Linux Problem solving _arch system installation is complete no sound

Rt

Their machine is Lenovo y410p, before the installation of the arch system has been unable to play sound, and do not know how to set up, today, the computer configuration, incidentally, the sound of the problem solved.

The Arch default kernel has been ALSA with a set of modules and does not have to be specifically installed.

ALSA refer to the Arch website Wiki:https://wiki.archlinux.org/index.php/alsa_%e5%ae%89%e8%a3%85%e8%ae%be%e7%bd%ae_ (%E7%AE%80%E4% bd%93%e4%b8%ad%e6%96%87)

It seems that after installing the system sound card can work, but the system default sound card sound is muted, to unmute.

Mute each channel

Using alsamixer the Ncurses interface, the configuration is simple:

Alsamixer

In alsamixer , the channels marked below MM are muted, and 00 the marked channels are enabled.

Use←And→Arrow key, selectMasterAndPCMChannel. Press themKey to Unmute. Use↑The arrow keys increase the volume until the gain value is0。 The value is displayed in the upper leftItem:After the field. Excessive gain values can result in sound distortion.

You can also use the command

Amixer Sset Master Unmute

I am in here the problem, originally directly with alsamixer set or no sound, I used the above command, appeared

Amixer:unable to find simple control ' Master ', 0

Indicates that the device cannot be set, or cannot find a sound card, and I thought there was no sound card driver installed,,,with the commandget the sound card ID and device ID of the sound card

Aplay-l

jun% aplay-l**** List of PLAYBACK Hardware Devices ****card 0:hdmi [HDA Intel HDMI], device 3:HDMI 0 [HDMI 0]  Subde VICES:1/1  subdevice #0: Subdevice #0card 0:hdmi [HDA Intel HDMI], device 7:HDMI 1 [HDMI 1]  SUBDEVICES:1/1  Subdevice #0: Subdevice #0card 0:hdmi [HDA Intel HDMI], device 8:HDMI 2 [HDMI 2]  subdevices:1/1  subdevice #0: S Ubdevice #0card 1:pch [HDA Intel PCH], device 0:alc282 Analog [ALC282 Analog]  subdevices:1/1  subdevice #0: subd Evice #0card 1:pch [HDA Intel PCH], device 1:alc282 Digital [ALC282 Digital]  subdevices:1/1  subdevice #0: Subde Vice #0

Everything seems normal. Configuring audio in Amixer

jun% amixer scontrolssimple mixer control ' IEC958 ', 0Simple mixer control ' IEC958 ', 1Simple mixer control ' IEC958 ', 2

scared, no configuration, no wonder I can't find "Master"a little skeptical that maybe the default sound card is incorrect,again amixer

jun% amixer-c 1 scontrolssimple mixer control ' Master ', 0Simple mixer control ' headphone ', 0Simple mixer control ' Speaker ', 0Simple mixer control ' PCM ', 0Simple mixer control ' mic ', 0Simple mixer control ' mic Boost ', 0Simple mixer control ' IEC958 ', 0 Simple mixer control ' IEC958 Default PCM ', 0Simple mixer control ' Beep ', 0Simple mixer control ' Capture ', 0Simple mixer contr Ol ' Auto-mute Mode ', 0Simple mixer control ' Internal Mic Boost ', 0

It's normal this time. The problem is that the default sound card is incorrect, and then the default sound card is modified. in the aplay-l just now select sound card 1, device ID 0 sound cardAdd the following configuration to the system-level/etc/asound.conf or user-level ~/.ASOUNDRC file. If the file does not exist, you can create it manually. Each of these IDs, please adjust according to the actual situation:
Defaults.pcm.card 1
Defaults.pcm.device 0
Defaults.ctl.card 1
The PCM option determines which device is used to play the audio, and the "CTL" option determines that the sound card can be used by a control tool such as Alsamixer. The above configuration takes effect immediately after restarting an audio program, such as MPlayer.
so the problem of the computer without sound is solved.

Linux Problem solving _arch system installation is complete no sound