Date: Fri, 13 Sep 2002 14:40:22 +0000 From: Kyle Butt <kylebutt@myrealbox.com> To: Daniel Rock <D.Rock@t-online.de> Cc: freebsd-questions@freebsd.org Subject: Re: Clock runs too fast Message-ID: <20020913144022.GB58693@TriGem350> In-Reply-To: <3D7B4638.1060007@t-online.de> References: <20020907231952.A5525@attbi.com> <3D7B4638.1060007@t-online.de>
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On Sun, Sep 08, 2002 at 02:44:40PM +0200, Daniel Rock wrote: > Craig Rodrigues schrieb: > > >Hi, > > > >I have been having this problem with -current for the past 2 weeks now > >(I am new to -current and just started using it 2 weeks ago). > >I just did a cvsup and rebuilt the kernel and rebuilt the world. > > > >My clock seems to be running too fast, and I keep resetting it > >with ntpdate. > > > >[...] > > > >Now the clock seems to run at a more reasonable rate. > > > >Is there a problem with the ACPI code or with my > >hardware (an ASUS P5A-B motherboard from about 3 or 4 years ago). > > > >How can I default to i8254 as my default timer? Is there > >something I should put in device.hints? > > > I had similar problems with a Gigabyte GA-5AX (also with ALi Aladdin V > chipset). Without setting > debug.acpi.disable = "timer" > the clock runs twice as fast as it should be. This problem seems to be > introduced in the ACPI update around July 2001. I didn't find any > solution other than disabling ACPI timecounter. That setting disappeared a while ago. I found another solution to the twice as fast problem. I doubled machdep.acpi_timer_freq in /etc/sysctl.conf I started by halving that, but that made my clock go 4x. Yikes. So I doubled it. If anyone knows how to set this at boot, please tell me. machdep.acpi_timer_freq=7159090 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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