Sunxi-mmc floods dmesg

Banana Pi BPI-M2 Ultra / BPI-M2 Berry
1

Hi all,

I’ve had my BPi-M2U for over a year now. Installed the latest ubuntu mate at the beginning of this year. Recently I have been having problems. Either the M2U wont let me SSH into the device, or it doesnt let me reboot it. I have to power cycle the device to get it to restart. The systemd-journald process runs at 100% cpu, and floods dmesg with: sunxi-mmc sdc0: Has wait r1 rdy c23368 i1. I’ve read M2U stuck Post but I am using a newer kernel. uname -a Linux bpi-iot-ros-ai 3.10.107-BPI-M2U-Kernel #1 SMP Thu Aug 24 08:01:24 CST 2017 armv7l armv7l armv7l GNU/Linux

Any help would be appreciated, thanks!

2

Does anyone know if this problem is fixed in kernel version 3.10.108? I disabled and masked the journald service but that is not really a solution…

3

Hello, Did you mean you could not use ssh to enter the M2U, and could not reboot M2U in ssh mode？ Could you please give me more detail about this problem？

4

the systemd-journald.service runs at 100% cpu and the m2u runs really slow or not at all. dmesg is flooded with those messages, cant reboot, cant ssh into the device, you have to power cycle.

5

what image do you use?

what did you do cause 100% cpu rate?

6

the systemd-journald process uses 100% cpu, when I look at “dmesg -w” I can see numerous messages like “sunxi-mmc sdc0: Has wait r1 rdy c23368” every second. (on a side note this was once or twice i could still ssh into the device)

I use: Linux bpi-iot-ros-ai 3.10.107-BPI-M2U-Kernel #1 SMP Thu Aug 24 08:01:24 CST 2017 armv7l armv7l armv7l GNU/Linux