昨天我的音频工作正常，但今天我只有一个“虚拟音频”条目。当我跑步时AlsaInfo我得到：
!!################################
!!ALSA Information Script v 0.4.64
!!################################
!!Script ran on: Fri Oct 6 12:19:21 UTC 2017
!!Linux Distribution
!!------------------
Fedora release 26 (Twenty Six) NAME=Fedora ID=fedora PRETTY_NAME="Fedora 26 (Workstation Edition)" CPE_NAME="cpe:/o:fedoraproject:fedora:26" HOME_URL="https://fedoraproject.org/" BUG_REPORT_URL="https://bugzilla.redhat.com/" REDHAT_BUGZILLA_PRODUCT="Fedora" REDHAT_BUGZILLA_PRODUCT_VERSION=26 REDHAT_SUPPORT_PRODUCT="Fedora" REDHAT_SUPPORT_PRODUCT_VERSION=26 PRIVACY_POLICY_URL=https://fedoraproject.org/wiki/Legal:PrivacyPolicy Fedora release 26 (Twenty Six) Fedora release 26 (Twenty Six)
!!DMI Information
!!---------------
Manufacturer: Acer
Product Name: Aspire 4750
Product Version: V2.01
Firmware Version: V2.01
Board Vendor: Acer
Board Name: Aspire 4750
!!ACPI Device Status Information
!!---------------
/sys/bus/acpi/devices/ACPI0003:00/status 15
/sys/bus/acpi/devices/INT340E:00/status 15
/sys/bus/acpi/devices/INT3F0D:00/status 15
/sys/bus/acpi/devices/PNP0103:00/status 15
/sys/bus/acpi/devices/PNP0C09:00/status 15
/sys/bus/acpi/devices/PNP0C0A:00/status 31
/sys/bus/acpi/devices/PNP0C0F:00/status 9
/sys/bus/acpi/devices/PNP0C0F:01/status 9
/sys/bus/acpi/devices/PNP0C0F:02/status 9
/sys/bus/acpi/devices/PNP0C0F:03/status 9
/sys/bus/acpi/devices/PNP0C0F:04/status 9
/sys/bus/acpi/devices/PNP0C0F:05/status 9
/sys/bus/acpi/devices/PNP0C0F:06/status 9
/sys/bus/acpi/devices/PNP0C0F:07/status 9
/sys/bus/acpi/devices/device:27/status 15
!!Kernel Information
!!------------------
Kernel release: 4.13.4-200.fc26.x86_64
Operating System: GNU/Linux
Architecture: x86_64
Processor: x86_64
SMP Enabled: Yes
!!ALSA Version
!!------------
Driver version: k4.13.4-200.fc26.x86_64
Library version:
Utilities version: 1.1.4
!!Loaded ALSA modules
!!-------------------
snd_hda_intel
!!Sound Servers on this system
!!----------------------------
Pulseaudio:
Installed - Yes (/usr/bin/pulseaudio)
Running - Yes
!!Soundcards recognised by ALSA
!!-----------------------------
0 [PCH ]: HDA-Intel - HDA Intel PCH
HDA Intel PCH at 0xf0600000 irq 27
!!PCI Soundcards installed in the system
!!--------------------------------------
00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 04)
!!Advanced information - PCI Vendor/Device/Subsystem ID's
!!-------------------------------------------------------
00:1b.0 0403: 8086:1c20 (rev 04)
Subsystem: 1025:0506
!!Loaded sound module options
!!---------------------------
!!Module: snd_hda_intel
align_buffer_size : -1
bdl_pos_adj : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
beep_mode : N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N,N
enable : Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y,Y
enable_msi : -1
id : (null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null)
index : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
jackpoll_ms : 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
model : (null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null)
patch : (null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null),(null)
position_fix : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
power_save : 0
power_save_controller : Y
probe_mask : -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1
probe_only : 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
single_cmd : -1
snoop : -1
!!HDA-Intel Codec information
!!---------------------------
--startcollapse--
Codec: Intel CougarPoint HDMI
Address: 3
AFG Function Id: 0x1 (unsol 0)
Vendor Id: 0x80862805
Subsystem Id: 0x80860101
Revision Id: 0x100000
No Modem Function Group found
Default PCM:
rates [0x0]:
bits [0x0]:
formats [0x0]:
Default Amp-In caps: N/A
Default Amp-Out caps: N/A
State of AFG node 0x01:
Power states: D0 D3 CLKSTOP EPSS
Power: setting=D0, actual=D0, Clock-stop-OK
GPIO: io=0, o=0, i=0, unsolicited=0, wake=0
Node 0x02 [Audio Output] wcaps 0x6611: 8-Channels Digital
Converter: stream=5, channel=0
Digital: Enabled
Digital category: 0x0
IEC Coding Type: 0x0
PCM:
rates [0x7f0]: 32000 44100 48000 88200 96000 176400 192000
bits [0x1e]: 16 20 24 32
formats [0x5]: PCM AC3
Power states: D0 D3 EPSS
Power: setting=D0, actual=D0
Node 0x03 [Audio Output] wcaps 0x6611: 8-Channels Digital
Converter: stream=0, channel=0
Digital: Enabled
Digital category: 0x0
IEC Coding Type: 0x0
PCM:
rates [0x7f0]: 32000 44100 48000 88200 96000 176400 192000
bits [0x1e]: 16 20 24 32
formats [0x5]: PCM AC3
Power states: D0 D3 EPSS
Power: setting=D0, actual=D0
Node 0x04 [Audio Output] wcaps 0x6611: 8-Channels Digital
Converter: stream=0, channel=0
Digital: Enabled
Digital category: 0x0
IEC Coding Type: 0x0
PCM:
rates [0x7f0]: 32000 44100 48000 88200 96000 176400 192000
bits [0x1e]: 16 20 24 32
formats [0x5]: PCM AC3
Power states: D0 D3 EPSS
Power: setting=D0, actual=D0
Node 0x05 [Pin Complex] wcaps 0x40778d: 8-Channels Digital Amp-Out CP
Control: name="IEC958 Playback Con Mask", index=0, device=0
Control: name="IEC958 Playback Pro Mask", index=0, device=0
Control: name="IEC958 Playback Default", index=0, device=0
Control: name="IEC958 Playback Switch", index=0, device=0
Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
Amp-Out vals: [0x00 0x00]
Pincap 0x09000094: OUT Detect HBR HDMI DP
Pin Default 0x18560010: [Jack] Digital Out at Int HDMI
Conn = Digital, Color = Unknown
DefAssociation = 0x1, Sequence = 0x0
Pin-ctls: 0x40: OUT
Unsolicited: tag=00, enabled=0
Power states: D0 D3 EPSS
Power: setting=D0, actual=D0
Connection: 1
0x02
Node 0x06 [Pin Complex] wcaps 0x40778d: 8-Channels Digital Amp-Out CP
Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
Amp-Out vals: [0x00 0x80]
Pincap 0x09000094: OUT Detect HBR HDMI DP
Pin Default 0x58560020: [N/A] Digital Out at Int HDMI
Conn = Digital, Color = Unknown
DefAssociation = 0x2, Sequence = 0x0
Pin-ctls: 0x40: OUT
Unsolicited: tag=00, enabled=0
Power states: D0 D3 EPSS
Power: setting=D0, actual=D0
Connection: 1
0x03
Node 0x07 [Pin Complex] wcaps 0x40778d: 8-Channels Digital Amp-Out CP
Amp-Out caps: ofs=0x00, nsteps=0x00, stepsize=0x00, mute=1
Amp-Out vals: [0x00 0x80]
Pincap 0x09000094: OUT Detect HBR HDMI DP
Pin Default 0x58560030: [N/A] Digital Out at Int HDMI
Conn = Digital, Color = Unknown
DefAssociation = 0x3, Sequence = 0x0
Pin-ctls: 0x40: OUT
Unsolicited: tag=00, enabled=0
Power states: D0 D3 EPSS
Power: setting=D0, actual=D0
Connection: 1
0x04
Node 0x08 [Vendor Defined Widget] wcaps 0xf00000: Mono
--endcollapse--
!!ALSA Device nodes
!!-----------------
crw-rw---- 1 root audio 116, 2 Oct 6 20:17 /dev/snd/controlC0
crw-rw---- 1 root audio 116, 4 Oct 6 20:17 /dev/snd/hwC0D3
crw-rw---- 1 root audio 116, 3 Oct 6 20:17 /dev/snd/pcmC0D3p
crw-rw---- 1 root audio 116, 1 Oct 6 20:17 /dev/snd/seq
crw-rw---- 1 root audio 116, 33 Oct 6 20:17 /dev/snd/timer
/dev/snd/by-path:
total 0
drwxr-xr-x. 2 root root 60 Oct 6 20:17 .
drwxr-xr-x. 3 root root 160 Oct 6 20:17 ..
lrwxrwxrwx. 1 root root 12 Oct 6 20:17 pci-0000:00:1b.0 -> ../controlC0
!!ALSA configuration files
!!------------------------
!!System wide config file (/etc/asound.conf)
#
# Place your global alsa-lib configuration here...
#
!!Aplay/Arecord output
!!--------------------
APLAY
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
ARECORD
**** List of CAPTURE Hardware Devices ****
!!Amixer output
!!-------------
!!-------Mixer controls for card 0 [PCH]
Card hw:0 'PCH'/'HDA Intel PCH at 0xf0600000 irq 27'
Mixer name : 'Intel CougarPoint HDMI'
Components : 'HDA:80862805,80860101,00100000'
Controls : 8
Simple ctrls : 2
Simple mixer control 'PCM',0
Capabilities: pvolume
Playback channels: Front Left - Front Right
Limits: Playback 0 - 255
Mono:
Front Left: Playback 0 [0%] [-51.00dB]
Front Right: Playback 0 [0%] [-51.00dB]
Simple mixer control 'IEC958',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
!!Alsactl output
!!--------------
--startcollapse--
state.PCH {
control.1 {
iface CARD
name 'HDMI/DP,pcm=3 Jack'
value false
comment {
access read
type BOOLEAN
count 1
}
}
control.2 {
iface MIXER
name 'IEC958 Playback Con Mask'
value '0fff000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
comment {
access read
type IEC958
count 1
}
}
control.3 {
iface MIXER
name 'IEC958 Playback Pro Mask'
value '0f00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
comment {
access read
type IEC958
count 1
}
}
control.4 {
iface MIXER
name 'IEC958 Playback Default'
value '0400000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'
comment {
access 'read write'
type IEC958
count 1
}
}
control.5 {
iface MIXER
name 'IEC958 Playback Switch'
value true
comment {
access 'read write'
type BOOLEAN
count 1
}
}
control.6 {
iface PCM
device 3
name ELD
value ''
comment {
access 'read volatile'
type BYTES
count 0
}
}
control.7 {
iface PCM
device 3
name 'Playback Channel Map'
value.0 0
value.1 0
value.2 0
value.3 0
value.4 0
value.5 0
value.6 0
value.7 0
comment {
access 'read write'
type INTEGER
count 8
range '0 - 36'
}
}
control.8 {
iface MIXER
name 'PCM Playback Volume'
value.0 0
value.1 0
comment {
access 'read write user'
type INTEGER
count 2
range '0 - 255'
tlv '0000000100000008ffffec1400000014'
dbmin -5100
dbmax 0
dbvalue.0 -5100
dbvalue.1 -5100
}
}
}
--endcollapse--
!!All Loaded Modules
!!------------------
Module
rfcomm
ccm
xt_CHECKSUM
ipt_MASQUERADE
nf_nat_masquerade_ipv4
tun
nf_conntrack_netbios_ns
nf_conntrack_broadcast
xt_CT
ip6t_rpfilter
ip6t_REJECT
nf_reject_ipv6
xt_conntrack
ip_set
nfnetlink
ebtable_nat
ebtable_broute
bridge
stp
llc
ip6table_nat
nf_conntrack_ipv6
nf_defrag_ipv6
nf_nat_ipv6
ip6table_mangle
ip6table_raw
ip6table_security
iptable_nat
nf_conntrack_ipv4
nf_defrag_ipv4
nf_nat_ipv4
nf_nat
nf_conntrack
libcrc32c
iptable_mangle
iptable_raw
iptable_security
ebtable_filter
ebtables
ip6table_filter
ip6_tables
bnep
vmnet
ppdev
parport_pc
parport
fuse
vmw_vsock_vmci_transport
vsock
vmw_vmci
vmmon
sunrpc
ath3k
btusb
btrtl
btbcm
btintel
bluetooth
ecdh_generic
intel_rapl
x86_pkg_temp_thermal
intel_powerclamp
coretemp
kvm_intel
arc4
kvm
acer_wmi
iTCO_wdt
sparse_keymap
gpio_ich
wmi_bmof
iTCO_vendor_support
irqbypass
ath9k
crct10dif_pclmul
crc32_pclmul
ghash_clmulni_intel
intel_cstate
ath9k_common
ath9k_hw
intel_uncore
intel_rapl_perf
mac80211
snd_hda_codec_hdmi
uvcvideo
videobuf2_vmalloc
videobuf2_memops
videobuf2_v4l2
snd_hda_intel
videobuf2_core
ath
joydev
snd_hda_codec
cfg80211
videodev
snd_hda_core
snd_hwdep
snd_seq
snd_seq_device
i2c_i801
snd_pcm
media
snd_timer
snd
rfkill
soundcore
mei_me
mei
shpchp
lpc_ich
wmi
i915
hid_logitech_hidpp
crc32c_intel
serio_raw
i2c_algo_bit
drm_kms_helper
sdhci_pci
sdhci
drm
mmc_core
tg3
ptp
pps_core
hid_logitech_dj
video
!!Sysfs Files
!!-----------
/sys/class/sound/hwC0D3/init_pin_configs:
0x05 0x18560010
0x06 0x58560020
0x07 0x58560030
/sys/class/sound/hwC0D3/driver_pin_configs:
/sys/class/sound/hwC0D3/user_pin_configs:
/sys/class/sound/hwC0D3/init_verbs:
/sys/class/sound/hwC0D3/hints:
!!ALSA/HDA dmesg
!!--------------
[ 4.778776] Linux video capture interface: v2.00
[ 4.787107] snd_hda_intel 0000:00:1b.0: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915])
[ 4.804639] uvcvideo: Found UVC 1.00 device 1.3M HD WebCam (064e:d20c)
--
[ 4.810183] USB Video Class driver (1.1.1)
[ 4.816818] input: HDA Intel PCH HDMI/DP,pcm=3 as /devices/pci0000:00/0000:00:1b.0/sound/card0/input11
[ 4.860725] RAPL PMU: API unit is 2^-32 Joules, 3 fixed counters, 163840 ms ovfl timer
不知道如何解决这个问题。我尝试重新安装内核，但没有帮助。
答案1
我在Fedora 22升级到27后遇到这个问题。这是由新组引起的；您必须是该audio组的成员才能访问 snd 设备；
~ > ll /dev/snd/controlC*
crw-rw----. 1 root audio 116, 2 Mar 31 08:27 /dev/snd/controlC0
crw-rw----. 1 root audio 116, 9 Mar 31 08:27 /dev/snd/controlC1
使用 来检查您的组id。我添加了usermod -G audio,... <myuser>，但可能还有其他方法。
答案2
对我来说，这种情况有时会在暂停后发生。是什么帮助并重新启动了pulseaudio：
pulseaudio --kill
这使我的音频恢复正常，而无需重新启动桌面会话。 （Ubuntu 20.04，全部默认）
答案3
这是一个错误的配置。重命名~/.config/pulse，然后重新启动桌面会话（注销，登录）
答案4
就我而言，更新系统后，由于缺少声音驱动程序，出现了类似的错误。
解决方案是安装该软件包：
sudo apt install linux-modules-extra-5.8.0-55-generic
并重新启动