A thing noticeable about the diff of the working and broken internal
microphone is that the one that's not working shows the processes that
are accessing the sound card (pacmd list-clients) includes libcanberra.
> application.name = "libcanberra"
> native-protocol.peer = "UNIX socket client"
> native-protocol.version = "32"
> application.version = "0.30"
> application.id = "org.freedesktop.libcanberra"
> application.process.id = "1550"
> application.process.user = "linda"
> application.process.host = "gazelle"
> application.process.binary = "gsd-media-keys"
> application.language = "en_US.UTF-8"
> window.x11.display = ":0"
> application.process.machine_id =
> "df4e0d95e2e6bc9d6b63c5a35372e1c3"
> application.process.session_id = "1"
> index: 2
> driver: <protocol-native.c>
> owner module: 12
> properties:
The other thing I wondered about is that in the broken one, the IRQ pin
numbers reported by "cat /proc/asound/cards" and "lspci -vvv | grep -A9
Audio" are different.
cat /proc/asound/cards
0 [HDMI ]: HDA-Intel - HDA Intel HDMI
HDA Intel HDMI at 0xf7e14000 irq 34
1 [PCH ]: HDA-Intel - HDA Intel PCH
HDA Intel PCH at 0xf7e10000 irq 33
lspci -vvv | grep -A9 Audio
00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor
HD Audio Controller (rev 06)
Subsystem: CLEVO/KAPOK Computer Xeon E3-1200 v3/4th Gen Core Processor
HD Audio Controller
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 30
Region 0: Memory at f7e14000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
--
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High
Definition Audio Controller (rev 05)
Subsystem: CLEVO/KAPOK Computer 8 Series/C220 Series Chipset High
Definition Audio Controller
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx+
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort-
<MAbort- >SERR- <PERR- INTx-
Latency: 0, Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 34
Region 0: Memory at f7e10000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
I don't know if this has anything to do with why this internal mic stops
working. I wonder what is calling libcanberra.
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You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to alsa-driver in Ubuntu.
https://bugs.launchpad.net/bugs/1840725
Title:
Microphone not working in Ubuntu 18.04.3 LTS on new hp-
spectre-x360-convertible-15 laptop
Status in alsa-driver package in Ubuntu:
Confirmed
Bug description:
Internal Microphone does not work in Ubuntu 18.04.3 LTS in a new hp-
spectre-x360-convertible-15 laptop. The microphone works perfectly on
Windows 10 (present in Dual boot mode).
Initially, Internal Microphone was not even detected but installing
alsa-tools-gui and overriding pin 0x12 to the Internal Microphone
fixed that issue. [Pin 0x13 does not work and causes static in a
headphone if it is plugged in.]
Microphone is not able to pick up any sound. I changed levels/settings in
alsamixer, pavucontrol without any success:
In alsamixer: Experimented with levels ranging from very low to very high for
Internal Mic, Capture, etc.
In pavucontrol: Set the Internal Mic as a fallback device, unlocked the
channels for the mic, experimented with reducing the level for one of the
channels (reduced right mic level to Silence while keeping the left mic level
normal/high and vice versa).
alsa-info:
http://alsa-project.org/db/?f=cf6d3ccc6372f955da7d99df07afbcb31d5a6c7f
arecord -l
**** List of CAPTURE Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC285 Analog [ALC285 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
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