如何解決 CentOS 6.4 帶 USB 耳機無聲音的問題？

擁有一台全新安裝 CentOS 6.4 的新戴爾機器。

我有一個通過 USB 連接的耳機，但沒有聲音。

我不確定 CentOS 是否能夠辨識我的音效卡——或者它可能無法辨識 USB 耳機？

卡和耳機在 /proc/asound/cards 中列出：

[root@Azaz07 asound]# cat cards
0 [Intel          ]: HDA-Intel - HDA Intel
                     HDA Intel at 0xf7d10000 irq 30

1 [USB            ]: USB-Audio - Plantronics .Audio 478 USB
                     Plantronics Plantronics .Audio 478 USB at usb-0000:00:1a.0-1.3, full speed

我成功地按照此處的步驟安裝了 kmod-alsa，但似乎沒有什麼不同。

我還嘗試將“聲音和影片”安裝為組包，詳見此處，但出現錯誤：

[root@Azaz07 ~]# yum groupinstall "Sound and Video"
Loaded plugins: fastestmirror, refresh-packagekit, security
Loading mirror speeds from cached hostfile
* base: mirrors.sonic.net
* elrepo: elrepo.org
* extras: centos.mirror.freedomvoice.com
* rpmforge: mirror.hmc.edu
* updates: mirror.pac-12.org
Setting up Group Process
Checking for new repos for mirrors
Warning: Group Sound and Video does not exist.
No packages in any requested group available to install or update

我應該從這裡檢查/排除故障以使我的 USB 耳機正常工作？

lsusb

首先要嘗試的是確保設備在插入時顯示出來。

例子

我有一個羅技耳機。

$ lsusb
Bus 002 Device 006: ID 046d:0a01 Logitech, Inc. USB Headset
Bus 002 Device 005: ID 046d:c521 Logitech, Inc. Cordless Mouse Receiver
Bus 002 Device 004: ID 17ef:1003 Lenovo Integrated Smart Card Reader
Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

您可以通過啟用-v開關來了解更多資訊lsusb。

例子

$ lsusb -v | less
Bus 002 Device 006: ID 046d:0a01 Logitech, Inc. USB Headset
Device Descriptor:
 bLength                18
 bDescriptorType         1
 bcdUSB               1.10
 bDeviceClass            0 (Defined at Interface level)
 bDeviceSubClass         0 
 bDeviceProtocol         0 
 bMaxPacketSize0         8
 idVendor           0x046d Logitech, Inc.
 idProduct          0x0a01 USB Headset
 bcdDevice           10.13
 iManufacturer           1 
 iProduct                2 
 iSerial                 0 
 bNumConfigurations      1
 Configuration Descriptor:
   bLength                 9
   bDescriptorType         2
   wTotalLength          318
   bNumInterfaces          3
   bConfigurationValue     1
   iConfiguration          0 
...

dmesg

接下來檢查硬體是否顯示為通過dmesg輸出正確檢測到。

$ dmesg
...
[237717.191322] usb 2-1.1: USB disconnect, address 3
[237717.387495] usb 2-1.1: new low speed USB device using ehci_hcd and address 5
[237717.482484] usb 2-1.1: New USB device found, idVendor=046d, idProduct=c521
[237717.482487] usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[237717.482489] usb 2-1.1: Product: USB Receiver
[237717.482491] usb 2-1.1: Manufacturer: Logitech
[237717.488818] input: Logitech USB Receiver as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1/2-1.1:1.0/input/input10
[237717.488955] generic-usb 0003:046D:C521.0003: input,hidraw0: USB HID v1.11 Mouse [Logitech USB Receiver] on usb-0000:00:1d.0-1.1/input0
[237717.495771] input: Logitech USB Receiver as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.1/2-1.1:1.1/input/input11
[237717.495984] generic-usb 0003:046D:C521.0004: input,hiddev96,hidraw1: USB HID v1.11 Device [Logitech USB Receiver] on usb-0000:00:1d.0-1.1/input1
[240126.944155] usb 2-1.2: new full speed USB device using ehci_hcd and address 6
[240127.034731] usb 2-1.2: New USB device found, idVendor=046d, idProduct=0a01
[240127.034735] usb 2-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[240127.034738] usb 2-1.2: Product: Logitech USB Headset
[240127.034740] usb 2-1.2: Manufacturer: Logitech
[240127.232622] usbcore: registered new interface driver snd-usb-audio

聲音偏好

在 GNOME 的揚聲器小程序下，您可以訪問系統的聲音首選項。確保選擇揚聲器作為有源輸出設備。

                       

          

引用自：https://unix.stackexchange.com/questions/103124