Date: Thu, 26 Feb 2004 20:34:09 -0800 (PST) From: "Jin Guojun[VFF]" <jin@adsl-63-198-35-122.dsl.snfc21.pacbell.net> To: FreeBSD-gnats-submit@FreeBSD.org Subject: kern/63431: motherboard going to suspend mode stops system clock after 4.9-R Message-ID: <200402270434.i1R4Y9pr000432@adsl-63-198-35-122.dsl.snfc21.pacbell.net> Resent-Message-ID: <200402270440.i1R4e6dx094700@freefall.freebsd.org>
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>Number: 63431 >Category: kern >Synopsis: motherboard going to suspend mode stops system clock after 4.9-R >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Thu Feb 26 20:40:06 PST 2004 >Closed-Date: >Last-Modified: >Originator: Jin Guojun[VFF] >Release: FreeBSD 4.9-RELEASE i386 >Organization: >Environment: System: FreeBSD spode.pacbell.net 4.9-RELEASE FreeBSD 4.9-RELEASE #0: Sat Nov 1 18:00:32 PST 2003 root@spode.pacbell.net:/usr/src/sys/compile/MinMax i386 FreeBSD 4.9-RELEASE and later. May be for all motherboards, but at least for listed below: ASUS A7V600 TYAN S2466N SuperMicro P4DPE ASUS P2B-DS >Description: If BIOS of a motherboard is set for suspend/stand-by mode when system is idle for a certain time, system will go into stand-by or suspend mode. I do not remember 4.8-R or earlier has problem on the system clock. But system clock is off when system is in suspend mode in 4.9-R and 5.2-R. After wake up, system did not syn its clock with the RTC. Two ways to correct system clock: use date command to update the time manually reboot the system (this means RTC is still correct) >How-To-Repeat: Try to enable "suspend mode" in power management in BIOS. >Fix: When system is suspended, only keyboard can wake it up by default. Maybe some motherborad can be waked up by LAN. I do not know if system can detect a wake up signal. If so, it should check if system clock is off from RTC. >Release-Note: >Audit-Trail: >Unformatted:
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