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Thread: No sound after upgrading from 18.04 LTS to 20.04 LTS

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    Join Date
    May 2020
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    No sound after upgrading from 18.04 LTS to 20.04 LTS

    I didn’t wait for the stable version of Ubuntu 20.04 LTS and upgraded my 18.04 LTS version using this command
    Code:
    update-manager -c -d
    
    I was aware I was doing an upgrade to developer version, anyway I decided to upgrade my OS.
    The upgrade had ended, I didn’t notice any crucial things during the process.
    The new system has one failure, there is no sound after booting, the only option for sound setting is a “dummy output”.
    A temporary solution for this exists, I just need to execute this command: (I’ve found it in https://bugs.launchpad.net/ubuntu/+s...61/comments/58)
    Code:
    pulseaudio -k && sudo alsa force-reload
    
    After executing this command the sound is working for a whole session.
    My question is:
    Is there any stable solution for my problem or should I wait for the stable version of 20.04 which supposedly will be released in July this year?

    (5.4.0-29-generic, x86_64, Dell n5040)
    Code:
        ... :~$ lspci -vvv | grep -A8 Audio
    00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 05)
        Subsystem: Dell 5 Series/3400 Series Chipset High Definition Audio
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 31
        Region 0: Memory at fbf00000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>
        Kernel driver in use: snd_hda_intel
        Kernel modules: snd_hda_intel
    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

    While executing the command:
    Code:
    pulseaudio -k && sudo alsa force-reload
    
    I noticed that one process that was to be restarted was blocked by
    Code:
    timidity
    .
    Then I decided to uninstall
    Code:
    timidity
    and
    Code:
    timidity-daemon
    .
    Sound in speakers of my laptop appeared immediately after uninstalling the two apps.
    Sound works also after a reboot.
    However speaker testing doesn't work for me.
    Last edited by sla-sz; May 30th, 2020 at 11:15 AM.

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