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my pc is shutdown unexpectedly

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  my pc is shutdown unexpectedly Long Wind <longwind2@yahoo.com> - 2020-09-10 06:50 +0200
    Re: my pc is shutdown unexpectedly Long Wind <longwind2@yahoo.com> - 2020-09-10 07:00 +0200
      Re: my pc is shutdown unexpectedly Felix Miata <mrmazda@earthlink.net> - 2020-09-10 07:30 +0200
        Re: my pc is shutdown unexpectedly Long Wind <longwind2@yahoo.com> - 2020-09-10 11:20 +0200
          Re: my pc is shutdown unexpectedly Marco Möller <talby@debianlists.mobilxpress.net> - 2020-09-10 12:10 +0200
            Re: my pc is shutdown unexpectedly Long Wind <longwind2@yahoo.com> - 2020-09-10 14:00 +0200
            Re: my pc is shutdown unexpectedly Michael Stone <mstone@debian.org> - 2020-09-10 14:10 +0200
              Re: my pc is shutdown unexpectedly Long Wind <longwind2@yahoo.com> - 2020-09-10 14:20 +0200
                Re: my pc is shutdown unexpectedly Michael Stone <mstone@debian.org> - 2020-09-10 14:50 +0200
      Re: my pc is shutdown unexpectedly Long Wind <longwind2@yahoo.com> - 2020-09-10 14:40 +0200
        Re: my pc is shutdown unexpectedly Michael Stone <mstone@debian.org> - 2020-09-10 14:50 +0200

#226843 — my pc is shutdown unexpectedly

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it's running busterwhich file in /var/log shall i check?most likely it's hardware fault

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#226844

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possible cause : cpu too hot?
Sep 10 00:00:54 debian kernel: [ 9858.515989] CPU0: Core temperature/speed normal
Sep 10 00:15:46 debian kernel: [10751.125312] CPU0: Core temperature/speed normal
Sep 10 00:20:50 debian kernel: [11054.410233] CPU0: Core temperature above threshold, cpu clock throttled (total events = 395)
Sep 10 00:20:50 debian kernel: [11054.459999] CPU0: Core temperature/speed normal
Sep 10 00:25:59 debian kernel: [11364.057595] CPU0: Core temperature above threshold, cpu clock throttled (total events = 494)
Sep 10 00:26:00 debian kernel: [11364.837948] perf: interrupt took too long (10314 > 10277), lowering kernel.perf_event_max_sample_rate to 19250
Sep 10 00:39:08 debian kernel: [    0.000000] Linux version 4.19.0-10-686 (debian-kernel@lists.debian.org) (gcc version 8.3.0 (Debian 8.3.0-6)) #1 SMP Debian 4.19.132-1 (2020-07-24)
Sep 10 00:39:08 debian kernel: [    0.000000] x86/fpu: x87 FPU will use FXSAVE
Sep 10 00:39:08 debian kernel: [    0.000000] BIOS-provided physical RAM map:
Sep 10 00:39:08 debian kernel: [    0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009efff] usable
S

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#226845

Long Wind composed on 2020-09-10 04:52 (UTC):

> possible cause : cpu too hot?
> Sep 10 00:00:54 debian kernel: [ 9858.515989] CPU0: Core temperature/speed normal
> Sep 10 00:15:46 debian kernel: [10751.125312] CPU0: Core temperature/speed normal
> Sep 10 00:20:50 debian kernel: [11054.410233] CPU0: Core temperature above threshold, cpu clock throttled (total events = 395)
> Sep 10 00:20:50 debian kernel: [11054.459999] CPU0: Core temperature/speed normal
> Sep 10 00:25:59 debian kernel: [11364.057595] CPU0: Core temperature above threshold, cpu clock throttled (total events = 494)
> Sep 10 00:26:00 debian kernel: [11364.837948] perf: interrupt took too long (10314 > 10277), lowering kernel.perf_event_max_sample_rate to 19250

Have you cleaned the inside of the PC? Is dust clogging cooling fins or fans or
case vents? Are fans spinning? PSUs can overheat and cause breakdown as well.
-- 
Evolution as taught in public schools, like religion,
	is based on faith, not on science.

 Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!

Felix Miata  ***  http://fm.no-ip.com/

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#226852

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    On Thursday, September 10, 2020, 1:22:36 AM EDT, Felix Miata <mrmazda@earthlink.net> wrote: 

Have you cleaned the inside of the PC? Is dust clogging cooling fins or fans or
case vents? Are fans spinning? PSUs can overheat and cause breakdown as well.

i don't have such skill as pc maintenance. i have removed heat sink but unable to install back. before that i have tested memory with memtest86+, it quickly shutdown. i think it's not memory's fault, if it is memtest86+ shall report error in red.

  

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#226853

On 10.09.20 11:16, Long Wind wrote:
> 
> 
> On Thursday, September 10, 2020, 1:22:36 AM EDT, Felix Miata 
> <mrmazda@earthlink.net> wrote:
> 
> 
> Have you cleaned the inside of the PC? Is dust clogging cooling fins or 
> fans or
> case vents? Are fans spinning? PSUs can overheat and cause breakdown as 
> well.
> 
> i don't have such skill as pc maintenance. i have removed heat sink but 
> unable to install back. before that i have tested memory with 
> memtest86+, it quickly shutdown. i think it's not memory's fault, if it 
> is memtest86+ shall report error in red.
> 

Of course your hardware needs all fans clean and also the thermal 
conduction between CPU and heat sink in proper shape (thermal paste not 
dry and still in good condition).

After you recently already have had difficult to explain problems with a 
hard disk, did you finally check the motherboard, RAM and CPU to still 
perform reliable, as recommended in the thread for your hard disk 
problem? You will remember, I recommended to confirm if your hardware 
runs stable under a high load for a long time. The test tools 
recommended to use are:
   RAM: memtest86+ (accessible as an boot option from rescue distros)
   CPU: stress-ng (package in the Debian repository)
   Motherboard: dd (package coreutils, should already be installed)

Good Luck! Marco.

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#226855

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    On Thursday, September 10, 2020, 6:03:45 AM EDT, Marco Möller <talby@debianlists.mobilxpress.net> wrote:  
 
Of course your hardware needs all fans clean and also the thermal 
conduction between CPU and heat sink in proper shape (thermal paste not 
dry and still in good condition).

After you recently already have had difficult to explain problems with a 
hard disk, did you finally check the motherboard, RAM and CPU to still 
perform reliable, as recommended in the thread for your hard disk 
problem? You will remember, I recommended to confirm if your hardware 
runs stable under a high load for a long time. The test tools 
recommended to use are:
  RAM: memtest86+ (accessible as an boot option from rescue distros)
  CPU: stress-ng (package in the Debian repository)
  Motherboard: dd (package coreutils, should already be installed)

Good Luck! Marco.

i've attempted linux installation on problem disk 3 times, both first and second failed, i don't remember what exactly happen, last weekend i removed problem disk to problem pc in this thread and installed fedora, it failed, now i realize failure isn't caused by problem disk. 

i have removed heat sink but can't install it. Thank Andrew, but i can't find someone to help me. i don't feel too sorry, these old hardware are cheap. for about 200 yuan i can buy case and everything in case from old pc dealer. it may include 4G memory, 160G disk, intel E6500 cpu and even S&H. one US dollar is about 7 yuan.
with old pc at low price i wonder if it's worthy to learn pc repair skill


  

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#226856

On Thu, Sep 10, 2020 at 12:03:22PM +0200, Marco Möller wrote:
>After you recently already have had difficult to explain problems with 
>a hard disk, 

there was never anything reported that sounded remotely like a hard disk 
problem.

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#226857

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    On Thursday, September 10, 2020, 8:03:16 AM EDT, Michael Stone <mstone@debian.org> wrote:  
 
 
there was never anything reported that sounded remotely like a hard disk 
problem.

3rd installation failure is probably not caused by  problem diskbut 1st and 2nd installation failure is 
the pc is stable, it can run linux, it never show any sign that i can't explain 


  

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#226859

On Thu, Sep 10, 2020 at 12:15:56PM +0000, Long Wind wrote:
>3rd installation failure is probably not caused by  problem disk
>but 1st and 2nd installation failure is

Almost certainly not. Turning off *is not* a symptom of a bad disk. You 
have at least a cooling issue, and who knows what other problems. Your 
symptoms correlate much better with that than with a hard drive problem.

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#226858

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 i've been warned  "Core temperature above threshold" for a long timei just ignore it.  probably it isn't cause of shutdownif it is, it can warn explicitly in /var/log that it will shutdownsurely it can beep before shutdown, but i didn't hear any beep

it shutdown unexpectedly, it means answer can't be found by studying /var/log??

  
 

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#226860

On Thu, Sep 10, 2020 at 12:36:21PM +0000, Long Wind wrote:
>i've been warned  "Core temperature above threshold" for a long time
>i just ignore it.  probably it isn't cause of shutdown
>if it is, it can warn explicitly in /var/log that it will shutdown
>surely it can beep before shutdown, but i didn't hear any beep

The system can turn itself off regardless of the OS, and that is 
something that systems do if they overheat. 

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