no sound after ubuntu upgrade to 16.04 My ALSA information is located at http://www.alsa-project.org/db/?f=c2159b1567c305b77cd51d395d33dad429926dae
uname -r
4.4.0-112-generic
aplay -l
aplay: device_list:268: no soundcards found...
modprobe snd_hda_intel
modprobe: FATAL: Module snd_hda_intel not found in directory /lib/modules/4.4.0-112-generic
After your upgrade to 16.04 assure you issue
sudo apt-get update && sudo apt-get dist-upgrade
to pickup any driver updates ... Now to try to repair your existing OS issue this
rm -r ~/.config/pulse; pulseaudio -k
When you issue the following command
find /lib/modules/$(uname -r) | grep snd
above output should contain over 250 files looking like this
/lib/modules/4.4.0-122-generic/kernel/sound/drivers/snd-virmidi.ko
/lib/modules/4.4.0-122-generic/kernel/sound/drivers/snd-portman2x4.ko
/lib/modules/4.4.0-122-generic/kernel/sound/drivers/snd-serial-u16550.ko
/lib/modules/4.4.0-122-generic/kernel/sound/drivers/snd-mts64.ko
/lib/modules/4.4.0-122-generic/kernel/sound/drivers/opl3/snd-opl3-lib.ko
/lib/modules/4.4.0-122-generic/kernel/sound/drivers/opl3/snd-opl3-synth.ko
/lib/modules/4.4.0-122-generic/kernel/sound/drivers/pcsp/snd-pcsp.ko
/lib/modules/4.4.0-122-generic/kernel/sound/drivers/vx/snd-vx-lib.ko
/lib/modules/4.4.0-122-generic/kernel/sound/drivers/mpu401/snd-mpu401-uart.ko
if not then issue following to seed up your sound drivers
# sudo apt-get install linux-restricted-modules-$(uname -r) linux-generic
sudo apt-get install linux-generic
sudo apt-get install --reinstall libasound2 linux-sound-base alsa-utils alsa-tools
if output of above looks smacked then issue this to help get the packages aligned
sudo apt-get -f install
you may need to reboot here ... before you reboot issue below to see if your audio is recognized now
lspci -v | grep -A7 -i "audio"
you should see something like this
00:14.2 Audio device: Advanced Micro Devices, Inc. [AMD] FCH Azalia Controller (rev 01)
Subsystem: Hewlett-Packard Company FCH Azalia Controller
Flags: bus master, slow devsel, latency 64, IRQ 16
Memory at feb40000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
If not then reboot to pickup above drivers ... now audio ? If its fixed please tell us if you needed to reboot or not ?
if not then update your question with your output ... see if your sound card is getting linked to your OS by issuing
cat /proc/asound/cards
you should see something like this
0 [Generic ]: HDA-Intel - HD-Audio Generic
HD-Audio Generic at 0xfeb40000 irq 16
1 [D1 ]: USB-Audio - Audioengine D1
2010 REV 1.7 Audioengine D1 at usb-0000:00:12.0-3, full speed
if not update your question with your output ... If still no go then jump into doing this https://wiki.ubuntu.com/PulseAudio/Log
If you are on a laptop/desktop I would boot the machine using a liveCD of ubuntu 16.04 from either a USB stick or DVD ... download the ISO file then burn on to USB stick using unetbootin ... once booted from that known solid OS does sound now work ? If not then its your hardware. If good sound then your above OS is shaky and you may consider to wipe the box with a fresh ubuntu 16.04 instead of the always suspect upgrade from existing prior OS
Are you on something other than laptop/desktop like a System-on-a-Card machine ?
EDIT: Avoid missing kernel linux-modules-extra-XX-generic when updating kernel may help avoiding the problem in the future, in some cases.
This answer pertains to Ubuntu 20.04. It solved my problem Only "Dummy output" (sound) in Ubuntu 20.04 after reboot - Broken driver / module (I have posted an answer for my own question). I am simply posting it here just in case it helps anyone reaching this from today onward... it would have helped me having it here.
Drivers snd_hda_intel and related are now in loadable modules from package linux-modules-extra-$(uname -r).
I infer from the accepted answer that at its time the corresponding package was linux-restricted-modules-$(uname -r).
Otherwise, they may be compiled in the kernel.
