Dummy Output after upgrade to 16.10

Question

I've upgraded from Ubuntu 16.04 to Ubuntu 16.10 and after that the soundcard stopped working. It doesn't show the as before but only showing Dummy Output.

Output from lspci show the following:

0:00.0 Host bridge: Intel Corporation Skylake Host Bridge/DRAM Registers (rev 07)
00:02.0 VGA compatible controller: Intel Corporation HD Graphics 530 (rev 06)
00:14.0 USB controller: Intel Corporation Sunrise Point-H USB 3.0 xHCI Controller (rev 31)
00:16.0 Communication controller: Intel Corporation Sunrise Point-H CSME HECI #1 (rev 31)
00:17.0 SATA controller: Intel Corporation Sunrise Point-H SATA controller [AHCI mode] (rev 31)
00:1b.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Root Port #17 (rev f1)
00:1c.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #1 (rev f1)
00:1d.0 PCI bridge: Intel Corporation Sunrise Point-H PCI Express Root Port #9 (rev f1)
00:1f.0 ISA bridge: Intel Corporation Sunrise Point-H LPC Controller (rev 31)
00:1f.2 Memory controller: Intel Corporation Sunrise Point-H PMC (rev 31)
00:1f.3 Audio device: Intel Corporation Sunrise Point-H HD Audio (rev 31)
00:1f.4 SMBus: Intel Corporation Sunrise Point-H SMBus (rev 31)
00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (2) I219-V (rev 31)
02:00.0 USB controller: ASMedia Technology Inc. ASM1142 USB 3.1 Host Controller

aplay shows the following:

aplay -l
**** List of PLAYBACK Hardware Devices ****

My motherboard is a Asus Z170 pro-gaming.
Already added options snd-hda-intel model=auto to the alsa.conf without any success.

Update 16.10.2016

Also tried

sudo apt-get remove --purge alsa-base pulseaudio
sudo apt install alsa-base* indicator-sound* libcanberra-pulse* osspd* osspd-pulseaudio* pulseaudio* pulseaudio-module-bluetooth* pulseaudio-module-x11* unity-control-center* unity-control-center-signon*

This made the icons get back, but still only "dummy output"

see this post http://askubuntu.com/questions/426648/how-to-reinstall-pulseaudio-ubuntu-12-04#435221 — Mudit Kapil, Oct 15 '16 at 16:13
Now the system notification icon is gone. But it still shows the dummy output. So sadly did not help anything. — zz5zz, Oct 15 '16 at 19:21
Just today under 16.04 a Dummy Output device showed up and rebooting got rid of it. — WinEunuuchs2Unix, Oct 16 '16 at 21:11
I also have this problem. Once a sudo alsa force-reload fixed it, but other times I have to reboot. What the heck? Dell xps laptop here. — partofthething, Mar 18 '17 at 03:08

score 2 · Answer 1 · edited Jun 21 '17 at 11:02

I used to face similar problem and needed to run sudo alsa force-reload every time I start my computer. Then identified the processes that ALSA stops to reload it from the PIDs shown in the output.

Used sudo pstree -p prior to reloading ALSA so that I can find out the process names corresponding to the PIDs. Started uninstalling the packages related to those possibly problematic processes.

Finally found uninstalling squeezelite-pa solved my problem.

Dummy Output after upgrade to 16.10

Update 16.10.2016

1 Answers1