Ask Ubuntu Asked by Dipanshu Verma on November 19, 2021
I have been using ubuntu 20.04 recently and have a HP pavillion laptop with B&O speakers. However i am not able to hear any sound. though, Bluetooth is working fine.
I have tried many solutions such as :
*sudo apt purge timidity-daemon
*sudo alsa force-reload
*sudo apt install pavucontrol and running pavucontrol.
None of the solutions have worked for me yet.
EDIT:
Later I assumed it to be a kernel bug and say a solution using the following commands:
sudo add-apt-repository ppa:kaihengfeng/fix-lp1869819
sudo apt-get update
after that i have tried reinstalling pulseaudio. And now bluetooth devices just after getting connected are automatically disconnected, do not play any sound either.
EDIT2: I would like to present the following outputs
1.1. cat /proc/asound/cards
0 [NVidia ]: HDA-Intel - HDA NVidia
HDA NVidia at 0xb4000000 irq 17
1.2. lsmod | grep snd
snd_soc_hdac_hdmi 36864 0
snd_hda_codec_realtek 122880 0
snd_hda_codec_generic 81920 1 snd_hda_codec_realtek
snd_soc_dmic 16384 0
snd_sof_pci 20480 0
snd_sof_intel_hda_common 69632 1 snd_sof_pci
snd_soc_hdac_hda 24576 1 snd_sof_intel_hda_common
snd_sof_intel_hda 20480 1 snd_sof_intel_hda_common
snd_sof_intel_byt 20480 1 snd_sof_pci
snd_sof_intel_ipc 20480 1 snd_sof_intel_byt
snd_sof 106496 4 snd_sof_pci,snd_sof_intel_hda_common,snd_sof_intel_byt,snd_sof_intel_ipc
snd_sof_xtensa_dsp 16384 1 snd_sof_pci
snd_hda_ext_core 28672 4 snd_sof_intel_hda_common,snd_soc_hdac_hdmi,snd_soc_hdac_hda,snd_sof_intel_hda
snd_soc_acpi_intel_match 32768 2 snd_sof_pci,snd_sof_intel_hda_common
snd_soc_acpi 16384 2 snd_sof_pci,snd_soc_acpi_intel_match
ledtrig_audio 16384 3 snd_hda_codec_generic,snd_hda_codec_realtek,snd_sof
snd_soc_core 245760 5 snd_sof,snd_sof_intel_hda_common,snd_soc_hdac_hdmi,snd_soc_hdac_hda,snd_soc_dmic
snd_hda_codec_hdmi 61440 1
snd_compress 24576 1 snd_soc_core
ac97_bus 16384 1 snd_soc_core
snd_pcm_dmaengine 16384 1 snd_soc_core
snd_hda_intel 53248 3
snd_intel_dspcfg 24576 3 snd_hda_intel,snd_sof_pci,snd_sof_intel_hda_common
snd_hda_codec 131072 5 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek,snd_soc_hdac_hda
snd_hda_core 90112 10 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_ext_core,snd_hda_codec,snd_hda_codec_realtek,snd_sof_intel_hda_common,snd_soc_hdac_hdmi,snd_soc_hdac_hda,snd_sof_intel_hda
snd_hwdep 20480 1 snd_hda_codec
snd_pcm 106496 9 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_sof,snd_sof_intel_hda_common,snd_soc_hdac_hdmi,snd_soc_core,snd_hda_core,snd_pcm_dmaengine
snd_seq_midi 20480 0
snd_seq_midi_event 16384 1 snd_seq_midi
snd_rawmidi 36864 1 snd_seq_midi
snd_seq 69632 2 snd_seq_midi,snd_seq_midi_event
snd_seq_device 16384 3 snd_seq,snd_seq_midi,snd_rawmidi
snd_timer 36864 2 snd_seq,snd_pcm
snd 90112 19 snd_hda_codec_generic,snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek,snd_timer,snd_compress,snd_soc_core,snd_pcm,snd_rawmidi
soundcore 16384 1 snd
1.3. lsmod | grep snd_hda_intel
snd_hda_intel 53248 3
snd_intel_dspcfg 24576 3 snd_hda_intel,snd_sof_pci,snd_sof_intel_hda_common
snd_hda_codec 131072 5 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek,snd_soc_hdac_hda
snd_hda_core 90112 10 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_ext_core,snd_hda_codec,snd_hda_codec_realtek,snd_sof_intel_hda_common,snd_soc_hdac_hdmi,snd_soc_hdac_hda,snd_sof_intel_hda
snd_pcm 106496 9 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_sof,snd_sof_intel_hda_common,snd_soc_hdac_hdmi,snd_soc_core,snd_hda_core,snd_pcm_dmaengine
snd 90112 19 snd_hda_codec_generic,snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek,snd_timer,snd_compress,snd_soc_core,snd_pcm,snd_rawmidi
1.4. inxi -SA (you may have to install inxi)
System: Host: jarvis Kernel: 5.4.0-42-generic x86_64 bits: 64 Desktop: Gnome 3.36.3
Distro: Ubuntu 20.04.1 LTS (Focal Fossa)
Audio: Device-1: Intel Cannon Lake PCH cAVS driver: sof-audio-pci
Device-2: NVIDIA GP107GL High Definition Audio driver: snd_hda_intel
Sound Server: ALSA v: k5.4.0-42-generic
1.5. lspci -nnk | grep -n -A 4 Audio
47:00:1f.3 Audio device [0403]: Intel Corporation Cannon Lake PCH cAVS [8086:a348] (rev 10)
48- Subsystem: Hewlett-Packard Company Cannon Lake PCH cAVS [103c:8478]
49- Kernel driver in use: sof-audio-pci
50- Kernel modules: snd_hda_intel, snd_sof_pci
51-00:1f.4 SMBus [0c05]: Intel Corporation Cannon Lake PCH SMBus Controller [8086:a323] (rev 10)
--
62:01:00.1 Audio device [0403]: NVIDIA Corporation GP107GL High Definition Audio Controller [10de:0fb9] (rev a1)
63: Subsystem: Hewlett-Packard Company GP107GL High Definition Audio Controller [103c:8478]
64- Kernel driver in use: snd_hda_intel
65- Kernel modules: snd_hda_intel
66-02:00.0 Unassigned class [ff00]: Alcor Micro AU6625 PCI-E Flash card reader controller [1aea:6625]
67- Subsystem: Hewlett-Packard Company AU6625 PCI-E Flash card reader controller [103c:8478]
1.6. uname -a
Linux jarvis 5.4.0-42-generic #46-Ubuntu SMP Fri Jul 10 00:24:02 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
1.7. aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
1.8. sudo lshw -C multimedia (without sudo if you can’t)
*-multimedia
description: Audio device
product: GP107GL High Definition Audio Controller
vendor: NVIDIA Corporation
physical id: 0.1
bus info: pci@0000:01:00.1
version: a1
width: 32 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list
configuration: driver=snd_hda_intel latency=0
resources: irq:17 memory:b4000000-b4003fff
*-usb:1
description: Video
product: HP Wide Vision HD Camera
vendor: Chicony
physical id: 5
bus info: usb@1:5
version: 32.48
capabilities: usb-2.00
configuration: driver=uvcvideo maxpower=500mA speed=480Mbit/s
*-multimedia
description: Audio device
product: Cannon Lake PCH cAVS
vendor: Intel Corporation
physical id: 1f.3
bus info: pci@0000:00:1f.3
version: 10
width: 64 bits
clock: 33MHz
capabilities: pm msi bus_master cap_list
configuration: driver=sof-audio-pci latency=32
resources: irq:16 memory:b451c000-b451ffff memory:b4100000-b41fffff
1.9. dpkg -l | grep alsa
ii alsa-base 1.0.25+dfsg-0ubuntu5 all ALSA driver configuration files
ii alsa-topology-conf 1.2.2-1 all ALSA topology configuration files
ii alsa-ucm-conf 1.2.2-1ubuntu0.1 all ALSA Use Case Manager configuration files
ii alsa-utils 1.2.2-1ubuntu1 amd64 Utilities for configuring and using ALSA
ii gstreamer1.0-alsa:amd64 1.16.2-4 amd64 GStreamer plugin for ALSA
1.10. dpkg -l | grep linux- | grep $(uname -r)
ii linux-headers-5.4.0-42-generic 5.4.0-42.46 amd64 Linux kernel headers for version 5.4.0 on 64 bit x86 SMP
ii linux-image-5.4.0-42-generic 5.4.0-42.46 amd64 Signed kernel image generic
ii linux-modules-5.4.0-42-generic 5.4.0-42.46 amd64 Linux kernel extra modules for version 5.4.0 on 64 bit x86 SMP
ii linux-modules-extra-5.4.0-42-generic 5.4.0-42.46 amd64 Linux kernel extra modules for version 5.4.0 on 64 bit x86 SMP
ii linux-modules-nvidia-440-5.4.0-42-generic 5.4.0-42.46 amd64 Linux kernel nvidia modules for version 5.4.0-42
1.11. modprobe –show-depends snd_hda_intel
insmod /lib/modules/5.4.0-42-generic/kernel/sound/soundcore.ko
install /sbin/modprobe --ignore-install snd $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist snd-ioctl32 ; /sbin/modprobe --quiet --use-blacklist snd-seq ; }
insmod /lib/modules/5.4.0-42-generic/kernel/sound/core/snd-timer.ko
install /sbin/modprobe --ignore-install snd-pcm $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist snd-pcm-oss ; : ; }
insmod /lib/modules/5.4.0-42-generic/kernel/sound/core/snd-hwdep.ko
insmod /lib/modules/5.4.0-42-generic/kernel/sound/hda/snd-hda-core.ko
insmod /lib/modules/5.4.0-42-generic/kernel/sound/pci/hda/snd-hda-codec.ko
insmod /lib/modules/5.4.0-42-generic/kernel/sound/hda/snd-intel-dspcfg.ko
insmod /lib/modules/5.4.0-42-generic/kernel/sound/pci/hda/snd-hda-intel.ko
1.12. grep intel /etc/modprobe.d/alsa-base.conf
options snd-intel8x0m index=-2
Finally, after surfing a lot through the net and reading about options of alsa for NVIDIA aound controller I got the following solution
2 files are to be changed
/etc/modprobe.d/blacklist.conf and/etc/modprobe.d/alsa-base.confblacklist snd_soc_skloptions snd-hda-intel dmic_detect=0Reboot and Enjoy with the restored sound!
Answered by Dipanshu Verma on November 19, 2021
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 is possibly more of a comment, but it would not fit as such. So this is my five cents to try helping.
I have recently faced an issue with sound in 20.04, and it was painful to solve it. Only "Dummy output" (sound) in Ubuntu 20.04 after reboot - Broken driver / module At the bottom of the question I list just a few of the sources I read.
Based on that experience (see my own answer), I suggest you add the following info:
Output of
1.1. cat /proc/asound/cards
1.2. lsmod | grep snd
1.3. lsmod | grep snd_hda_intel
1.4. inxi -SA (you may have to install inxi)
1.5. lspci -nnk | grep -n -A 4 Audio
1.6. uname -a
1.7. aplay -l
1.8. sudo lshw -C multimedia (without sudo if you can't)
1.9. dpkg -l | grep alsa
1.10. dpkg -l | grep linux- | grep $(uname -r)
1.11. modprobe --show-depends snd_hda_intel
1.12. grep intel /etc/modprobe.d/alsa-base.conf
Detail on
2.1. Was sound working at any time? It seems it was, but I am not certain.
2.2. If you have a "similar" working system #2 available.
Point 2.2. was key for me. If you have that option, I suggest you use it.
If not, you might consider installing another Ubuntu 20.04. It took me (roughly) some 6 cumulative hours fixing the problem (perhaps more). And it might have taken me possibly 6 more without my #2. So installing another Ubuntu is a competitive attempt.
You can do that, for instance, by squeezing your current partitions and and adding another Ubuntu side-by-side.
You may possibly require not more than 30Gb. You may even use your old /home if it resides in its own partition (a recommended practice).
Note: I am not sure the fix you tried may have "tainted" your base system.
Answered by sancho.s ReinstateMonicaCellio on November 19, 2021
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