Ubuntu HDMI连接后没有声音解决办法

#查看声卡

[email protected]:~#aplay -l

**** List of PLAYBACK Hardware Devices ****

card 0: HDMI [HDA Intel HDMI], device 3: HDMI 0 [HDMI 0]

  Subdevices: 1/1

  Subdevice #0: subdevice #0

card 0: HDMI [HDA Intel HDMI], device 7: HDMI 1 [HDMI 1]

  Subdevices: 1/1

  Subdevice #0: subdevice #0

card 0: HDMI [HDA Intel HDMI], device 8: HDMI 2 [HDMI 2]

  Subdevices: 1/1

  Subdevice #0: subdevice #0

card 0: HDMI [HDA Intel HDMI], device 9: HDMI 3 [HDMI 3]

  Subdevices: 1/1

  Subdevice #0: subdevice #0

card 0: HDMI [HDA Intel HDMI], device 10: HDMI 4 [HDMI 4]

  Subdevices: 1/1

  Subdevice #0: subdevice #0

card 1: PCH [HDA Intel PCH], device 0: ALC233 Analog [ALC233 Analog]

  Subdevices: 0/1

  Subdevice #0: subdevice #0

#设置默认声卡，我的HDMI外接屏幕没有喇叭，所以设置笔记本内置的声卡为默认声卡，声卡编号为1。

#需要在/etc/下新建一个文件asound.conf，文件内容如下

[email protected]:~# cat /etc/asound.conf

defaults.ctl.card 1

defaults.pcm.card 1

defaults.timer.card 1

#进入用户主目录

cd ~

#将/etc/asound.conf复制到用户主目录下，并重命名为.asoundrc

cp /etc/asound.conf ./.asoundrc

#重启电脑即可