树莓派4b
ubuntu 21.04
>>> aplay -laplay: device_list:276: no soundcards found...
解决办法：
>>> sudo vim /boot/config-5.11.0-1015-raspi
...dtparam=audio=on
# 重启>>> sudo reboot now
>>> aplay -l
**** List of PLAYBACK Hardware Devices ****card 0: Headphones [bcm2835 Headphones], device 0: bcm2835 Headphones [bcm2835 Headphones]Subdevices: 8/8Subdevice #0: subdevice #0Subdevice #1: subdevice #1Subdevice #2: subdevice #2Subdevice #3: subdevice #3Subdevice #4: subdevice #4Subdevice #5: subdevice #5Subdevice #6: subdevice #6Subdevice #7: subdevice #7card 1: vc4hdmi0 [vc4-hdmi-0], device 0: MAI PCM vc4-hdmi-hifi-0 [MAI PCM vc4-hdmi-hifi-0]Subdevices: 1/1Subdevice #0: subdevice #0card 2: vc4hdmi1 [vc4-hdmi-1], device 0: MAI PCM vc4-hdmi-hifi-0 [MAI PCM vc4-hdmi-hifi-0]Subdevices: 1/1Subdevice #0: subdevice #0
参考：https://discourse.osmc.tv/t/alsa-doesnt-work-after-last-update/10600/3
