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  1. I've got an m4v2 running current armbian (Armbian_19.11.4_Nanopim4_bionic_legacy_4.4.192_desktop.7z) I get a stack of messages on tty1 and in dmesg stating "get wrong frequency". it was also logging via syslog, but I have disabled those from logging. it also seems to generate one of these messages every time I hit a key on the keyboard. somehow related to kbd interrupt? ondemand cpu freq scaling works, running cpu intensive jobs, the following frequencies were observed Jan 11 10:45:01 m4-2 root: CPUTEMP 45.00 (600.00/600.00) Jan 11 21:50:01 m4-2 root: CPUTEMP 44.44 (1416.00/600.00) Jan 11 21:55:01 m4-2 root: CPUTEMP 45.62 (1416.00/600.00) Jan 11 22:00:02 m4-2 root: CPUTEMP 58.33 (1416.00/1800.00) Jan 11 22:05:01 m4-2 root: CPUTEMP 47.50 (600.00/1800.00) Jan 11 22:10:01 m4-2 root: CPUTEMP 46.25 (1416.00/600.00) Jan 11 22:15:01 m4-2 root: CPUTEMP 60.62 (1416.00/1800.00) Jan 11 22:20:01 m4-2 root: CPUTEMP 64.38 (1416.00/1800.00) [ 7.156821] rockchip-dmc dmc: Get wrong frequency, Request 528000000, Current 856000000 [ 7.215030] rockchip-dmc dmc: Get wrong frequency, Request 528000000, Current 856000000 [ 7.266670] rockchip-dmc dmc: Get wrong frequency, Request 800000000, Current 856000000 [ 7.268762] rockchip-dmc dmc: Get wrong frequency, Request 528000000, Current 856000000 [ 7.320885] rockchip-dmc dmc: Get wrong frequency, Request 528000000, Current 856000000 [ 7.373161] rockchip-dmc dmc: Get wrong frequency, Request 400000000, Current 856000000 [ 7.424889] rockchip-dmc dmc: Get wrong frequency, Request 400000000, Current 856000000 [ 180.539062] rockchip-dmc dmc: Get wrong frequency, Request 800000000, Current 856000000 [ 180.570767] rockchip-dmc dmc: Get wrong frequency, Request 800000000, Current 856000000 [ 180.676165] rockchip-dmc dmc: Get wrong frequency, Request 800000000, Current 856000000
  2. Hi guys , I installed the Buster WIP image on my M4 V2 and it appeared to be functioning ok wifi,USB etc all working until this morning. It wouldn't boot so I connected a serial cable and saw where it failed ( I think it part of the uboot process) ERROR: Did not find a cmdline Flattened Device Tree Any ideas why this should suddenly happen ? I have two V2's running this build and the other is still working fine
  3. Hi All, here is a quick howto for flashing a Nanopi M4 V2 I did this using a Linux box and a USB TTL serial cable) 1) Download an image from https://www.armbian.com/nanopi-m4-v2/ 2) Start a terminal 3) cd to the folder containing your download 4) Unzip your download to extract the *.img file 5) Connect an sdcard or eMMC to your pc ( I used a transcend adapter ) 6) Run lsblk to identify your device, in my case it returned /dev/sdc 7) Run mount to ensure it is not mounted and unmount it if necessary ( umount /dev/sdc or umount /dev/sdc1 ) 8) Run dd if =NameOfYourImage.img of=/dev/sdc status=progress 9) When completed ( it takes a while ) make a directory to enable you to mount your device ( mkdir /mnt/MyDevice) 10) Run mount /dev/sdc1 /mnt/MyDevice 11) nano /mnt/MyDevice/etc/NetworkManager/NetworkManager.conf 12) Add these two lines and save the file [device] wifi.scan-rand-mac-address=no 13) Unmount the device (umount /mnt/MyDevice) 14) Put the device( sdcard or eMMC ) in the M4 - DO NOT APPLY POWER YET ! 15) Connect a serial cable to the UART pins on the board and attach the other end to a USB port on your PC 16) Issue this command picocom -b 1500000 /dev/ttyUSB0 ( I'm typing this at work but I think this is correct ) this should connect you to the M4 17) Apply power to the M4 and you should see the boot output 18) Login as root with password 1234 ( you'll be prompted to change the password ) 19) Run armbian-config to configure wifi 20) Ensure you have an ip address ( ip a ) and look for wlan0 21) Reboot the M4 having removed the serial cable first. In my case It all worked - your case may be different.
  4. Hi all, I'm a bit out of date with regards to a working image for the NanoPi M4 v2 board. I have @pask image which works great but having to boot from the sd card and flash a bootloader patch to eMMC card whenever you reinstall ( I constantly break installs by over experimenting with stuff I don't know enough about ) is a bit of a pain. Anyone know of an image I can just download and flash ?
  5. Hi all, is it ok to run apt update and apt upgrade on @pask M4 v2 image - just thinking something might alter the bootloader
  6. pkfox

    M4 V2

    As the other thread is getting a bit cluttered I thought I'd start a new one. Thanks to the good work of @pask and others we now have a working image for the M4 v2. However, despite following instructions to the letter. I can't get the board to boot from the eMMC card, in fact I don't think the board even recognizes the card ( I've tried different ones ) Also not being able to connect via a serial cable is hampering my attempts at debugging the boot process. Cany anyone put up a Muppets guide on the steps required to achieve this ?
  7. pkfox

    M4 v2 image

    Hi guys, can anyone give me a link as to where I can download a working image for the new Nanopim4 v2 - the friendly arm download section is very confusing - it states there is an eMMC image but when I downloaded it it didn't contain a *.img file that I could flash but a lot of other *.gz *.img files e.g. boot.img etc etc
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