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    SubjectRe: [2.6.0-test10] cpufreq: 2G P4M won't go above 1.2G - cpuinfo_max_freq too low
    On Thursday November 27th 2003 Simon wrote:

    > I have a P4 2ghz (in a thinkpad), but it's not running at over about 1.2ghz
    > now. If I `cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq` it
    > tells me: "1198976". It should go faster than that. Similarly,
    > scaling_available_frequencies says "149872 299744 449616 599488 749360 899232
    > 1049104 1198976"

    Don't know if this will help you, but I had the exact same problem on a
    Compaq EVO N1050v (well 1.8 GHz instead of 2.0 GHz and it initially only
    managed 1.2 GHz as mentioned in /proc/cpuinfo and from benchmarks).

    It turned out to be an ACPI problem. Booting on 2.6 with "acpi=off" lead
    to the correct 1.8GHz determination instead of only 1.2GHz, but no working
    ACPI of course. On 2.4.21 booting either with of without ACPI made no
    difference and lead on both occasions to 1.8GHz.

    After upgrading the BIOS to the latest version I could finally run 2.6
    with ACPI and at full capacity.

    Incidentally a certain other OS which shall remain unnamed, reported the
    maximum speed also as 1.2 GHz before the BIOS upgrade and as 1.8 GHz
    after, but worked both times at 1.8 GHz, just as in Linux 2.4 ;-) After
    this final hurdle had been straddled I regained control of /dev/hda1;
    Anton does great work on NTFS, but I have work to do!
    Marco Roeland
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