Audio not working on Acer Chromebook CB3-131

szboardstretcher · 2016-09-16 21:22:52

I've gotten all other features of this chromebook to work, including the camera. The sound is a holdout though. I've looked and found nothing on this model. So here is some information about the chromebook, please let me know if you can think of anything to try.

First off, this is the latest version.

[root@ArchTerminal ~]# uname -a
Linux ArchTerminal 4.7.2-1-ARCH #1 SMP PREEMPT Sat Aug 20 23:21:20 CEST 2016 i686 GNU/Linux

- if i run 'alsamixer' i get a screen like this, which just lists 'spdif/0 and spdif/1' with no options available.
http://imgur.com/a/L6uEf

lsmod|grep snd gives me this:

[root@ArchTerminal ~]# lsmod|grep snd
snd_hda_codec_hdmi     40960  1
snd_intel_sst_acpi     16384  0
snd_intel_sst_core     57344  1 snd_intel_sst_acpi
snd_hda_intel          28672  0
snd_soc_sst_mfld_platform    61440  1 snd_intel_sst_core
snd_soc_sst_match      16384  1 snd_intel_sst_acpi
snd_soc_max98090       61440  0
snd_hda_codec          94208  2 snd_hda_codec_hdmi,snd_hda_intel
snd_soc_core          159744  2 snd_soc_sst_mfld_platform,snd_soc_max98090
snd_hda_core           53248  3 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel
snd_compress           20480  1 snd_soc_core
snd_hwdep              16384  1 snd_hda_codec
snd_pcm_dmaengine      16384  1 snd_soc_core
ac97_bus               16384  1 snd_soc_core
snd_pcm                81920  8 snd_soc_core,snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel,snd_soc_sst_mfld_platform,snd_soc_max98090,snd_pcm_dmaengine,snd_hda_core
snd_timer              28672  1 snd_pcm
snd                    57344  9 snd_soc_core,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_hda_codec,snd_hda_intel,snd_soc_sst_mfld_platform,snd_compress
soundcore              16384  1 snd

And more information about the intel devices (since the sound is intel based):

[root@ArchTerminal ~]# dmesg|grep -i intel
[    0.000000] Reserving Intel graphics stolen memory at 0x7c000000-0x7fffffff
[    0.055222] smpboot: CPU0: Intel(R) Celeron(R) CPU  N2840  @ 2.16GHz (family: 0x6, model: 0x37, stepping: 0x8)
[    0.055229] Performance Events: PEBS fmt2+, 8-deep LBR, Silvermont events, full-width counters, Intel PMU driver.
[    0.509905] intel_idle: MWAIT substates: 0x33000020
[    0.509908] intel_idle: v0.4.1 model 0x37
[    0.510087] intel_idle: lapic_timer_reliable_states 0xffffffff
[    0.890814] intel_pstate: Intel P-state driver initializing
[    5.150408] intel_sst_acpi 80860F28:00: No matching machine driver found
[    5.350116] Intel(R) Wireless WiFi driver for Linux
[    5.350121] Copyright(c) 2003- 2015 Intel Corporation
[    5.565733] iwlwifi 0000:01:00.0: Detected Intel(R) Dual Band Wireless AC 7260, REV=0x144
[    5.746552] intel_soc_dts_thermal: request_threaded_irq ret -22
[    5.751750] iTCO_wdt: Intel TCO WatchDog Timer Driver v1.11
[    5.794667] intel_rapl: Found RAPL domain package
[    5.794669] intel_rapl: Found RAPL domain core
[    5.823264] Bluetooth: hci0: read Intel version: 3707100180012d0d00
[    5.841849] Bluetooth: hci0: Intel Bluetooth firmware file: intel/ibt-hw-37.7.10-fw-1.80.1.2d.d.bseq
[    5.977587] Bluetooth: hci0: Intel Bluetooth firmware patch completed and activated
[    8.142601] fb: switching to inteldrmfb from EFI VGA
[    8.231214] snd_hda_intel 0000:00:1b.0: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
[    8.364570] fbcon: inteldrmfb (fb0) is primary device
[   10.344558] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
[   10.388184] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1b.0/sound/card0/input9
[   10.388301] input: HDA Intel PCH HDMI/DP,pcm=7 as /devices/pci0000:00/0000:00:1b.0/sound/card0/input10

Speaker test

[root@ArchTerminal ~]# speaker-test 

speaker-test 1.1.2

Playback device is default
Stream parameters are 48000Hz, S16_LE, 1 channels
Using 16 octaves of pink noise
ALSA lib pcm_dmix.c:1041:(snd_pcm_dmix_open) unable to open slave
Playback open error: -2,No such file or directory

Any ideas?

mich41 · 2016-09-17 07:13:58

This is dgtital HDMI output and it seems that you have some other analog soundcard there (this snd_soc_* stuff). See how to handle multiple soundcards in ALSA or whatever pulseaudio you might be using (try F6 in alsamixer, for example). Or just blacklist snd_hda_intel if you don't care about HDMI audio.

MiscDev · 2016-09-17 10:45:27

Take a look at the issues on the GalliumOS GitHub site. They also have patches against kernel 4.7.2 for BayTrail and Braswell to fix things like sound.

Last edited by MiscDev (2016-09-17 12:22:30)

szboardstretcher · 2016-09-17 21:26:21

Thanks for the info. I looked into the Baytrail thing - and it seems like a great place to start.

Arch Linux

#1 2016-09-16 21:22:52

Audio not working on Acer Chromebook CB3-131

#2 2016-09-17 07:13:58

Re: Audio not working on Acer Chromebook CB3-131

#3 2016-09-17 10:45:27

Re: Audio not working on Acer Chromebook CB3-131

#4 2016-09-17 21:26:21

Re: Audio not working on Acer Chromebook CB3-131

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