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    SubjectRe: Kernel 2.5.55 failed to boot with ACPI support
    Dominik Brodowski wrote:

    > On Mon, Jan 13, 2003 at 12:04:02AM +0100, Alessandro Suardi wrote:
    > > Andrew Grover wrote:
    > >
    > > > > From: Ole J. Hagen [mailto:olehag_2001@yahoo.no]
    > > > > I just wanted to inform that kernel-2.5.55 failes to boot
    > > > > when ACPI support is
    > > > > compiled in the kernel.
    > > > >
    > > > > I have following configuration; Dell Optiplex GX-240, Pentium
    > > > > 4 (1.5 GHz), ATI RAGE 128.
    > > >
    > > > How exactly does it fail?
    > >
    > > My brand new Dell Latitude C640 oopses on boot in 2.5.56 if I
    > > have CPU_FREQ config'd in. ACPI without CPU_FREQ is okay - well,
    > > it screws my framebuffer screen (what 2.4.21-pre3 doesn't) when
    > > the ACPI code does its bootup printk's, but after that the
    > > screen recovers.
    > >
    > > ...
    > >
    > > Back on topic, if you're interested I can rebuild my 2.5.56 with
    > > CPU_FREQ and write down the backtrace of the oops.
    > Would be great if you could do that - and tell what oops it is (NULL pointer
    > dereference etc.), in case you still see that on your screen.

    Sigh :(

    Rebuilt with CPU_FREQ, doesn't oops. It says

    cpufreq: Intel(R) SpeedStep(TM) for this processor not (yet) available

    Is the above message expected ? The CPU is a 1.8Ghz mobile P4.

    Still puzzled as to why... wait, this was a cold boot, let me try
    warmbooting... argh - the disk powered off. Bug 119 :(
    Nope, coldbooted in 2.4.21-pre3, rebooted in 2.5.56, still had no
    oops with a CPU_FREQ enabled kernel.


    --alessandro
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