Bananapi suddenly powers off
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I tried the Armbian_5.34.171119_Bananapi_Debian_stretch_next_4.13.13: it seems to have problems, when using an usb hub. Connected when booting after showing the login it seems to have a power loss. Connecting the hub after login it take some time and then the same: the BananaPi is complete off. I already checked the cables an power supply.

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6 minutes ago, 123martin said:

Connecting the hub after login it take some time and then the same: the BananaPi is complete off.


http://sprunge.us/eiFf
There are no problems with Armbian. Bananapi M1 + USB hub + AC Wireless access point. Connected at boot time or later, in any case, it works perfectly fine. 

Armbian is not responsible for hardware design failures. Either use powered USB hub or some other board.

 

 

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48 minutes ago, 123martin said:

Connecting the hub after login it take some time and then the same: the BananaPi is complete off. I already checked the cables an power supply.

 

So it's time to check the voltage available to your setup. Please repeat the test with the same image without the USB hub connected, then execute 'sudo armbianmonitor -m' in a SSH shell, wait 10 seconds and then connect the hub. Please provide armbianmonitor output here afterwards.

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1 hour ago, tkaiser said:

 

So it's time to check the voltage available to your setup. Please repeat the test with the same image without the USB hub connected, then execute 'sudo armbianmonitor -m' in a SSH shell, wait 10 seconds and then connect the hub. Please provide armbianmonitor output here afterwards.

 

Here you go:


Time        CPU    load %cpu %sys %usr %nice %io %irq   CPU   PMIC   DC-IN  C.St.

13:07:49:  960MHz  0.25  11%   8%   2%   0%   0%   0% 37.6°C 27.2°C   4.92V  0/6
13:07:54:  960MHz  0.23   6%   6%   0%   0%   0%   0% 37.7°C 27.1°C   4.95V  0/6
13:08:00:  960MHz  0.21   7%   7%   0%   0%   0%   0% 37.5°C 26.9°C   4.92V  0/6
# usb hub (with mouse and keyboard) connected
13:08:06:  960MHz  0.19  10%   8%   1%   0%   0%   0% 38.3°C 28.2°C   4.88V  0/6
13:08:11:  960MHz  0.18   8%   7%   1%   0%   0%   0% 37.5°C 27.6°C   4.89V  0/6
13:08:17:  960MHz  0.16   6%   6%   0%   0%   0%   0% 37.5°C 28.2°C   4.89V  0/6
# usb hub disconnected
13:08:23:  960MHz  0.29   8%   7%   0%   0%   0%   0% 38.0°C 27.9°C   4.93V  0/6
13:08:29:  528MHz  0.27   6%   6%   0%   0%   0%   0% 38.0°C 27.6°C   4.94V  0/6
13:08:34:  960MHz  0.25   6%   6%   0%   0%   0%   0% 37.9°C 27.6°C   4.94V  0/6
# usb hub connected again
13:08:40:  960MHz  0.31  12%  10%   1%   0%   0%   0% 38.2°C 28.6°C   4.89V  0/6
13:08:46:  960MHz  0.28   6%   6%   0%   0%   0%   0% 37.7°C 28.7°C   4.87V  0/6
13:08:52:  528MHz  0.26   7%   6%   0%   0%   0%   0% 37.7°C 28.6°C   4.87V  0/6

 

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45 minutes ago, 123martin said:

Here you go

 

Thank you, that looks ok (well, I was asking for a reason: when I started with Bananas few years ago being absolutely clueless and not knowing how badly they are designed with Micro USB as power source I managed to poweroff my Banana Pi simply by connecting my Apple keyboard with optical mouse connected to the keyboard's internal USB hub -- the consumption peak led to a brownout every time).

 

So next step for you is to diagnose what's going on, maybe the 'watch + dmesg' recipe over there helps with this...

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2 hours ago, tkaiser said:

that looks ok

Not to me. USB hub by itself is a very light load but it results in a measurable voltage drop on DC IN. And I have a couple of USB hubs that can reboot a microUSB powered RPi if you connect them - most likely because of a filtering capacitor on the input causing a large enough current spike.

TonyMac32, tkaiser and Naguissa like this

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3 hours ago, tkaiser said:

 

Thank you, that looks ok (well, I was asking for a reason: when I started with Bananas few years ago being absolutely clueless and not knowing how badly they are designed with Micro USB as power source I managed to poweroff my Banana Pi simply by connecting my Apple keyboard with optical mouse connected to the keyboard's internal USB hub -- the consumption peak led to a brownout every time).

 

So next step for you is to diagnose what's going on, maybe the 'watch + dmesg' recipe over there helps with this...

 

I have done some more tests (wondering why it seems to poweroff just by showing the login screen):

 

The HDMI to VGA adapter in combination with the usb hub is causing the power loss. If only one is connected everything is doing fine. I have not had this behaviour when using Bananian. Is there anything I can try or adjust?

 

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8 minutes ago, 123martin said:

The HDMI to VGA adapter in combination with the usb hub is causing the power loss. If only one is connected everything is doing fine. I have not had this behaviour when using Bananian. Is there anything I can try or adjust?

 

Sure, fix your underpowering problems. I also hope a moderator has splitted the relevant posts here and merges/creates them into just another new thread over at https://forum.armbian.com/forum/31-sd-card-and-power-supply/

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