Date: Sat, 12 Nov 2016 15:32:29 +0000 From: Manish Jain <bourne.identity@hotmail.com> To: "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org>, "matthew@FreeBSD.org" <matthew@FreeBSD.org> Subject: Re: Need help to find out what caused system crash Message-ID: <VI1PR02MB097481CD503C1818613BD5F7F6BA0@VI1PR02MB0974.eurprd02.prod.outlook.com> In-Reply-To: <mailman.115.1478952002.20198.freebsd-questions@freebsd.org> References: <mailman.115.1478952002.20198.freebsd-questions@freebsd.org>
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On 11/12/16 17:30, freebsd-questions-request@freebsd.org wrote: > Your best bet is to raise a PR with all the detail you can. > freebsd-questions@... 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 > > https://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/ker= neldebug-gdb.html Hi Matthew, Thanks for replying. 1) As for raising a PR, do you mean I should create an issue at the=20 FreeBSD bugzilla ? 2) The URL you have suggested for generating a backtrace says I have to=20 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=20 could have been the problem. This machine is recovering from the effects of a supremely=20 malfunctioning graphics card (NVidia, for which the OEM Gigabyte has=20 generously declined any support for anything other than Windows). Replacing that card with a brand new Sapphire Radeon has greatly=20 improved things. This system worked well for 2 days straight with the=20 new card, and then suddenly crashed once. Just yesterday, I noticed that=20 the CPU temperature was mind-boggling. Even with low-to-moderate load,=20 my system was generally in the 80 deg Celsius band, with 82 being=20 touched every now and then. I did not want that situation to continue,=20 so I ordered a new Cooler Master cooler+fan. Installing the new fan a=20 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=20 improved this machine's prospects. a) Do you think the high CPU temperature could have been responsible for=20 the crash ? b) Is there an application under ports which can display CPU temperature=20 ? I don't want to be rebooting the system just to have a look into the=20 BIOS stats for that. Thanks again Manish Jain
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