USB audio device must be removed and replugged before working rk3399

leung先森

attach the log of kernel and system logcat will be smarter.
only that cannot figure out what s going on

leung先森

3spec Posted at 2/22/2018 08:24
I've come up with a solution of sorts. The USB hub can be reset manually using:

where "3-0:1.0" i ...

try to update the firmware android7.1. make sure the firmware is the newest.
from the log , kernel just fine .
problem might be the framework usb manage.

leung先森

3spec Posted at 2/26/2018 09:38
Thanks for the advice.

The newest version of Android 7.1 does fix this issue. However, it doesn't ...

you mean the simple camera cannot open dual camera no matter mipi and uvc ?