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Thread: Ubuntu 20.04: Dummy Output, No audio sound

  1. #1
    Join Date
    Apr 2021

    Ubuntu 20.04: Dummy Output, No audio sound

    /sbin/lsmod | grep snd
    snd_hda_codec_realtek   131072  1
    snd_hda_codec_generic    81920  1 snd_hda_codec_realtek
    ledtrig_audio          16384  1 snd_hda_codec_generic
    snd_hda_codec_hdmi     61440  2
    snd_hda_intel          53248  7
    snd_intel_dspcfg       24576  1 snd_hda_intel
    snd_hda_codec         139264  4 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_i  ntel,snd_hda_codec_realtek
    snd_hda_core           94208  5 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_i  ntel,snd_hda_codec,snd_hda_codec_realtek
    snd_hwdep              20480  1 snd_hda_codec
    snd_pcm               114688  4 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd  _hda_core
    snd_seq_midi           20480  0
    snd_seq_midi_event     16384  1 snd_seq_midi
    snd_rawmidi            36864  1 snd_seq_midi
    snd_seq                69632  2 snd_seq_midi,snd_seq_midi_event
    snd_seq_device         16384  3 snd_seq,snd_seq_midi,snd_rawmidi
    snd_timer              40960  2 snd_seq,snd_pcm
    snd                    94208  25  snd_hda_codec_generic,snd_seq,snd_seq_device,snd_h   da_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_code   c,snd_hda_codec_realtek,snd_timer,snd_pcm,snd_rawm  idi
    soundcore              16384  1 snd
    lspci -v
    Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS522A PCI Express Card Reader (rev 01)
        Subsystem: Hewlett-Packard Company RTS522A PCI Express Card Reader
        Physical Slot: 4
        Flags: bus master, fast devsel, latency 0, IRQ 129
        Memory at b4300000 (32-bit, non-prefetchable) [size=4K]
        Capabilities: <access denied>
        Kernel driver in use: rtsx_pci
        Kernel modules: rtsx_pci
    {IN GUI}
    no card detected
    {in GUI}
    Card: HDA Intel PCH                                                                                                                                         
    │ Chip: Realtek ALC295                                                                                                                                    
    │ View: F3:[Playback] F4: Capture  F5: All                                                                                                                  
    │ Item: Master [dB gain: 0.00]
    {IN GUI}
    3 options availabe Nvidia GPU 80 HDMI/UP,  Intel Kaylake HDMI, Realtek ALC 295

    Initially the speakers and earphones were working properly but the mic wasn't. However, I ruined everything in order to fix mic input.

  2. #2
    Join Date
    Jun 2007

    Re: Ubuntu 20.04: Dummy Output, No audio sound

    Quote Originally Posted by smakbar View Post
    I ruined everything in order to fix mic input.
    What exactly did you do? At least give links.

    Also, there's a beter way to get info:
    sudo alsa-info
    Upload the info and give us the link.

  3. #3
    Join Date
    Apr 2021

    Re: Ubuntu 20.04: Dummy Output, No audio sound

    Had the same issue, I just did:
    sudo killall timidity
    Then the sound came back.
    But after reboot, there is no sound again.
    Then I figured out the proper way of disabling timidity:
    sudo systemctl stop timidity.service
    sudo systemctl disable timidity.service

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