipped output of an Altec M-21 microphone setting 6" off the bore centerline and 6" from the end of a cannon. Cheers, Gene -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) My web page: <http://coyoteden.dyndns-free.com:85/gene> is up! Cabbage, n.: A familiar kitchen-garden vegetable about as large and wise as a man's head. -- Ambrose Bierce, "The Devil's Dictionary"
