Date: Wed, 27 Jul 2005 09:43:17 +0900 (JST) From: "UEMURA (fka. MAENAKA) Tetsuya" <maenaka@pluto.dti.ne.jp> To: freebsd-stable@freebsd.org Subject: Re: em(4) stops passing data Message-ID: <20050727004317.0B4DD2085@towerrecords.minidns.net> In-Reply-To: <1904.192.168.1.190.1122383968.squirrel@webmail.devrandom.org.uk> References: <20050726021340.5410A2073@towerrecords.minidns.net> <1904.192.168.1.190.1122383968.squirrel@webmail.devrandom.org.uk>
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I think 4.9V is enough for em0 to work. Your problem is likely not caused by faulty PSU. -- UEMURA (fka. MAENAKA) Tetsuya <maenaka@pluto.dti.ne.jp> Posted on Tue, 26 Jul 2005 14:19:28 +0100 (BST) by author Chris Howells <howells@kde.org> > > I had had apparently same problem in April. For my time, em0 seemed dead, > > though no link down message was generated, and could go up again by > > `ifconfig em0 down; ifconfig em0 up'. > > My problem was caused by defected power supply which generated around > > 4.5V instead of 5V, and corrected completely by replacing of power > > supply. > Thanks, I've tried measuring that using a multimeter. The 12v rail > measures at about 12.6v, but the 5v line is only 4.9v. Is this likely to > cause problems? The PSU is a brand new 450W Antec. The same PSU in a very > similar system measures similar results.
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