我之前遇到过一个问题，Ubuntu 无法检测到我的耳机，现在还没有解决。
现在的问题是，当我alsamixer在终端中输入时，我得到了cannot open mixer: No such file or directory，而当我输入时，aplay -l我得到了aplay: device_list:268: no soundcards found...。
当我输入时，Ubuntu 确实找到了我的声卡lspci -v | grep -i audio，它返回以下内容：
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 05)
Subsystem: ASUSTeK Computer Inc. 8 Series/C220 Series Chipset High Definition Audio Controller
01:00.1 Audio device: NVIDIA Corporation GM204 High Definition Audio Controller (rev a1)
Subsystem: NVIDIA Corporation GM204 High Definition Audio Controller
还cat /proc/asound/cards提供了cat: /proc/asound/cards: No such file or directory
我尝试重新安装 alsa-base、alsa-utils 和 linux-sound-base，也尝试过
sudo aptitude --purge reinstall linux-sound-base alsa-base alsa-utils linux-image-`uname -r` linux-ubuntu-modules-`uname -r` libasound2
但没有成功。
声音设置显示“虚拟输出”作为扬声器。
sudo lspci -vnn | awk -vRS= '/Audio device/'
生成这个：
00:1b.0 Audio device [0403]: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller [8086:8c20] (rev 05)
Subsystem: ASUSTeK Computer Inc. 8 Series/C220 Series Chipset High Definition Audio Controller [1043:12ff]
Flags: bus master, fast devsel, latency 0, IRQ 3
Memory at ed410000 (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
01:00.1 Audio device [0403]: NVIDIA Corporation GM204 High Definition Audio Controller [10de:0fbb] (rev a1)
Subsystem: NVIDIA Corporation GM204 High Definition Audio Controller [10de:0fbb]
Flags: bus master, fast devsel, latency 0, IRQ 10
Memory at ed080000 (32-bit, non-prefetchable) [size=16K]
Capabilities: [60] Power Management version 3
Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+
Capabilities: [78] Express Endpoint, MSI 00