10-05-2018, 12:23 AM
As a result of various investigations,
These problems turned out to be caused by the kernel side.
The issues is as follows (0.7.9: gitlab-ci-linux-build-67: 4.4.132-1075)
1. "es8316-sound" no sound.
2. "spdif-sound" no sound.
3. "serial-console output" contains garbage.
All of the above issues have been solved by modifying kernel.
---
*Additional information)
At currently the newest kernel (4.4.154-1122),
all sound (in addition to the above, "hdmi-sound" also) can not output.
I also confirmed that it works correctly with the same modification.
These problems turned out to be caused by the kernel side.
The issues is as follows (0.7.9: gitlab-ci-linux-build-67: 4.4.132-1075)
1. "es8316-sound" no sound.
2. "spdif-sound" no sound.
3. "serial-console output" contains garbage.
All of the above issues have been solved by modifying kernel.
---
*Additional information)
At currently the newest kernel (4.4.154-1122),
all sound (in addition to the above, "hdmi-sound" also) can not output.
I also confirmed that it works correctly with the same modification.