beatsal
Posts: 185
Joined: Tue Mar 21, 2017 2:46 pm

PI Strange behaviour

Sun Oct 15, 2017 3:42 pm

My PI was working fine and then started acting funny - first the mouse was unresponsive, then I turned off power when I turned on power, got a dark screen which said HDMI and then started scrolling saying:
1653741 Task Dump for CPU3
2186511 kworker/U8:2 D 0 92 0 0x00000000.
(The numbers on the left keep changing - maybe time). This scrolling carries on non-stop)

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DougieLawson
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Re: PI Strange behaviour

Sun Oct 15, 2017 6:35 pm

Get a new, factory fresh, SDCard and a USB SDCard reader.

Build a copy of Raspbian on the new SDCard. Boot your RPi from that. Mount your unbootable SDCard in the USB reader, mount the reader in your RPi.

You can then look at /var/log on the "broken" SDCard to see if you can determine what's gone wrong. You can rescue valuable data from that card, if necessary. You should then have a reasonable clue what's gone wrong.
Criticising any questions is banned on this forum.

Any DMs sent on Twitter will be answered next month.
All fake doctors are on my foes list.

Note: Any requirement to use a crystal ball or mind reading will result in me ignoring your question.

beatsal
Posts: 185
Joined: Tue Mar 21, 2017 2:46 pm

Re: PI Strange behaviour

Sun Oct 15, 2017 6:48 pm

Thanks Dougie.
Today Sunday all closed; but do not want to wait till tomorrow (MAY HAVE TO EVENTUALLY).
I get the msg "Fixing recursive fault but reboot is needed!"
Not sure how to reboot. Would like to reboot and see.

beatsal
Posts: 185
Joined: Tue Mar 21, 2017 2:46 pm

Re: PI Strange behaviour

Sat Oct 21, 2017 6:14 pm

Not done this before so do not understand:
``Get a new, factory fresh, SDCard and a USB SDCard reader.

Build a copy of Raspbian on the new SDCard. Boot your RPi from that. Mount your unbootable SDCard in the USB reader, mount the reader in your RPi.``

Since there are different types of SD card, which card should I get. I think a micro SD card but may be there are other factors i.e. speed, capacity etc. Put the SD card in my laptop and program or in the PI and program. What is the link to d`load from.
Thanks for your patience
Last edited by beatsal on Sat Oct 21, 2017 6:26 pm, edited 1 time in total.

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B.Goode
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Location: UK

Re: PI Strange behaviour

Sat Oct 21, 2017 6:24 pm

See the section Get Started on this page on the Raspberry Pi Foundation documentation website: https://www.raspberrypi.org/help/

beatsal
Posts: 185
Joined: Tue Mar 21, 2017 2:46 pm

Re: PI Strange behaviour

Sun Oct 22, 2017 1:03 am

Thanks. Tried it. Does not give specs of SD card req`d. Also tried extracting the raspbian-stretch.img file but it does not say where it is extracted - tried to find extracted file for an hour hour but still stuck

gkaiseril
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Location: Chicago, IL

Re: PI Strange behaviour

Sun Oct 22, 2017 1:12 am

Look at using etcher. You do not need to unzip the download.
f u cn rd ths, u cn gt a gd jb n cmptr prgrmmng.

beatsal
Posts: 185
Joined: Tue Mar 21, 2017 2:46 pm

Re: PI Strange behaviour

Sun Oct 22, 2017 1:25 am

I d`load the zip file 2017-09-07-raspbian-stretch.img and when I extract and open, it says file corrupted.
Is there any link I can d`load from without these problems. What is etcher and how would it help

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rpdom
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Location: Chelmsford, Essex, UK

Re: PI Strange behaviour

Sun Oct 22, 2017 4:38 am

Etcher is the recommended software to write the Raspbian image file to an SD card. It works on Windows, Mac and Linux on a PC. https://etcher.io
It will decompress and write the image in one operation and verify that it is written correctly.

Did you check the md5 checksum of the zipped file after you downloaded it?

steveb4pi
Posts: 62
Joined: Sun Aug 11, 2013 6:12 pm

Re: PI Strange behaviour

Sun Oct 22, 2017 7:35 am

These days, a corrupted SD card is actually quite rare .. unless your app. is performing millions of write operations on the SD card that is

SD cards have a 'write lifetime limit' yes, that's millions of writes, but with 'modern' Pi system software using the Windows trick of 'virtual memory' it's amazing how fast a SD card can be 'worn out' ...

NB. On a PC, Etcher (32bit) only works on Win 7 and above, which is why many of us still use Win32 Disk Imager
(what's the point of building a 32bit app. when it's limited to Win 7 ??? = you might as well make it 64bit only)

Since there are still more XP users (5.69%) than any flavour of Mac (OS X, 3.84%) or Linux (3.04%) I'm guessing the developers have 'bought into' the Microsoft story ...
( see https://www.netmarketshare.com/operatin ... pcustomd=0 )
Last edited by steveb4pi on Sun Oct 22, 2017 8:42 am, edited 1 time in total.

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rpdom
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Re: PI Strange behaviour

Sun Oct 22, 2017 7:55 am

steveb4pi wrote:
Sun Oct 22, 2017 7:35 am
On a PC, Etcher (32bit) only works on Win 7 and above (whats the point of a 32bit app. when it's limited to Win 7 ???),. which is why many of use still use Win32 Disk Imager.
Time to upgrade to a modern OS? :roll:

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DougieLawson
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Re: PI Strange behaviour

Sun Oct 22, 2017 2:50 pm

rpdom wrote:
Sun Oct 22, 2017 4:38 am
Did you check the md5 sha256 checksum of the zipped file after you downloaded it?
FTFY
Criticising any questions is banned on this forum.

Any DMs sent on Twitter will be answered next month.
All fake doctors are on my foes list.

Note: Any requirement to use a crystal ball or mind reading will result in me ignoring your question.

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rpdom
Posts: 17733
Joined: Sun May 06, 2012 5:17 am
Location: Chelmsford, Essex, UK

Re: PI Strange behaviour

Sun Oct 22, 2017 3:50 pm

DougieLawson wrote:
Sun Oct 22, 2017 2:50 pm
rpdom wrote:
Sun Oct 22, 2017 4:38 am
Did you check the md5 sha256 checksum of the zipped file after you downloaded it?
FTFY
Yeah, that one. I couldn't be bothered to check.

beatsal
Posts: 185
Joined: Tue Mar 21, 2017 2:46 pm

Re: PI Strange behaviour

Sat Oct 28, 2017 4:27 pm

Thanks, your suggestions worked. Got a micro SD and d'loaded using Etcher, now the PI starts up and I get the 2 white lines. Now, cannot connect from the desktop with VNC. My desktop IP is 192.168.0.11. I tried 192.168.0.12-----.16 no luck! How to get the IP address of PI so I can connect to it?

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B.Goode
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Location: UK

Re: PI Strange behaviour

Sat Oct 28, 2017 4:55 pm

I get the 2 white lines. Now, cannot connect from the desktop with VNC. My desktop IP is 192.168.0.11. I tried 192.168.0.12-----.16 no luck! How to get the IP address of PI so I can connect to it?



You mean the default Raspbian Desktop background image of a road going off into the distance?



From a shell (command-line) prompt, eg by using the Terminal [ >_ ] icon on the top menu bar, use

Code: Select all

ip addr
Or
ifconfig
If you don't have access to the Raspbian Desktop, examine the pool of addresses assigned by your router.

Or scan your network with a tool such as Fing on a pc or tablet on the same network.

beatsal
Posts: 185
Joined: Tue Mar 21, 2017 2:46 pm

Re: PI Strange behaviour

Sat Oct 28, 2017 5:50 pm

Thanks. Tried, when i type ip addr, i getsyntax error near unexpected token 'ip'
when i type ipconfig, i get bash: ipconfig: command not found
i did get the ip address as 192.168.0.10 from typing 192.168.0.1but when i type it in vnc, it does not connect

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rpdom
Posts: 17733
Joined: Sun May 06, 2012 5:17 am
Location: Chelmsford, Essex, UK

Re: PI Strange behaviour

Sat Oct 28, 2017 6:00 pm

beatsal wrote:
Sat Oct 28, 2017 5:50 pm
Thanks. Tried, when i type ip addr, i getsyntax error near unexpected token 'ip'
when i type ipconfig, i get bash: ipconfig: command not found
i did get the ip address as 192.168.0.10 from typing 192.168.0.1but when i type it in vnc, it does not connect
That's ifconfig not ipconfig. ipconfig is a Windows command.

beatsal
Posts: 185
Joined: Tue Mar 21, 2017 2:46 pm

Re: PI Strange behaviour

Sat Oct 28, 2017 6:13 pm

yes, it did give me 192.168.0.10 as the ip for my PI BUT WHEN i TYPE it in VNC, no luck does not connect, get error 'connection was refused by the computer'

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B.Goode
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Location: UK

Re: PI Strange behaviour

Sat Oct 28, 2017 6:23 pm

What steps have you taken to configure and enable vnc on your RPi?

Raspberry Pi Foundation documentation here: https://www.raspberrypi.org/documentati ... /README.md

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jahboater
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Joined: Wed Feb 04, 2015 6:38 pm
Location: Wonderful West Dorset

Re: PI Strange behaviour

Sat Oct 28, 2017 6:24 pm

beatsal wrote:
Sat Oct 28, 2017 6:13 pm
yes, it did give me 192.168.0.10 as the ip for my PI BUT WHEN i TYPE it in VNC, no luck does not connect, get error 'connection was refused by the computer'
Have you enabled VNC ?

sudo raspi-config

then "Interfacing Options"

beatsal
Posts: 185
Joined: Tue Mar 21, 2017 2:46 pm

Re: PI Strange behaviour

Sat Oct 28, 2017 7:06 pm

Thanks a lot - works now!

beatsal
Posts: 185
Joined: Tue Mar 21, 2017 2:46 pm

Re: PI Strange behaviour

Fri Dec 22, 2017 5:58 pm

gkaiseril wrote:
Sun Oct 22, 2017 1:12 am
Look at using etcher. You do not need to unzip the download.
You had mentioned the above i.e. no need to unzip.
The getting started section says to unzip. So not sure.

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jahboater
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Location: Wonderful West Dorset

Re: PI Strange behaviour

Fri Dec 22, 2017 6:54 pm

beatsal wrote:
Fri Dec 22, 2017 5:58 pm
gkaiseril wrote:
Sun Oct 22, 2017 1:12 am
Look at using etcher. You do not need to unzip the download.
You had mentioned the above i.e. no need to unzip.
The getting started section says to unzip. So not sure.
Please follow the instructions here
https://www.raspberrypi.org/documentati ... /README.md
They do not say to unzip ...
Etcher is a graphical SD card writing tool that works on Mac OS, Linux and Windows, and is the easiest option for most users. Etcher also supports writing images directly from the zip file, without any unzipping required. To write your image with Etcher:

beatsal
Posts: 185
Joined: Tue Mar 21, 2017 2:46 pm

Re: PI Strange behaviour

Fri Dec 22, 2017 9:26 pm

Thanks. Sorry for my misunderstanding.

beatsal
Posts: 185
Joined: Tue Mar 21, 2017 2:46 pm

Re: PI Strange behaviour

Fri Dec 22, 2017 9:53 pm

DougieLawson wrote:
Sun Oct 15, 2017 6:35 pm


Mount your unbootable SDCard in the USB reader, mount the reader in your RPi.
Not sure about USB reader as to where it is.

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