[bad CRC - root-partition mounted ro - cubietruck A20]

Hi Igor and everyone else who is supporting this forum with their time and effort. Thanks in advance for reading this and giving it a thought!

 

• Question:

Any idea where I could turn off mounting /dev/sda1 read only?

• Problem description:

Before moving cubietruck to a new location I did an dist-upgrade, after that a reboot didn't work. First I was asked for debug and root password. After editing

I did try to solve my problems without using your help. But I did not succeed yet. Neither with installing a new image and restoring my lamp-stack from backup nor with solutions I found in this forum (changing u-boot config and so on). I did backup sd-card(16GB) and ssd(112GB) with rsync -aAhHXv to an external ext4 backup-harddrive, right after my cubietruck stopped booting.

with

sudo mount -o remount,rw /dev/sda1 / 

I can remount rw and start apache2, which doesn't start if /dev/sda1 ist mounted read only (ro) and prints an error AH000015, because it obviously can't write into in /var/log/apache2.

So my 1st goal is to mount /dev/sda1 rw. I already deleted remount on error ro in fstab, but that didn't help.

My problem seems to be, that even though sd-card and ssd came through an external test on another Ubuntu-PC

sudo fsck.ext4 -v -f -c /dev/sdx1

without problems, my cubietruck boots only readonly. https://pastebin.com/2p3udhMu, https://pastebin.com/fJfH3Pce

• armbianmonitor -u

https://pastebin.com/gdwdtU9k

• "Bad CRC" on system start

This is the 1st error-message I see. It could be the source of my problems. How should I remove it?

• dmesg --level=err,warn|less

https://pastebin.com/HaAJ73NT

• uname -a

Linux cubietruchostname 4.11.6-sunxi #6 SMP Fri Jun 23 19:56:18 CEST 2017 armv7l armv7l armv7l GNU/Linux

 

• boot

https://pastebin.com/5b4zBe26

/boot# less armbianEnv.txt
verbosity=7
console=both
disp_mode=1920x1080p60
rootdev=UUID=9e95b6ee-7600-4b79-8c96-4ba27d15e063
rootfstype=

• lmgtfy websearch - connected postings

 

 

 

[upgrade cubietruck from 14.04.5 LTS(4.8.4-sunxi) to 16.04.1 LTS(4.9.7-sunxi)]

Thank you for reading this:

 

• Mission:

upgrade a remote cubietruck without bricking it over ssh from WAN.

 

• Question

Is there some kind of tutorial on how to upgrade from 14.04 LTS to 16.04 LTS?

I didn't find it yet. By the way the desktop version is quite stable. Great job!

 

• Question2

What I am looking for though is, how do I remove the x-server? I thought I could

use the raspberry pi teamviewer version, but that didn't work out due to some

protocol problem. Therefor I could use all the RAM for docker/apache/mariadb

Thank you!

 

With kind regards

 

Hans

[[solved] cubietruck - no next image works - CRC =>pxeboot]

Thanks again Igor, this time for your fast reply. Etcher installed in Ubuntu didn't show the SD card. Trying to use etcher using a virtualized win7 hangs at >>starting...<<

Next approach:

change of computers. Now I am using:

----------
 OS: Ubuntu 16.04.1 LTS x86_64
 Model: 23923RG ThinkPad T530
 Kernel: 4.4.0-62-generic
 Uptime: 22 minutes
 Packages: 4308
 Shell: bash 4.3.46
 Resolution: 1600x900
 DE: Xfce
 WM: Xfwm4
 WM Theme: Default
 Theme: Raleigh [GTK2], Breeze [GTK3]
 Icons: Elementary-xfce-dark [GTK2], Breeze [GTK3]
 Terminal: x-terminal-emul
 CPU: Intel i5-3210M (4) @ 3.1GHz
 GPU: Intel Integrated Graphics
 GPU: NVIDIA NVS 5400M
 Memory: 3149MiB / 15772MiB

 

with a built in sd card reader...

It seems to work now... I'll keep you posted

Armbian_5.25_Cubietruck_Ubuntu_xenial_next_4.9.7_desktop.img works

Is there a changelog to what I am missing not using the compiled versions?

 

Thank you!

[[solved] cubietruck - no next image works - CRC =>pxeboot]

Hi all, special thanks to Igor for his work and all who are involved,

thank you for reading this,

 

• THE MISSION:

I am trying to install Armbian 5.25 Cubietruck Ubuntu xenial onto a cubietruck v1.0-0606.

 

• THE SITUATION:

My computer I am creating the SD-Card from is:

 

 

OS: Ubuntu 16.04.1 LTS x86_64
Model: 3484JBG ThinkCentre Edge72
Kernel: 4.4.0-62-generic
Uptime: 2 days, 1 hour, 11 mins
Packages: 3307
Shell: bash 4.3.46
Resolution: 1920x1080, 1920x1080
DE: KDE
WM: KWin
Theme: Breeze
Icons: Emoticonsoxygen
Terminal: konsole
Terminal Font: Monospace 14
CPU: Intel i5-3470S (4) @ 3.6GHz
GPU: Intel Ivybridge Desktop
Memory: 4199MiB / 7807Mi

 

First I tried to copy

Armbian_5.25_Cubietruck_Ubuntu_xenial_next_4.9.7_desktop.img

then I copied

root root 2946498560 Feb  5 12:04 Armbian_5.25_Cubietruck_Ubuntu_xenial_dev_4.10.0_desktop.img
root root 2942304256 Feb  5 02:43 Armbian_5.25_Cubietruck_Ubuntu_xenial_next_4.9.8_desktop.img

 

sudo dd bs=1M if=Armbian_5.25_Cubietruck_Ubuntu_xenial_dev_4.10.0_desktop.img of=/dev/sde

sync

 

My cardreader is a

Bus 002 Device 009: ID 058f:6362 Alcor Micro Corp. Flash Card Reader/Writer

 

My SD-Card is a

micro SD-Card SanDisk Ultra 16GB with an SD-Card-Adapter

 

• THE OBSTACLE

The message I get is:

*** Warning - bad CRC, using default environment

 

Then the cubitruck tries to boot from pxe.

 

• THANKS

 

What am I doing wrong. Thank you for your input!

 

with kind regards

 

Hans