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Message-ID: <20081015162143.GA19397@cosmic.amd.com> Date: Wed, 15 Oct 2008 10:21:43 -0600 From: Jordan Crouse <jordan.crouse@....com> To: Antipov Dmitry <dmantipov@...dex.ru> CC: linux-kernel@...r.kernel.org Subject: Re: 2.6.27: 0 MHz CPU and wrong system time on AMD Geode system On 15/10/08 10:39 +0400, Antipov Dmitry wrote: > After updating the kernel to 2.6.27 from 2.6.25.4, my system time goes wrong and > CPU becomes 0 MHz (as shown by /proc/cpuinfo), probably due to these issues: > > TSC: Unable to calibrate against PIT > TSC: No reference (HPET/PMTIMER) available > Marking TSC unstable due to could not calculate TSC khz > > The hardware is http://www.fit-pc.com/new/fit-pc-1-0-specifications.html, > and the base system is Fedora 9. > > More details: 2.6.25.4 .config: http://78.153.153.8/tmp/config-2.6.25.4.txt > 2.6.25.4 boot messages: http://78.153.153.8/tmp/boot-2.6.25.4.txt > 2.6.27 .config: http://78.153.153.8/tmp/config-2.6.27.txt > 2.6.27 boot messages: http://78.153.153.8/tmp/boot-2.6.27.txt Hmmm - this is an interesting regression. Please remove CONFIG_GEODE_MFGPT_TIMER=y from your 2.6.27 kernel and see if the problem goes away. I have been running 2.6.26.5 on my system with no problems, but I'm embarrassed to admit that I haven't run anything newer in a while. Jordan -- Jordan Crouse Systems Software Development Engineer Advanced Micro Devices, Inc. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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