Public bug reported:
Since upgrade to 4.10.0-35-generic in Ubuntu 17.04, the sound card is
detected, but pavucontrol has only "Dummy Output". Bar animation shows
audio is playing, but no sound is heard. alsamixer is working fine, but
audio still can't be heard. Configuration tab says "No cards available
for configuration".
$ lspci -v
0:1f.3 Audio device: Intel Corporation Device 9d71 (rev 21)
Subsystem: Dell Device 0781
Flags: bus master, fast devsel, latency 32, IRQ 283
Memory at d5328000 (64-bit, non-prefetchable) [size=16K]
Memory at d5300000 (64-bit, non-prefetchable) [size=64K]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel, snd_soc_skl
# aplay -L
default
Playback/recording through the PulseAudio sound server
null
Discard all samples (playback) or generate zero samples (capture)
pulse
PulseAudio Sound Server
sysdefault:CARD=PCH
HDA Intel PCH, ALC3246 Analog
Default Audio Device
front:CARD=PCH,DEV=0
HDA Intel PCH, ALC3246 Analog
Front speakers
surround21:CARD=PCH,DEV=0
HDA Intel PCH, ALC3246 Analog
2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=PCH,DEV=0
HDA Intel PCH, ALC3246 Analog
4.0 Surround output to Front and Rear speakers
surround41:CARD=PCH,DEV=0
HDA Intel PCH, ALC3246 Analog
4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=PCH,DEV=0
HDA Intel PCH, ALC3246 Analog
5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=PCH,DEV=0
HDA Intel PCH, ALC3246 Analog
5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=PCH,DEV=0
HDA Intel PCH, ALC3246 Analog
7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
hdmi:CARD=PCH,DEV=0
HDA Intel PCH, HDMI 0
HDMI Audio Output
hdmi:CARD=PCH,DEV=1
HDA Intel PCH, HDMI 1
HDMI Audio Output
hdmi:CARD=PCH,DEV=2
HDA Intel PCH, HDMI 2
HDMI Audio Output
dmix:CARD=PCH,DEV=0
HDA Intel PCH, ALC3246 Analog
Direct sample mixing device
dmix:CARD=PCH,DEV=3
HDA Intel PCH, HDMI 0
Direct sample mixing device
dmix:CARD=PCH,DEV=7
HDA Intel PCH, HDMI 1
Direct sample mixing device
dmix:CARD=PCH,DEV=8
HDA Intel PCH, HDMI 2
Direct sample mixing device
dsnoop:CARD=PCH,DEV=0
HDA Intel PCH, ALC3246 Analog
Direct sample snooping device
dsnoop:CARD=PCH,DEV=3
HDA Intel PCH, HDMI 0
Direct sample snooping device
dsnoop:CARD=PCH,DEV=7
HDA Intel PCH, HDMI 1
Direct sample snooping device
dsnoop:CARD=PCH,DEV=8
HDA Intel PCH, HDMI 2
Direct sample snooping device
hw:CARD=PCH,DEV=0
HDA Intel PCH, ALC3246 Analog
Direct hardware device without any conversions
hw:CARD=PCH,DEV=3
HDA Intel PCH, HDMI 0
Direct hardware device without any conversions
hw:CARD=PCH,DEV=7
HDA Intel PCH, HDMI 1
Direct hardware device without any conversions
hw:CARD=PCH,DEV=8
HDA Intel PCH, HDMI 2
Direct hardware device without any conversions
plughw:CARD=PCH,DEV=0
HDA Intel PCH, ALC3246 Analog
Hardware device with all software conversions
plughw:CARD=PCH,DEV=3
HDA Intel PCH, HDMI 0
Hardware device with all software conversions
plughw:CARD=PCH,DEV=7
HDA Intel PCH, HDMI 1
Hardware device with all software conversions
plughw:CARD=PCH,DEV=8
HDA Intel PCH, HDMI 2
Hardware device with all software conversions
** Affects: pulseaudio (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1717992
Title:
Sound silently plays to "Dummy Output"
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