ALC255 no audio output from the laptop speakers on Acer Predator Helios 300

[dibyendu-deogharia]

Hi everyone,

I have Acer Predator Helios 300. I recently installed Lubuntu but to my surprise I had no sound. I searched for the solutions and tried each and every "[SOLVED]" issues. But stil I dont have any output from my laptop speakers. I have output from the headphone jack tho.
Most recently I installed "hdajackretask" and got the status of my sound card to "RUNNING" and in the settings menu, "Speakers(Unavailable)" changed to "Speakers"


The details are as follows -

pactl list sinks ; aplay -lSink #0
State: RUNNING
Name: alsa_output.pci-0000_00_1f.3.analog-stereo
Description: Built-in Audio Analog Stereo
Driver: module-alsa-card.c
Sample Specification: s16le 2ch 48000Hz
Channel Map: front-left,front-right
Owner Module: 8
Mute: no
Volume: front-left: 65536 / 100% / 0.00 dB, front-right: 65536 / 100% / 0.00 dB
balance 0.00
Base Volume: 65536 / 100% / 0.00 dB
Monitor Source: alsa_output.pci-0000_00_1f.3.analog-stereo.monitor
Latency: 39958 usec, configured 40000 usec
Flags: HARDWARE HW_MUTE_CTRL HW_VOLUME_CTRL DECIBEL_VOLUME LATENCY
Properties:
alsa.resolution_bits = "16"
device.api = "alsa"
device.class = "sound"
alsa.class = "generic"
alsa.subclass = "generic-mix"
alsa.name = "ALC255 Analog"
alsa.id = "ALC255 Analog"
alsa.subdevice = "0"
alsa.subdevice_name = "subdevice #0"
alsa.device = "0"
alsa.card = "0"
alsa.card_name = "HDA Intel PCH"
alsa.long_card_name = "HDA Intel PCH at 0xa439c000 irq 138"
alsa.driver_name = "snd_hda_intel"
device.bus_path = "pci-0000:00:1f.3"
sysfs.path = "/devices/pci0000:00/0000:00:1f.3/sound/card0"
device.bus = "pci"
device.vendor.id = "8086"
device.vendor.name = "Intel Corporation"
device.product.id = "a348"
device.product.name = "Cannon Lake PCH cAVS"
device.form_factor = "internal"
device.string = "front:0"
device.buffering.buffer_size = "352800"
device.buffering.fragment_size = "176400"
device.access_mode = "mmap+timer"
device.profile.name = "analog-stereo"
device.profile.description = "Analog Stereo"
device.description = "Built-in Audio Analog Stereo"
module-udev-detect.discovered = "1"
device.icon_name = "audio-card-pci"
Ports:
analog-output-speaker: Speakers (priority: 10000)
analog-output-headphones: Headphones (priority: 9900)
Active Port: analog-output-speaker
Formats:
pcm
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC255 Analog [ALC255 Analog]
Subdevices: 0/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 7: HDMI 1 [HDMI 1]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 8: HDMI 2 [HDMI 2]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 9: HDMI 3 [HDMI 3]
Subdevices: 1/1
Subdevice #0: subdevice #0

lspci | grep -i audio
00:1f.3 Audio device: Intel Corporation Cannon Lake PCH cAVS (rev 10)
01:00.1 Audio device: NVIDIA Corporation GP107GL High Definition Audio Controller (rev a1)

Please help me with the issue as I am stuck for past 1 week with a very little success. My knowledge of linux is limited but I would love to share any more details if required to make my issue more clear.

Thank you

[guiverc]

You've not provided any release details; if it's a LTS release; there will be two kernel stack choices available, the default stack is chosen by your installation media with Lubuntu. The relevance of this, is drivers are actually kernel modules; so using the other stack choice means different drivers will be used (and you can have both stacks installed! though only one can be used at a time; though use of some closed-source video drivers will prevent both kernel stacks from co-existing).

Did you try using `pavucontrol` ? as that's where I always start. In the manual, the page is here - https://manual.lubuntu.me/stable/2/2...e_control.html as it provides pretty easy control for most hardware on which output device/channel is being used.

Note: As I don't know your release, I've provided the link for the latest stablerelease which currently is Lubuntu 21.10. The URL can be adjusted if you're using a different release.