From owner-freebsd-questions@freebsd.org Tue May 19 13:48:17 2020 Return-Path: Delivered-To: freebsd-questions@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 5007B2D8053 for ; Tue, 19 May 2020 13:48:17 +0000 (UTC) (envelope-from tundra@tundraware.com) Received: from oceanview.tundraware.com (oceanview.tundraware.com [45.55.60.57]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mailman.tundraware.com", Issuer "mailman.tundraware.com" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 49RHJw36NYz4XfW for ; Tue, 19 May 2020 13:48:16 +0000 (UTC) (envelope-from tundra@tundraware.com) Received: from [192.168.0.2] (ozzie.tundraware.com [75.145.138.73]) (authenticated bits=0) by oceanview.tundraware.com (8.15.2/8.15.2) with ESMTPSA id 04JDkr21047919 (version=TLSv1.2 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO) for ; Tue, 19 May 2020 08:46:54 -0500 (CDT) (envelope-from tundra@tundraware.com) To: FreeBSD Mailing List From: Tim Daneliuk Subject: OT: Weird Hardware Problem Autocrypt: addr=tundra@tundraware.com; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.6.2 (oceanview.tundraware.com [45.55.60.57]); Tue, 19 May 2020 08:46:54 -0500 (CDT) X-TundraWare-MailScanner-Information: Please contact the ISP for more information X-TundraWare-MailScanner-ID: 04JDkr21047919 X-TundraWare-MailScanner: Found to be clean X-TundraWare-MailScanner-SpamCheck: not spam (whitelisted), SpamAssassin (not cached, timed out) X-TundraWare-MailScanner-From: tundra@tundraware.com X-Spam-Status: No X-Rspamd-Queue-Id: 49RHJw36NYz4XfW X-Spamd-Bar: / Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=pass (mx1.freebsd.org: domain of tundra@tundraware.com designates 45.55.60.57 as permitted sender) smtp.mailfrom=tundra@tundraware.com X-Spamd-Result: default: False [-0.32 / 15.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; ARC_NA(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; R_SPF_ALLOW(-0.20)[+a]; MIME_GOOD(-0.10)[text/plain]; PREVIOUSLY_DELIVERED(0.00)[freebsd-questions@freebsd.org]; DMARC_NA(0.00)[tundraware.com]; NEURAL_SPAM_MEDIUM(0.17)[0.170]; RCPT_COUNT_ONE(0.00)[1]; TO_DN_ALL(0.00)[]; NEURAL_HAM_SHORT(-0.19)[-0.188]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:14061, ipnet:45.55.32.0/19, country:US]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[] X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.33 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 19 May 2020 13:48:17 -0000 I was recently given a Dell Inspiron 3847 which has an i7-4790 and 16G of memory. Perfect for multibooting BSD and Linux. It needed a new power supply but now that this is installed, it's exhibiting a very strange problem. The machine will work for hours flawless and then - for no apparent reason - reboot randomly. The former owner reports that this was also happening when they last had it running Win8. I've run very heavy loads on it with load averages up to almost 50 - no problem. I've run overnight memory tests which return 0 errors. I've run CPU stress tests flawlessly and temperatures were fine. One hint here: I can consistently force the problem to happen if I start a Linux installation and request full disk encryption as part of the install. I doubt it has anything to with encryption per se, but there is some kind of pattern of use that it causing the reboot. Has anyone else ever seen something like this and/or have resolution? Is there a known bug with that processor? My first instinct was to blame flakey memory (DDR 1600 2x8G Hynix) but - as I said - memory testing is flawless. Thoughts and ideas most welcome. TIA, ---------------------------------------------------------------------------- Tim Daneliuk tundra@tundraware.com PGP Key: http://www.tundraware.com/PGP/