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saalty

Member

Registered: 2012-04-06

Posts: 88

Problem with alsaequal and external USB soundcard

Hi all!

Since my laptop is pretty old (13 years old) the headphone jack output is a bit damaged, therefore I want to use external USB soundcard. It works fine but when I use alsaequal then the changes has no offect on the sound. Usually, my headphone is always connected to external USB device, and I want to have that is default. For now it is, but when I change something in /etc/asound.conf or I delete my .asounrc file, after the restart my laptops speakers are works again instead the headphobe through USB soundcard. I tried to setup files as I read on wiki pages, but I'm pretty sure that the problema are in my files. If I restore files like bellow, after restart my headphone works again but as I mentioned no equaluser has any effect on sound. Here are my files:

My /etc/modprobe.d/alsa-base.conf

# options snd slots=snd_usb_audio
options snd_usb_audio index=-1
options snd_hda_intel index=-2,-2

My /etc/asound.conf

pcm.!default {
    type plug
    slave.pcm "softvol"
}

pcm.softvol {
    type softvol
    slave {
        pcm "dmix"
    }

    control {
        name "Pre-Amp"
        card 0
    }
    min_dB -5.0
    max_dB 20.0
    resolution 6
}

ctl.equal {
    type equal;
}

pcm.plugequal {
    type equal;
    # Normally, the equalizer feeds into dmix so that audio
    # from multiple applications can be played simultaneously:
    slave.pcm "plug:dmix";
    # If you want to feed directly into a device, specify it instead of dmix:
    #slave.pcm "plughw:0,0";
}

# Configuring pcm.!default will make the equalizer your default sink
pcm.!default {
# If you do not want the equalizer to be your default,
# give it a different name, like pcm.equal commented below
# Then you can choose it as the output device by addressing
# it in individual apps, for example mpg123 -a equal 06.Back_In_Black.mp3
# pcm.equal {
    type plug;
    slave.pcm plugequal;
}

My .asoundrc

pcm.!default {
    type plug
    slave.pcm "asymed"
}


pcm.asymed {
    type asym
    playback.pcm {
        @func getenv
        vars [ ALSAPCM ]
        default "dmix"
    }
    capture.pcm "dsnoop"
}

Finally my output for aplay -lL

$ aplay -lL
null
    Discard all samples (playback) or generate zero samples (capture)
sysdefault
    Default Audio Device
sysdefault:CARD=Device
    USB Audio Device, USB Audio
    Default Audio Device
front:CARD=Device,DEV=0
    USB Audio Device, USB Audio
    Front output / input
surround21:CARD=Device,DEV=0
    USB Audio Device, USB Audio
    2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=Device,DEV=0
    USB Audio Device, USB Audio
    4.0 Surround output to Front and Rear speakers
surround41:CARD=Device,DEV=0
    USB Audio Device, USB Audio
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=Device,DEV=0
    USB Audio Device, USB Audio
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=Device,DEV=0
    USB Audio Device, USB Audio
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=Device,DEV=0
    USB Audio Device, USB Audio
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=Device,DEV=0
    USB Audio Device, USB Audio
    IEC958 (S/PDIF) Digital Audio Output
sysdefault:CARD=MID
    HDA Intel MID, ALC269VB Analog
    Default Audio Device
front:CARD=MID,DEV=0
    HDA Intel MID, ALC269VB Analog
    Front output / input
surround21:CARD=MID,DEV=0
    HDA Intel MID, ALC269VB Analog
    2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=MID,DEV=0
    HDA Intel MID, ALC269VB Analog
    4.0 Surround output to Front and Rear speakers
surround41:CARD=MID,DEV=0
    HDA Intel MID, ALC269VB Analog
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=MID,DEV=0
    HDA Intel MID, ALC269VB Analog
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=MID,DEV=0
    HDA Intel MID, ALC269VB Analog
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=MID,DEV=0
    HDA Intel MID, ALC269VB Analog
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
**** List of PLAYBACK Hardware Devices ****
card 0: Device [USB Audio Device], device 0: USB Audio [USB Audio]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: MID [HDA Intel MID], device 0: ALC269VB Analog [ALC269VB Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

Any idea?