Linked Questions

3 votes
2 answers
2k views

Output device is dummy output [duplicate]

My sound used to work as expected but after some small update all I find now is "Dummy output" as my output device. Below is the output of lspci -v | grep -A7 -i "audio" 00:1f.3 Multimedia audio ...
Kappalite's user avatar
0 votes
1 answer
2k views

Sound stopped working on Dell laptop Ubuntu 18.04 [duplicate]

For a few days now, I can get no sound out of my Dell laptop on Ubuntu 18.04.4. The 'Sounds' settings only shop the option 'Dummy output'. I have checked with headsets, it is the same. I have a ...
user avatar
0 votes
0 answers
104 views

Sound disappeared in Ubuntu 19.10, previous solutions not working [duplicate]

I tried to play sound today, and no sound. Similar questions and my failed attempts: No Sound (Dummy Output) error Ubuntu 19.10 but no solution here pulseaudio -k && sudo alsa force-reload ...
con's user avatar
  • 318
250 votes
3 answers
692k views

How do I add a kernel boot parameter?

I need to add the boot parameter foo=bar to my kernel. How can I do this once for testing, and permanently if testing was a success?
htorque's user avatar
  • 65k
25 votes
2 answers
90k views

How to downgrade kernel after bad update (16.04)

Recent upgrades to the Ubuntu 16.04 kernel (4.4.0-89 and -91) failed badly on my laptop. Happily, I've got the previous, working version still installed (4.4.0-57). For now I've got Grub configured ...
Alan De Smet's user avatar
6 votes
4 answers
6k views

Ubuntu 19.10 Audio driver issue

I am experiencing some sound issues with my fresh install of ubuntu 19.10 on my Dell Inpsiron 7590. It has an ALC3254 sound chip. The weird thing is, when running ubuntu from the install USB, the ...
Martijn van Essen's user avatar
2 votes
2 answers
6k views

Ubuntu 18.04 - Lenovo Thinkpad Carbon sound card not recognized since firmware update

I recently updated firmware on my Thinkpad Carbon X1 (last gen, 7th I guess) and since (I'm not sure it is the cause of my problem, but it happens simultaneously), I only have a "dummy device" in ...
Watchoutman's user avatar
2 votes
1 answer
6k views

Pulseaudio not working kernel driver broken

Since I plugged in a broken HDD drive, my pulseaudio won't work. At startup ubuntu stayed checking whether it worked and it took a long time to boot (several start jobs were started). If I try to ...
spykyvenator's user avatar
2 votes
3 answers
1k views

Ubuntu 19.10 no sound

I have HP laptop. The sound disappeared after an update. I have tried solution1, solution2, solution3 , solution4. Nothing works. Moreover, I cannot open alsamixer "cannot open mixer: No such file or ...
koppuli kappilka's user avatar
6 votes
1 answer
2k views

No more sound in Ubuntu 18.04 HP Envy

this is the first time I am posting here but I am kind of desperate. I don't have any more sound on my laptop, only "Dummy output" whereas it was working fine yesterday. I tried several methods, ...
Wob's user avatar
  • 61
2 votes
1 answer
3k views

No sound (dummy output) Ubuntu 19.10

I just installed Ubuntu 19.10 and I have no sound at all. I know my hardware is working because I heard system sounds when I was booting from a USB to install Ubuntu. When I go to system sound ...
Harry Kane's user avatar
1 vote
1 answer
1k views

Sound devices not detected in Ubuntu 18.04 on ASUS TUF FX 505

Sound devices are not listed in settings/sound panel, hence not speakers, jack, nor microphone work. I have tried reinstalling ALSA with no luck.
P. Navarro's user avatar
2 votes
1 answer
683 views

No sound on Ubuntu 18.04. Dummy output

I just installed Ubuntu 18.04 and it appears that the sound drivers I have do not work properly (I think). So when I open the sound settings window, I can see only "Dummy output" for output devices. ...
dephinera's user avatar
  • 441
0 votes
1 answer
626 views

Dummy audio output after upgrade (18.04.4, HDA Intel PCH)

After the most recent upgrade to kernel 4.15.0-91, I lost my sound. The built-in HDA Intel PCH is recognized by the kernel (as seen in the kernel log), but not shown in Settings/Sound (only Dummy ...
DYZ's user avatar
  • 133
1 vote
0 answers
908 views

Sound disappeared

I tried to play sound today, and no sound. Similar questions and my failed attempts: No Sound (Dummy Output) error Ubuntu 19.10 but no solution here pulseaudio -k && sudo alsa force-reload ...
con's user avatar
  • 318

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