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Perfect Gentleman
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Joined: 18 May 2014
Posts: 808

PostPosted: Tue Dec 22, 2015 9:54 am    Post subject: Reply with quote

7 hours of MemTest86 6.2 Free Edition - no errors.
Later try mprime.
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krinn
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Joined: 02 May 2003
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PostPosted: Tue Dec 22, 2015 10:35 am    Post subject: Re: Computer freezes randomly. Reply with quote

Everybody goes into hw as first question Keruskerfuerst ask was about hw info.
On another note i would say it's always Keruskerfuerst's first question everywhere, like he wants to know anyone hw :)

Perfect Gentleman wrote:
I have no clue, but only one that kernels 4.3-4.4-git can cause that as it starts to happen at time installing 4.3. But with gcc-5.3 I can't boot to kernels older than 4.3.
wtf? what should i to investigate?


I would investigate first software, you seems to says it appears when you switch to 4.3 but was working fine prior 4.3.
If gcc-5.3 cannot do a <4.3 kernel, just use an older gcc (is that so hard to do, really?)
You can also just use a livecd with a >=4.3 kernel from any distro and see if your system freeze with it, allowing you to answer: "not hw problem", "not a 4.3 kernel problem", and shortening the problem to "kernel setting problem".
If your system keep freezing with livecd, go with a <4.3 livecd to shorten the problem to a kernel version (might be a regression)


So: if i were you i would dig what i have change in my kernel from 4.2 to 4.3 that lead to my computer freezing crazy.
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Perfect Gentleman
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Joined: 18 May 2014
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PostPosted: Tue Dec 22, 2015 11:16 am    Post subject: Reply with quote

@krinn, I see no point in using LiveCd as I won't use them properly.
Yep, before 4.3 i got no such problems.
I don't wanna go back to gcc-4.9
Using 4.4-rc6, no freeze so far.
Tested with mprime for 1.5 hour, no errors too.
Tomorrow test with mprime longer.
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NeddySeagoon
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Joined: 05 Jul 2003
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PostPosted: Tue Dec 22, 2015 11:20 am    Post subject: Reply with quote

krinn,

I think its a system problem. Operational safety margins have been eroded here, there and everywhere and the system has producing errors every now and again. I would expect taking any steps to improve the safety margins to correlate with an improved error rate.
Correlate does not mean that the change is the root cause. That will probably never be known.
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.
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Keruskerfuerst
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Joined: 01 Feb 2006
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Location: near Augsburg, Germany

PostPosted: Wed Dec 23, 2015 7:24 am    Post subject: Reply with quote

If the computer freezes from time to time, the problem can not be found easily.
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Perfect Gentleman
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Joined: 18 May 2014
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PostPosted: Wed Dec 23, 2015 4:17 pm    Post subject: Reply with quote

Guys, I think I've found the reason and resolved it. The problem was in F2FS for root, it'd been corrupted atfter several blackout. I thought that it's safe to use it for root, but it's not. Now root is on EXT4.
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