After a lot of messages like this:
Sep 15 20:35:14 bpi-iot-ros-ai kernel: [ 641.701288] sunxi-mmc sdc0: Has wait r1 rdy c23368 i1
my BPI-M2 Ultra is stuck. Ni any commands is applied. Could somebody help me to find the reason of this problem? Which information I should provide as additional?
Linux bpi-iot-ros-ai 3.10.65-BPI-M2U-Kernel #1 SMP Mon Jul 10 14:02:19 CST 2017 armv7l armv7l armv7l GNU/Linux