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    SubjectRe: [REGRESSION] 2.6.24-rc1 fails to boot on a 486
    On Mon, 29 Oct 2007 14:47:49 +0100 (CET), Thomas Gleixner wrote:
    > On Mon, 29 Oct 2007, Mikael Pettersson wrote:
    >
    > > On Sun, 28 Oct 2007 21:33:02 -0700, H. Peter Anvin wrote:
    > > > Mikael Pettersson wrote:
    > > > > My old 486 fails to boot with the 2.6.24-rc1 kernel.
    > > > > Grub loads it, 4 lines of text appear but not the kernel's
    > > > > "Linux version <blah> greet", and the machine reboots.
    > > > > Double-checked with a serial console: nothing appears
    > > > > before it reboots.
    > > >
    > > > What four lines of text?
    > >
    > > They're impossible to capture because they're only visible
    > > on the VGA screen for like 0.2 seconds before the machine
    > > reboots and the screen is blanked; they don't show up on
    > > the serial console.
    > >
    > > They look like paths to the vmlinuz and initrd surrounded
    > > by [ ] brackets, so I guess they come from grub.
    >
    > Any chance to use serial console ?
    >
    > Enable CONFIG_EARLY_PRINTK and add
    >
    > earlyprintk=serial,ttyS0,115200,keep
    >
    > to the kernel command line.

    As I mentioned in my first message, I did hook up
    a serial console except I used the console=ttyS0,115200
    boot parameter, but the kernel rebooted before any
    output appeared. I can try the earlyprintk= version
    above next time I'm near the 486 if you think it will
    make any difference.

    > Can you please provide your .config file ?

    I posted a link to it in my first message:

    >Config is at http://user.it.uu.se/~mikpe/linux/tmp/486-config-2.6.24-rc1.
    >The kernel is unpatched 2.6.24-rc1 compiled with gcc-4.2.2.

    /Mikael
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