本帖最后由 lon 于 2018-3-13 17:29 编辑

机子是一体机，重装过多次，内置的喇叭都无法发出声音，喇叭硬件是完好了，装WIN系统都可以出声


无意中插入外接耳机，外接耳机可以有声音，但内置的喇叭无声

aplay -l  结果如下

**** 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: ALC662 rev1 Analog [ALC662 rev1 Analog]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
再上个图吧



还发现一个问题，进入桌面前一瞬间，屏总要黑一下，截屏时，也要黑一下，设四角热区也会黑一下屏，板载的intel显卡