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About FredrikA

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    3d printing, model flight, SBC

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  1. For my board to originally boot, I needed the USB TTL serial. Please recall the speed is high, and a lot of letters are missing during boot, Don't let that worry you. just press enter a couple of times to get it to sync once dmesg boot gets scilent. After this once, It was possible to boot from sd card.
  2. After a couple of loggings from different starts mine always ends with [ 113.070097] rockchip-dmc dmc: Get wrong frequency, Request 856000000, Current 800000000 and on the 8:th try. Then it is happy. What kernel do you run? Justin Wills has solved it for another board here:
  3. Got some headless measurements of current. OK-DO (original Raspberry PI PSU supplier 5V, 3A). "Cabriolet" since my 3d printer got some problems, cannot build cabinet right now. Headless. Only an USB memory stick attached (and the SD-card). Idle 0.61A 7z -b on repeat 1.79A (did go up to 1.82A but I was too late for picture)
  4. So I am not sure I can answer, but I will give it a try I got a Orange 4B I do not have the error line from the X-server [ 116.359] (EE) open /dev/fb0: No such file or directory instead on mine I've got in the file system pi@orangepi4:/var/log$ ls -l /dev/fb0 crw-rw---- 1 root video 29, 0 May 4 12:17 /dev/fb0 also dmesg|grep rockchip-drm [ 2.448079] rockchip-drm display-subsystem: defer getting devfreq [ 2.448650] rockchip-drm display-subsystem: bound ff900000.vop (ops 0xffffff8008c63878) [ 2.448885] rockchip-drm display-subsystem:
  5. I am not sure. I get these messages in dmesg only (and /var/log/armbian-hardware-monitor.log) dmesg|grep rockchip-dmc [ 2.687760] rockchip-dmc dmc: unable to get devfreq-event device : dfi [ 3.541515] rockchip-dmc dmc: Looking up center-supply from device tree [ 3.541712] rockchip-dmc dmc: Failed to get leakage [ 3.541726] rockchip-dmc dmc: Looking up center-supply from device tree [ 3.541755] rockchip-dmc dmc: Failed to get pvtm [ 3.541882] rockchip-dmc dmc: avs=0 [ 3.541901] rockchip-dmc dmc: failed to get vop pn to msch rl [ 3.542023] rockchip-dm
  6. You can measure the power consumption and see if you are at risk. I can try to see if I can find my clamp ampere meter, I got it around somewhere, maybe I can make some measurement. If you are at risk, the processor cores draws a lot more when at high frequency, maybe you could implement a more restrictive throttling.
  7. I have no stability problem, since I got a cooling fan. I am using an OKDO usb-c power supply (the company that makes the PSU for raspberry pi). It has real 3A supply. I had it halt twice before Once because overheating Once because memory was exhausted when I tried to build tensorflow.
  8. I have updated to latest armbian And the built in wifi was still unstable After a while the link goes down and I get the following in dmesg 2767.152762] RTL8723BS: linked_status_chk(wlan0) disconnect or roaming It is annoying but no catastrophe. I run this bash script once every hour in crontab to restart wifi0 #!/bin/bash list=`ifconfig|grep 192|awk '{print $2}'` for l in $list; do #echo $list count=$(($count + 1)) done; #echo $count # if we got less than 2 interfaces, restart networking if [ $count -lt 2 ] ; then echo
  9. FredrikA


  10. I will answer my own question. After adding voltage debug to statistics I have concluded that regulator 10 is for the four ARM A53 and regulator 23 is for the two ARM A72. if anyone interested files here
  11. Thanks @Werner, I actually believed I got upgrades automatically. I have updated now by re-flashing the SD card and will supervise if wifi is stable. Seems Ok after a couple of hours, but previously it could take a day or two before the instability showed. (Now armbianmonitor -u at )
  12. My board works pretty well upto 1 000 00 Hz without fan and up to 1 200 000 Hz with (noctua) fan. However I am still using an usb wifi card, to be able to connect with ssh. Anyone having wifi with the built in wifi card work properly? Mine just shuts off. With an external wifi usb card, it works like a charm. Since my 3-d printers are in the living room I i have the orange pi:s in the living room. They are primary used for octoprint. I would like to have the built in wifi on orangepi prime to work.
  13. @IanHI am connected wireless (only), due to lacking ethernet in the living room. I still get some crashes on ethernet in dmesg. I am running: uname -a Linux orangepi4 4.4.213-rk3399 #15 SMP Thu Mar 19 21:33:44 CET 2020 aarch64 GNU/Linux (Armbian_20.02.5_Orangepi4_buster_legacy_4.4.213) I wonder if anyone knows how to get the Gyrfalcon Lightspeeur 2801S running in armbian? Also want to make the RPI monitor look nice, including core voltages, does anyone knows which voltage regulators go where? I found four regulators with suspected cpu voltages, but have no clue on how
  14. If you can start it you can stop it. when you start it keep a reference to the PID, then follow this guide