http://bugzilla.kernel.org/show_bug.cgi?id=13995 Summary: Incorrect CPU frequency reported Product: Power Management Version: 2.5 Kernel Version: 2.6.29.5 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: cpufreq AssignedTo: cpufreq@xxxxxxxxxxxxxxx ReportedBy: iamtheben@xxxxxxxxx Regression: Yes Both cpufreq-info and /proc/cpuinfo are incorrectly reporting CPU frequencies on my system. They both say my 1.86GHz Core 2 Duo is capable of running at either 600 or 700MHz. Reasons I believe this to be incorrect: The BIOS configuration screen confirms that the processor is not underclocked (or overclocked). I have tested with Live CDs and got much higher reported frequencies. The bogomips score is consistent with what I think the frequency should be, and nearly identical to that recorded when running a Live CD which reports sensible frequencies, suggesting that the live CD is not actually making the CPU faster :-). The system does not feel like a 600MHz system; I like to think I would notice that sort of performance. I am running Gentoo Linux (with a "vanilla" kernel). The LiveCD which reported high frequencies was Slax using kernel 2.6.27.8 (I don't know how they patch it), which claimed 1903.992MHz (which seems too high to me). The slax kernel did not seem to support frequency scaling, so I could not determine which other frequencies should be supported. I also tested the Sabayon LiveCD using kernel "2.6.29-sabayon", which had an identical (save for very small bogomips differences) /proc/cpuinfo to my real system. I would like to test various old kernels properly on my actual file system with similar configs, but I am using an ext4 root partition. -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. -- To unsubscribe from this list: send the line "unsubscribe cpufreq" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
