我有一台华硕 N550JA 笔记本电脑，它有一个外置低音炮，从 Ubuntu 14.04.4 开始它就不工作了，奇怪的是它在 Ubuntu 14.04.3 下可以工作，但更新后它就不工作了，似乎是 alsa 设置的问题。
我现在想让它在 Ubuntu 16.10 中运行。有人能帮我解决这个问题吗？
以下是一些输出：
sudo lspci -v | grep -A7 -i "audio"
00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06)
Subsystem: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller
Flags: bus master, fast devsel, latency 0, IRQ 37
Memory at f7e14000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [50] Power Management version 2
Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
Kernel driver in use: snd_hda_intel
Kernel modules: snd_hda_intel
--
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 04)
Subsystem: ASUSTeK Computer Inc. 8 Series/C220 Series Chipset High Definition Audio Controller
Flags: bus master, fast devsel, latency 0, IRQ 36
Memory at f7e10000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [50] Power Management version 2
Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
Capabilities: [100] Virtual Channel
Kernel driver in use: snd_hda_intel
sudo aplay -l
**** Lista PLAYBACK de dispozitive ****
placa 0: HDMI [HDA Intel HDMI], dispozitiv 3: HDMI 0 [HDMI 0]
subdispozitive: 1/1
Subdispozitiv #0: subdevice #0
placa 0: HDMI [HDA Intel HDMI], dispozitiv 7: HDMI 1 [HDMI 1]
subdispozitive: 1/1
Subdispozitiv #0: subdevice #0
placa 0: HDMI [HDA Intel HDMI], dispozitiv 8: HDMI 2 [HDMI 2]
subdispozitive: 1/1
Subdispozitiv #0: subdevice #0
placa 1: PCH [HDA Intel PCH], dispozitiv 0: ALC668 Analog [ALC668 Analog]
subdispozitive: 0/1
Subdispozitiv #0: subdevice #0
amixer -c 0
Simple mixer control 'IEC958',0
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
Simple mixer control 'IEC958',1
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]
Simple mixer control 'IEC958',2
Capabilities: pswitch pswitch-joined
Playback channels: Mono
Mono: Playback [on]