Need help to find out what caused system crash
bourne.identity at hotmail.com
Sat Nov 12 15:32:39 UTC 2016
On 11/12/16 17:30, freebsd-questions-request at freebsd.org wrote:
> Your best bet is to raise a PR with all the detail you can.
> freebsd-questions at ... tends not to be read by all of the kernel
> developers who might be in a position to help you out.
> If you can, try and generate a backtrace according to the instructions in
Thanks for replying.
1) As for raising a PR, do you mean I should create an issue at the
FreeBSD bugzilla ?
2) The URL you have suggested for generating a backtrace says I have to
use kernel.debug. But 'locate kernel.debug' produces no output on my system.
3) In case I cannot raise an effective PR, I am trying to guess what
could have been the problem.
This machine is recovering from the effects of a supremely
malfunctioning graphics card (NVidia, for which the OEM Gigabyte has
generously declined any support for anything other than Windows).
Replacing that card with a brand new Sapphire Radeon has greatly
improved things. This system worked well for 2 days straight with the
new card, and then suddenly crashed once. Just yesterday, I noticed that
the CPU temperature was mind-boggling. Even with low-to-moderate load,
my system was generally in the 80 deg Celsius band, with 82 being
touched every now and then. I did not want that situation to continue,
so I ordered a new Cooler Master cooler+fan. Installing the new fan a
few minutes back has brought down CPU temperature crashing down to 46 deg C.
It will be a few days before I can be sure whether the fan switch has
improved this machine's prospects.
a) Do you think the high CPU temperature could have been responsible for
the crash ?
b) Is there an application under ports which can display CPU temperature
? I don't want to be rebooting the system just to have a look into the
BIOS stats for that.
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