36

I recently upgraded to Ubuntu 20.04 lts from 18.04 lts. After reboot audio is not working. I tried to reinstall pulseaudio and alsa but still not working. sudo apt-get install --reinstall alsa-base pulseaudio sudo alsa force-reload still not working.

output

 └─▶ inxi -SMA
System:    Host: Wizard Kernel: 5.4.0-26-generic x86_64 bits: 64 Desktop: Gnome 3.36.1 Distro: Ubuntu 20.04 LTS (Focal Fossa) 
Machine:   Type: Portable System: Dell product: Vostro 2520 v: N/A serial: <superuser/root required> 
           Mobo: Dell model: 0V1NDP v: A11 serial: <superuser/root required> BIOS: Dell v: A11 date: 02/24/2014 
Audio:     Device-1: Intel 7 Series/C216 Family High Definition Audio driver: snd_hda_intel 
           Sound Server: ALSA v: k5.4.0-26-generic

output

└─▶ lspci 
00:00.0 Host bridge: Intel Corporation 3rd Gen Core processor DRAM Controller (rev 09)
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
00:16.0 Communication controller: Intel Corporation 7 Series/C216 Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 7 Series/C216 Chipset Family USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 7 Series/C216 Chipset Family High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 7 Series/C216 Chipset Family PCI Express Root Port 1 (rev c4)
00:1c.3 PCI bridge: Intel Corporation 7 Series/C216 Chipset Family PCI Express Root Port 4 (rev c4)
00:1c.5 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 6 (rev c4)
00:1d.0 USB controller: Intel Corporation 7 Series/C216 Chipset Family USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation HM75 Express Chipset LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 7 Series Chipset Family 6-port SATA Controller [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 7 Series/C216 Chipset Family SMBus Controller (rev 04)
07:00.0 Network controller: Broadcom Inc. and subsidiaries BCM43142 802.11b/g/n (rev 01)
09:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 07)
Lorenz Keel
  • 9,511
Injamul Mohammad Mollah
  • 497

7 Answers7

19

Your speakers may be detected as unplugged which causes them to be ignored.

Temporary fix:

  1. sudo apt install pavucontrol
  2. Run pavucontrol
  3. Configuration tab > Profile > Analogue Stereo Output (unplugged) (unavailable)

Speakers should work but it will reset when headphones are unplugged or system rebooted.

Permanent fix:

  1. sudo apt install alsa-tools-gui
  2. Run hdajackretask
  3. Parser hints > jack_detect = no
  4. Apply now
  5. Install boot override
BlueDune
  • 191
19

Just in case somebody reached this question looking for a solution. The only native solution (no need to do something external) is provided by @Nate on this link https://askubuntu.com/a/37609/9598 which I reproduce partially here to give you a clue on how to fix this problem.

I [...] noticed that the ACLs weren't set in /dev/snd

sudo setfacl -m u:$USER:rw /dev/snd/*

and then do a reboot of your computer.

Running this command in a terminal will fix the issue.

Thank you very much Michael Butler

luca76
  • 215
Geppettvs D'Constanzo
  • 19,772
12

I think i have a workaround for your problem: Try 

sudo alsa force-reload

This brought my soundcard back to life. But it doesn't survive a reboot, so I am working on making the change persistent... See:

https://www.maketecheasier.com/fix-no-sound-issue-ubuntu/

user634093
  • 553
10

What fixed it for me after an upgrade to 20.04 was:

sudo apt purge timidity-daemon

Then reboot.
Quick and easy so worth trying!

Dominic
  • 165
5

Mine is a Dell Inspiron 1525. I tried all the solutions listed here on askubuntu.com and all over the web but of no use and finally to find that it is a bug in Ubuntu 20.04 LTS/kernel-5.4 (Focal kernel) where the internal sound card is not detected. The driver soc-skl is disabled by default from kernel-5.4. Kernels 5.5, 5.6 all disabled this driver. Read the bug reports here and here.

It affects many users. There is nothing much we can do until the kernels are fixed.

For me, the headphones and mic are working. For the time being, connecting the headphone jacks to external speakers solves the problem.

Rajasekharan N.
  • 171
3

I had this problem and tried everything else. For me the problem was built-in front audio in a desktop: it stopped working after a reboot. Running aplay -l said it saw no cards, but lspci -v reported an Intel Corporation C610/X99 series chipset HD Audio Controller. Its output didn't include any lines for Kernel modules. Googling told me that other people were using snd_hda_intel as the driver, but lsmod | grep snd gave no results. I didn't even have a /proc/asound directory; it was just missing.

It turns out I needed to run this to install the missing driver:

sudo apt-get install linux-modules-extra-`uname -r`

I actually did have the drivers installed for a previous kernel (visible if I said find /lib/modules -name 'snd-hda*'), but for some reason I didn't have the -extra package installed for my current kernel.

Hopefully this helps someone!

Paul A Jungwirth
  • 698
2

I tried all the solutions listed here on askubuntu.com and all over the web but of no use and finally to find that it is a bug in Ubuntu 20.04 LTS/kernel-5.4 (Focal kernel) where the internal sound card is not detected.

@Greg gave me The patch which is working for me

sudo add-apt-repository ppa:kaihengfeng/fix-lp1869819 sudo apt-get upgrade

Now Sound is working fine.

https://answers.launchpad.net/ubuntu/+source/alsa-driver/+question/690180

https://launchpad.net/~kaihengfeng/+archive/ubuntu/fix-lp1869819

Injamul Mohammad Mollah
  • 497