robRSD
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Pi OS reliability?

Mon Sep 26, 2016 10:20 am

I have a pi 3 model B. I'm new to Linux (Noobs Raspbian). I have experienced a lot of instability from the pi from the off. I'm on my 3rd os image in as many months, the os seems to repeatedly corrupt, I'm on my second SD card. As a typical example today I tried to launch and play a wmv file using omxplayer, I was struggling with a file not found error in the command line so attempted to open the web browser (the browser installed with NOOBS), the rotating circle appeared for a few moments then disappeared without launching the browser, I tried to sudo shutdown -h now but nothing happened, I then tried to shut down from the GUI the screen went black but shutdown did not complete (the screen I use will alert me if signal is lost/shutdown completes), so I'm forced to switch the unit off at the wall which I suspects leads to the corruption of the OS. It's getting incredibly frustrating, is this typical of a raspberry/Linux/Raspbian?

mattmiller
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Re: Pi OS reliability?

Mon Sep 26, 2016 10:28 am

Some of us have Pi that have been on continuously for months (I'll bet some claim years) :)

99.999999% of time its a dodgy power supply - the other 0.000001 is a dodgy SD card - the other 0.00000000000000000000000001 - its the OS or Pi itself :)

JMK8
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Re: Pi OS reliability?

Mon Sep 26, 2016 11:51 am

I had a pair of Pi's running for over 8 months continuously without reboot until the bad storms last week which took out both along with my router, a network switch and a USB hub :cry:

Both Pi's boot but the LAN is dead on both.

We had a nearby lighting strike which I guess was the culprit.

robRSD
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Re: Pi OS reliability?

Mon Sep 26, 2016 1:11 pm

Faulty power supply, do you mean the actual plug/transformer unit? Seems unlikely this would cause the command line/browser to crash or could it?
Has anyone experienced similar unreliable symptoms as me, and were you able to find the cause of the problem?

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joan
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Re: Pi OS reliability?

Mon Sep 26, 2016 1:14 pm

The Pi (like all computers) will crash if it doesn't get sufficient power.

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Burngate
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Re: Pi OS reliability?

Mon Sep 26, 2016 3:38 pm

robRSD wrote:Faulty power supply, do you mean the actual plug/transformer unit?
More likely it's not designed to give the current the Pi's wanting. Even more likely is the cable from the supply to the Pi is poor quality.

jahboater
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Re: Pi OS reliability?

Mon Sep 26, 2016 6:01 pm

robRSD wrote:Faulty power supply, do you mean the actual plug/transformer unit? Seems unlikely this would cause the command line/browser to crash or could it?
Has anyone experienced similar unreliable symptoms as me, and were you able to find the cause of the problem?
Get the "official" Pi3 PSU, its very cheap and yet it is high quality and has a thick cable.

http://cpc.farnell.com/stontronics/t587 ... dp/SC14025

Spec:
http://www.farnell.com/datasheets/2020825.pdf

mattmiller
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Re: Pi OS reliability?

Mon Sep 26, 2016 11:03 pm

Faulty power supply, do you mean the actual plug/transformer unit? Seems unlikely this would cause the command line/browser to crash or could it?
Has anyone experienced similar unreliable symptoms as me, and were you able to find the cause of the problem?
Lots of people have had lots of problems with power supplies/power leads unable to support Pi. Especially the new Pi3 that draws a lot more current than previous models

Now it might not be your problem but its the number 1 likely cause

W. H. Heydt
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Re: Pi OS reliability?

Tue Sep 27, 2016 1:34 am

I don't know what the OP means by "reliable", but here are two data points. The first is the Pi I use for an alarm clock:
18:29:56 up 62 days, 20:52, 3 users, load average: 0.13, 0.11, 0.13
The second is my grandson's Pi that he play MinecraftPi and does Scratch on, plus so web browsing:
18:32:00 up 45 days, 8:56, 3 users, load average: 0.34, 0.25, 0.25

Each gets rebooted for various reasons from time to time, so no uptime records, but the reboots aren't because of OS failures.

As for some of the other remarks...I'm pretty picky about power supplies. Not only are both Pis using good quality PSUs, but they each have a UPS upstream, so the AC side of the PSUs is clean.

robRSD
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Re: Pi OS reliability?

Tue Sep 27, 2016 8:12 am

I'm using an official Stontronics power supply, output +5.1v. Are problems usually associated with third party supplies or are the Stontronic ones temperamental?

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RaTTuS
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Re: Pi OS reliability?

Tue Sep 27, 2016 8:32 am

W. H. Heydt wrote:,...
Each gets rebooted for various reasons from time to time, so no uptime records, but the reboots aren't because of OS failures....
sudo apt-get update && sudo apt-get install uptimed

uprecords

Code: Select all

 uprecords
     #               Uptime | System                                     Boot up
----------------------------+---------------------------------------------------
     1   335 days, 17:46:09 | Linux 3.18.7+             Tue Mar 31 17:05:46 2015
->   2   209 days, 22:36:50 | Linux 4.1.13+             Tue Mar  1 09:54:39 2016
     3   130 days, 15:49:43 | Linux 3.6.11+             Wed Dec 18 19:52:36 2013
     4   112 days, 08:14:35 | Linux 3.6.11+             Wed Aug 28 12:33:35 2013
     5    91 days, 05:20:26 | Linux 3.12.24+            Mon Jul 21 10:54:30 2014
     6    77 days, 00:36:37 | Linux 3.12.24+            Mon Oct 20 16:15:16 2014
     7    71 days, 22:59:51 | Linux 3.6.11+             Tue Mar 12 08:37:44 2013
     8    69 days, 20:43:58 | Linux 3.12.35+            Mon Jan  5 15:52:24 2015
     9    43 days, 23:35:53 | Linux 3.10.25+            Mon Apr 28 12:44:21 2014
    10    39 days, 21:42:05 | Linux 3.12.20+            Wed Jun 11 12:20:40 2014
----------------------------+---------------------------------------------------
no1 in   125 days, 19:09:20 | at                        Tue Jan 31 03:40:47 2017
    up   1510 days, 15:54:5 | since                     Tue Jul 17 12:46:07 2012
  down    22 days, 04:50:28 | since                     Tue Jul 17 12:46:07 2012
   %up               98.552 | since                     Tue Jul 17 12:46:07 2012
there are other ways it could crash - but what OP is your PSU and what have you get plugged in ?
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mfa298
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Re: Pi OS reliability?

Tue Sep 27, 2016 1:37 pm

robRSD wrote:I'm using an official Stontronics power supply, output +5.1v. Are problems usually associated with third party supplies or are the Stontronic ones temperamental?
I've not had issues with the Official Pi PSU, although you may have issues if you plug too much into the Pi that's also trying to draw too much power (but you'll likely have issues with any PSU if that's the case). One clue as to there being power problems is the red power led blinking off.

For one of my Pi3s

Code: Select all

 13:24:44 up 77 days, 20:48,  1 user,  load average: 0.00, 0.00, 0.00
And that was probably rebooted to put a case on it.

Looking at a Pi1 (early 256MB model with no mounting holes)

Code: Select all

 13:31:43 up 177 days, 16:45,  1 user,  load average: 0.00, 0.01, 0.05
and I think that was rebooted to change the strip it plugged into over.

The issue I have had on some Pis (mainly on Pi1s) is poor quality SD cards. I think the only reason I've not had issues on the Pi2s/Pi3s is I'd already learnt that lesson so only use SD cards I trust (Sandisk Ultra in the case of the Pi2/Pi3 in my case - others like some of the Samsung cards).

robRSD
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Re: Pi OS reliability?

Tue Sep 27, 2016 4:03 pm

I've used 2 sd cards to date, both SanDisk, standard and ultra. I have tried update/upgrade on several occasions but that didn't help. I'll keep an eye on the power light while using. The only peripherals I have plugged in are the mouse and keyboard. It's an older Mac keyboard, I'll try a pc keyboard, and post results if it improves reliability.

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RaTTuS
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Re: Pi OS reliability?

Wed Sep 28, 2016 6:36 am

what PSU - post a link to it - what is its rating mA wise ?
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Burngate
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Re: Pi OS reliability?

Wed Sep 28, 2016 9:14 am

RaTTuS wrote:what PSU - post a link to it - what is its rating mA wise ?
He's already said -
I'm using an official Stontronics power supply, output +5.1v.
Which is why I haven't made any more contributions to this thread - unless it really is faulty, the supply isn't the problem.

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MattHawkinsUK
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Re: Pi OS reliability?

Wed Sep 28, 2016 11:33 am

Where did you get the SD cards? Format them with the official SD Formatter application from https://www.sdcard.org/downloads/formatter_4/.

I've never had much luck with NOOBS. Download the new Raspbian image and re-write the SD cards with that. I either user win32diskimager or Etcher.
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