当我尝试在播放器中播放任何内容或游戏中的声音时，声音不起作用。但是浏览器中的声音可以正常工作。我执行了 Ubuntu 声音故障排除aptitude --purge reinstall，但没有任何改变。
aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC269VB Analog [ALC269VB Analog]
Subdevices: 0/1
Subdevice #0: subdevice #0
card 1: Generic [HD-Audio Generic], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
lsmod | grep snd
snd_seq_dummy 12798 0
snd_hda_codec_hdmi 28167 1
snd_hda_codec_realtek 336771 1
snd_hda_intel 33176 3
snd_hda_codec 103804 3
snd_hda_codec_hdmi,snd_hda_codec_realtek,snd_hda_intel
snd_hwdep 13604 1 snd_hda_codec
snd_pcm 96391 4 snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec
snd_seq_midi 13324 0
snd_rawmidi 30486 1 snd_seq_midi
snd_seq_midi_event 14899 1 snd_seq_midi
snd_seq 61621 3 snd_seq_dummy,snd_seq_midi,snd_seq_midi_event
snd_timer 29602 2 snd_pcm,snd_seq
snd_seq_device 14462 4 snd_seq_dummy,snd_seq_midi,snd_rawmidi,snd_seq
snd 67382 15
snd_hda_codec_hdmi, snd_hda_codec_realtek, snd_hda_intel, snd_hda_codec, snd_hwdep,
snd_pcm, snd_rawmidi,snd_seq,snd_timer,snd_seq_device
soundcore 12680 1 snd
snd_page_alloc 18529 2 snd_hda_intel,snd_pcm
lspci -v | grep -iA7 audio
00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 06)
Subsystem: Dell Device 0455
Flags: bus master, fast devsel, latency 0, IRQ 42
Memory at f0400000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: HDA Intel
Kernel modules: snd-hda-intel
--
02:00.1 Audio device: ATI Technologies Inc Manhattan HDMI Audio [Mobility Radeon HD 5000 Series]
Subsystem: Dell Device 0455
Flags: bus master, fast devsel, latency 0, IRQ 43
Memory at cfedc000 (64-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: HDA Intel
Kernel modules: snd-hda-intel
任何帮助是极大的赞赏。
LE：这是我运行 alsa-info.sh 脚本时得到的输出。http://paste.pocoo.org/show/546032/
答案1
问题出在有两块声卡，一块是板载声卡，一块是显卡自带的声卡。停用后者后声音就可以正常播放了。