Tenho o Ubuntu 16.04.3 em execução no meu laptop Dell Inspiron i5559. O som funciona normalmente por alguns dias e depois pára. De início, não há indicação de que algo esteja errado, além do fato de que o som não funciona mais. Depois de um minuto eu posso ver nas configurações de som que nenhum dispositivo de áudio é detectado. Ele listará apenas "Saída falsa" como meu dispositivo de áudio. Se eu olhar para o meu hardware a partir do BIOS, ele lista o controlador de áudio como "(nenhum)". Eu tentei todos os tipos de correções, algumas das quais pareciam funcionar por um dia ou mais, mas o problema sempre volta.
Eu tive esse problema não muito tempo atrás, quando eu ainda estava com o Windows dual boot, mas então eu poderia inicializar no Windows, que parecia corrigir o som no Ubuntu. Então eu mudei para o Arch, que não teve problemas, e depois voltei para o Ubuntu, e então o problema voltou.
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!!################################
!!ALSA Information Script v 0.4.64
!!################################
!!Script ran on: Fri Dec 8 06:29:01 UTC 2017
!!Linux Distribution
!!------------------
Ubuntu 16.04.3 LTS \n \l DISTRIB_ID=Ubuntu DISTRIB_DESCRIPTION="Ubuntu 16.04.3 LTS" NAME="Ubuntu" ID=ubuntu ID_LIKE=debian PRETTY_NAME="Ubuntu 16.04.3 LTS" HOME_URL="http://www.ubuntu.com/" SUPPORT_URL="http://help.ubuntu.com/" BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/" UBUNTU_CODENAME=xenial
!!DMI Information
!!---------------
Manufacturer: Dell Inc.
Product Name: Inspiron 5559
Product Version:
Firmware Version: 1.3.0
Board Vendor: Dell Inc.
Board Name: 0WTXH9
!!ACPI Device Status Information
!!---------------
/sys/bus/acpi/devices/ACPI0003:00/status 15
/sys/bus/acpi/devices/ACPI000C:00/status 15
/sys/bus/acpi/devices/DELLABCE:00/status 15
/sys/bus/acpi/devices/DLLC6B2:00/status 15
/sys/bus/acpi/devices/DLLK06B2:00/status 15
/sys/bus/acpi/devices/INT33A1:00/status 15
/sys/bus/acpi/devices/INT33D0:00/status 15
/sys/bus/acpi/devices/INT340E:00/status 15
/sys/bus/acpi/devices/INT344B:00/status 15
/sys/bus/acpi/devices/INT3F0D:00/status 15
/sys/bus/acpi/devices/LNXPOWER:00/status 1
/sys/bus/acpi/devices/LNXPOWER:01/status 1
/sys/bus/acpi/devices/LNXPOWER:02/status 1
/sys/bus/acpi/devices/MSFT0101:00/status 15
/sys/bus/acpi/devices/PNP0103:00/status 15
/sys/bus/acpi/devices/PNP0C02:03/status 3
/sys/bus/acpi/devices/PNP0C02:04/status 3
/sys/bus/acpi/devices/PNP0C09:00/status 15
/sys/bus/acpi/devices/PNP0C0A:00/status 31
/sys/bus/acpi/devices/PNP0C0F:00/status 11
/sys/bus/acpi/devices/PNP0C0F:01/status 11
/sys/bus/acpi/devices/PNP0C0F:02/status 11
/sys/bus/acpi/devices/PNP0C0F:03/status 11
/sys/bus/acpi/devices/PNP0C0F:04/status 11
/sys/bus/acpi/devices/PNP0C0F:05/status 11
/sys/bus/acpi/devices/PNP0C0F:06/status 11
/sys/bus/acpi/devices/PNP0C0F:07/status 11
/sys/bus/acpi/devices/device:4e/status 15
/sys/bus/acpi/devices/device:4f/status 15
/sys/bus/acpi/devices/device:53/status 15
/sys/bus/acpi/devices/device:66/status 11
!!Kernel Information
!!------------------
Kernel release: 4.10.0-40-generic
Operating System: GNU/Linux
Architecture: x86_64
Processor: x86_64
SMP Enabled: Yes
!!ALSA Version
!!------------
Driver version: k4.10.0-40-generic
Library version: 1.1.0
Utilities version: 1.1.0
!!Loaded ALSA modules
!!-------------------
!!Sound Servers on this system
!!----------------------------
Pulseaudio:
Installed - Yes (/usr/bin/pulseaudio)
Running - Yes
!!Soundcards recognised by ALSA
!!-----------------------------
--- no soundcards ---
!!PCI Soundcards installed in the system
!!--------------------------------------
00:1f.3 Audio device: Intel Corporation Sunrise Point-LP HD Audio (rev 21)
!!Advanced information - PCI Vendor/Device/Subsystem ID's
!!-------------------------------------------------------
00:1f.3 0403: 8086:9d70 (rev 21)
Subsystem: 1028:06b2
!!Modprobe options (Sound related)
!!--------------------------------
snd_pcsp: index=-2
snd_usb_audio: index=-2
snd_atiixp_modem: index=-2
snd_intel8x0m: index=-2
snd_via82xx_modem: index=-2
snd_atiixp_modem: index=-2
snd_intel8x0m: index=-2
snd_via82xx_modem: index=-2
snd_usb_audio: index=-2
snd_usb_caiaq: index=-2
snd_usb_ua101: index=-2
snd_usb_us122l: index=-2
snd_usb_usx2y: index=-2
snd_cmipci: mpu_port=0x330 fm_port=0x388
snd_pcsp: index=-2
snd_usb_audio: index=-2
snd_hda_intel: model=auto
snd_hda_intel: single_cmd=1
snd_hda_intel: probe_mask=1
!!Loaded sound module options
!!---------------------------
!!ALSA Device nodes
!!-----------------
crw-rw----+ 1 root audio 116, 1 Dec 7 13:53 /dev/snd/seq
crw-rw----+ 1 root audio 116, 33 Dec 7 13:53 /dev/snd/timer
!!Aplay/Arecord output
!!--------------------
APLAY
aplay: device_list:268: no soundcards found...
ARECORD
arecord: device_list:268: no soundcards found...
!!Amixer output
!!-------------
!!Alsactl output
!!--------------
--startcollapse--
--endcollapse--
!!All Loaded Modules
!!------------------
Module
rfcomm
ccm
bnep
nls_iso8859_1
snd_soc_skl
snd_soc_skl_ipc
snd_soc_sst_ipc
snd_soc_sst_dsp
snd_hda_ext_core
snd_soc_sst_match
snd_soc_core
snd_compress
ac97_bus
joydev
i2c_designware_platform
snd_pcm_dmaengine
i2c_designware_core
snd_hda_intel
dell_wmi
sparse_keymap
snd_hda_codec
snd_hda_core
dell_laptop
dell_smbios
dcdbas
rtsx_usb_ms
dell_smm_hwmon
memstick
snd_hwdep
snd_pcm
arc4
snd_seq_midi
snd_seq_midi_event
iwlmvm
snd_rawmidi
mac80211
snd_seq
intel_rapl
x86_pkg_temp_thermal
intel_powerclamp
coretemp
kvm_intel
kvm
uvcvideo
videobuf2_vmalloc
videobuf2_memops
videobuf2_v4l2
videobuf2_core
videodev
hci_uart
btusb
btqca
btrtl
btbcm
btintel
bluetooth
snd_seq_device
snd_timer
media
snd
hid_multitouch
irqbypass
intel_cstate
intel_rapl_perf
soundcore
iwlwifi
cfg80211
mei_me
mei
input_leds
serio_raw
shpchp
idma64
virt_dma
intel_lpss_acpi
intel_lpss_pci
intel_pch_thermal
intel_lpss
tpm_crb
dell_rbtn
mac_hid
acpi_pad
acpi_als
kfifo_buf
industrialio
parport_pc
ppdev
lp
parport
autofs4
btrfs
xor
raid6_pq
algif_skcipher
af_alg
dm_crypt
dm_mirror
dm_region_hash
dm_log
hid_generic
rtsx_usb_sdmmc
usbhid
rtsx_usb
crct10dif_pclmul
crc32_pclmul
ghash_clmulni_intel
pcbc
i915
aesni_intel
aes_x86_64
crypto_simd
glue_helper
cryptd
i2c_algo_bit
drm_kms_helper
syscopyarea
sysfillrect
sysimgblt
fb_sys_fops
r8169
drm
ahci
mii
libahci
wmi
i2c_hid
hid
pinctrl_sunrisepoint
video
pinctrl_intel
fjes
!!ALSA/HDA dmesg
!!--------------
[ 34.129894] input: Dell WMI hotkeys as /devices/virtual/input/input14
[ 34.131090] snd_hda_intel 0000:00:1f.3: enabling device (0000 -> 0002)
[ 34.131276] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
[ 34.160883] snd_hda_intel 0000:00:1f.3: Codec #0 probe error; disabling it...
[ 34.262486] snd_hda_intel 0000:00:1f.3: no codecs initialized
[ 34.308799] input: DLLC6B2:00 06CB:75BF Touchpad as /devices/pci0000:00/0000:00:15.0/i2c_designware.0/i2c-4/i2c-DLLC6B2:00/0018:06CB:75BF.0003/input/input16
Aqui está uma lista de soluções que tentei ou considerei, além de como elas funcionaram para mim:
sudo usermod -a -G pulse ian
de qualquer forma. Nada aconteceu. options snd-hda-intel model=auto
ao alsa-base.conf: sudo alsa force-reload
ou sudo alsa reload
, meu computador simplesmente pára de responder a entrada e eu tenho que reinicializar. oem-audio-hda-daily-dkms
do alsa-daily
repo: Parecia funcionar depois de uma ou mais reinicializações, mas o problema voltou cerca de um dia depois. Toda vez que eu reinstalo o Ubuntu, o som volta. Eu apenas reinstalei no outro dia e está funcionando por enquanto. Desta vez eu configurei snapshots com lvm, então quando o som desaparecer novamente, verificarei se posso diminuir a causa e postar aqui.