Hi, I recently discovered the softvol plugin, and used it to add a Master volume to my USB soundcard, which doesn't have one. I followed the tutorial from alsa.opensrc.org [1]. I'm quite happy with it, but I found a little issue that I'd like to share here. The trouble is that the softvol appears as both a playback/capture device, but it acts weird for capture. amixer -c 1 get Master Simple mixer control 'Master',0 Capabilities: volume Playback channels: Front Left - Front Right Capture channels: Front Left - Front Right Limits: 0 - 255 Front Left: 255 [100%] Front Right: 255 [100%] Now, if I look at it with alsamixer, both playback and capture are linked, moving one volume also moves the other. Therefore, the following commands: amixer -c 1 set Master playback 10%- -> lower the playback volume 10% amixer -c 1 set Master capture 10%- -> also lower the playback volume 10% amixer -c 1 set Master 10%- -> lower the playback volume 20%, since amixer apply the change on both capture and playback. Can it be a bug in my USB soundcard driver ? Or is it a known limitation of the softvol plugin ? Actually, I don't care about the capture part, I would be happy if the softvol could act on the playback only, and export the capabilities pvolume and pvolume-joined only. It would look more standard to the system (except that it lacks the pswitch capability, but that's another story), and wouldn't confuse amixer, or other applications. Do you think it's something that can be achieved by tweaking the .asoundrc file ? A dump of my config is available at [2] Thanks for your replies ! Arnaud -- [1] http://alsa.opensrc.org/How_to_use_softvol_to_control_the_master_volume [2] http://www.alsa-project.org/db/?f=21137f7fd224ecf274443729c9582c41bb8f9540 ------------------------------------------------------------------------------ "Accelerate Dev Cycles with Automated Cross-Browser Testing - For FREE Instantly run your Selenium tests across 300+ browser/OS combos. Get unparalleled scalability from the best Selenium testing platform available Simple to use. Nothing to install. Get started now for free." http://p.sf.net/sfu/SauceLabs _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
