Randoms reboot NanoPi M4V2


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21 minutes ago, Igor said:


5V powering via USB-C is on the edge (especially for hungry hw) if it comes via official or unofficial power adapter / cable.

mmm perhaps the cable is the problem... how could I check it? Also I'm using a an adapter to fit from Asia to Europe :)

 

Anyway, is there any other alternatives you can recommend me?

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The cable made something different, since the board was up almost 1.5 days, but it was rebooted again. 

 

@Werner I'm very noob, can you explain how can I power it up from GPIO?  or which other PSU could work? I read in the internet some guys are using Raspberry's Pi 4 PSU, but reading the specs, are lower than the official from friendelec.

 

Many thanks.

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I've done a lot of tests with the M4V2 and powering and even at 4V it stayed stable. I've never had a crash running the legacy kernel. 
Best thing to check voltage is to use a usb voltage meter in the USB ports of the SBC. Also at the input and see if the difference is big. Using good cables is necessary. Even most USB-C cables are not made for power. This SBC can use up to 2A, most cheap USB cables can't handle that. 
A Raspberry Pi crashes quickly, and is very unstable with even 4.9V. But not the M4V2.

What is connected to it? Maybe a USB over voltage? You could also try a legacy kernel image to see if it's a kernel issue. Also using uart connected to another device you'd probably be able to see what went wrong. 

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Thanks all for the messages, I've tried with another one, 6.5V, and it's the same, it was rebooted 3.5hours ago. I don't know if it could be a kernel problem, I'm using also a M4V1 with SATA hat, and kernel 5 and works flawless (Up time:       27 days 1:15), so I think it is related to the PSU/cable...

My main problem here is I'm not good with electric stuff, meters etc, I have an standard meter, but I don't know even how to use it :(

 

Sorry for asking @NicoD with the usb meter, should be plug and see? :D if so, I think even I could make it.

 

I'm going to look for a good usb cable... 

 

Thanks.

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10 minutes ago, i5Js said:

Well, the cable is not the problem, the board rebooted 36 mins ago.... so frustrating.

 

I used to have a lot of hangs with older mainline kernels. Since I am on the latest everything is running smoothly for me. You could try the latest kernel. You can't download this kernel from the website. You can download this kernel through armbian-config.

 

Armbian 21.02.2 Buster with Linux 5.10.16-rockchip64

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6 hours ago, i5Js said:

Updated to the latest... let's see.

If it fails which I think it will... Can you try this image? https://users.armbian.com/piter75/Armbian_21.05.0-trunk_Nanopim4v2_buster_current_5.10.18_minimal-stability-fix.img.xz

It contains a fix/workaround to dvfs issues I found and makes all of my M4V2 units running stable. Tested with hours of memtester running without failures. It failed pretty quick without the fix.

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Hello,

 

I recently got a Nanopi M4v2 on which I installed Armbian Buster current and updated the system, including kernel.

 

After a few hours the board would crash, requiring a power cycle.

 

Aftet reading this thread I decided to try a fixed frequency, so I left it at 2GHz. With a fixed clockspeed I ran stress tests, several runs of sbc-bench, browser benchmarks,  used it to open documents in Libreoffice, watched videos using the browser, etc. and it was totally stable for over 5 days straight.

 

I only had problems with Chromium crashing, but Firefox (or equivalent) worked fine.

 

I changed the max and min clocks to defaults and it locked up about 4 hours later.

 

The board was working headlessly and I accessed it remotely using xrdp or dwservice.net.

 

I don't have it connected to UART at the moment because I don't have another computer nearby to connect it to where the board is placed, but if it helps I can find a way to connect it and give you the output.

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6 hours ago, Lennyz1988 said:

:beer::beer::beer::beer::beer::beer::beer:

 

Just to confirm you are on this kernel right? Linux 5.10.16-rockchip64

 

Yes!

 

Welcome to Armbian 21.02.2 Focal with Linux 5.10.16-rockchip64

 

System load: 10%           Up time:       1 day 23:13

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  • Solution

@i5Js you can download these packages and install them with apt/dpkg: https://users.armbian.com/piter75/nanopim4v2-stability-fix/

You need both of them for the fix.

 

When they are correctly installed and the board is rebooted you should see this message in your dmesg:

piter@nanopim4v2-4:~$ dmesg | grep rk808-regulator.*buck
[    2.840331] rk808-regulator rk808-regulator: max buck steps per change: 4

The last "4" means you have the fix. No message or "8" means you don't have a fix.

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