According to your suggestion, I am using ubuntu 22.04 desktop on Edge2. The Mali GPU is working great. However, we encountered another problem. We pluged in a USB sound card. Using
alpay -l aplay -D plughw:4,0 test.wav
we can found the device and play the test file. But when we changed to the system setting, we just can’t find the USB sound card device and let it be the default sound player. Any suggestions would be really appreciated.