From mboxrd@z Thu Jan 1 00:00:00 1970 From: Takashi Iwai Subject: Re: Mixer problem with VT8233/A/8235/8237 AC97 Audio Controller (rev 60) Date: Tue, 25 Jan 2005 11:24:30 +0100 Message-ID: References: <41F1CE80.1080302@trimaxcba.com> <41F58E5D.4000409@trimaxcba.com> Mime-Version: 1.0 (generated by SEMI 1.14.5 - "Awara-Onsen") Content-Type: text/plain; charset=US-ASCII Return-path: In-Reply-To: <41F58E5D.4000409@trimaxcba.com> Sender: alsa-devel-admin@lists.sourceforge.net Errors-To: alsa-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: Horacio de Oro Cc: alsa-devel@lists.sourceforge.net List-Id: alsa-devel@alsa-project.org At Mon, 24 Jan 2005 21:10:05 -0300, Horacio de Oro wrote: > > Takashi Iwai wrote: > > At Sat, 22 Jan 2005 00:54:40 -0300, > > Horacio de Oro wrote: > > > >>I've a problem with the mixer of my sound card. It never has worked fine. > >> > >>I run 'aumix', the /dev/mixer is opened fine: > >> > >>horacio@corralito-ng:~$ lsof /dev/mixer > >>COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME > >>mixer_app 859 horacio 34u CHR 14,0 5239 /dev/mixer0 > >>aumix 1869 horacio 3u CHR 14,0 5239 /dev/mixer0 > >> > >>I can change any volume control (for example: "CD"). While I move the > >>control, I can hear the volume goes UP and DOWN, but I can't change the > >>"main" volume, and I can't change the "PCM" volume (this control are on > >>"top"). > > > > > > They are not supporbed by your hardware. > > CMI9739 AC97 codec doesn't have Master and PCM volumes. > > Only PCM switch works. > > > > > > Takashi > > > > Hi Takashi! Thanks for your response! > > Using "Gnome Volume Control" v2.8.0 (or earlier), the "PCM" works like a > "binary variable", so: > 1) if the PCM volume is between 1% to 100%, then the volume you hear > is at maximum (the same volume is at 1% and to 100%). > 2) if you put PCM volume at 0%, the PCM volume go off, and you can't > hear more mp3, wav, etc. > > So: > PCM = 0% -> PCM volume off > PCM = 1% to 100% -> PCM volume at maximum > > This way, the only way to put the volume a little down, is using the > speakers. I guess you're using kernel OSS emulation. The volume attenuation is done in software via alsa-lib's softvol plugin. So, it can't work with the kernel OSS emulation. Use either ALSA native or aoss wrapper. Takashi ------------------------------------------------------- This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting Tool for open source databases. Create drag-&-drop reports. Save time by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc. Download a FREE copy at http://www.intelliview.com/go/osdn_nl