Bug#421780: linux-image-2.6.18-4-686: Kernel with ACPI + SMP + AC power plugged on sony vaio S4M really slow - Debian

This is a discussion on Bug#421780: linux-image-2.6.18-4-686: Kernel with ACPI + SMP + AC power plugged on sony vaio S4M really slow - Debian ; Package: linux-image-2.6.18-4-686 Version: 2.6.18.dfsg.1-12 Severity: normal On this laptop (Sony VAIO S4M) if ACPI + SMP is enabled in the kernel (the laptop isn't an SMP) and the power cable is plugged in the kernel runs REALLY slow. I don't ...

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Thread: Bug#421780: linux-image-2.6.18-4-686: Kernel with ACPI + SMP + AC power plugged on sony vaio S4M really slow

  1. Bug#421780: linux-image-2.6.18-4-686: Kernel with ACPI + SMP + AC power plugged on sony vaio S4M really slow

    Package: linux-image-2.6.18-4-686
    Version: 2.6.18.dfsg.1-12
    Severity: normal


    On this laptop (Sony VAIO S4M) if ACPI + SMP is enabled in the kernel
    (the laptop
    isn't an SMP) and the power cable is plugged in the kernel runs REALLY
    slow. I don't know what can cause this problems, but I know is SMP/ACPI
    related, because if I disable ACPI through acpi=off the kernel is back
    to normal speed and this also happens if I recompile the kernel without
    SMP support enabled.

    DMESG attached in next message


    -- System Information:
    Debian Release: 4.0
    APT prefers stable
    APT policy: (500, 'stable')
    Architecture: i386 (i686)
    Shell: /bin/sh linked to /bin/bash
    Kernel: Linux 2.6.18
    Locale: LANG=it_IT.UTF-8, LC_CTYPE=it_IT.UTF-8 (charmap=UTF-8)

    Versions of packages linux-image-2.6.18-4-686 depends on:
    ii coreutils 5.97-5.3 The GNU core utilities
    ii debconf [debconf-2.0] 1.5.11 Debian configuration management sy
    ii initramfs-tools [linux-initra 0.85g tools for generating an initramfs
    ii module-init-tools 3.3-pre4-2 tools for managing Linux kernel mo

    Versions of packages linux-image-2.6.18-4-686 recommends:
    ii libc6-i686 2.3.6.ds1-13 GNU C Library: Shared libraries [i

    -- debconf information:
    linux-image-2.6.18-4-686/preinst/failed-to-move-modules-2.6.18-4-686:
    linux-image-2.6.18-4-686/preinst/lilo-initrd-2.6.18-4-686: true
    shared/kernel-image/really-run-bootloader: true
    linux-image-2.6.18-4-686/preinst/elilo-initrd-2.6.18-4-686: true
    linux-image-2.6.18-4-686/preinst/overwriting-modules-2.6.18-4-686: true
    linux-image-2.6.18-4-686/prerm/removing-running-kernel-2.6.18-4-686: true
    linux-image-2.6.18-4-686/prerm/would-invalidate-boot-loader-2.6.18-4-686: true
    linux-image-2.6.18-4-686/postinst/bootloader-test-error-2.6.18-4-686:
    linux-image-2.6.18-4-686/preinst/abort-overwrite-2.6.18-4-686:
    linux-image-2.6.18-4-686/postinst/old-system-map-link-2.6.18-4-686: true
    linux-image-2.6.18-4-686/postinst/depmod-error-2.6.18-4-686: false
    linux-image-2.6.18-4-686/preinst/abort-install-2.6.18-4-686:
    linux-image-2.6.18-4-686/preinst/lilo-has-ramdisk:
    linux-image-2.6.18-4-686/postinst/bootloader-error-2.6.18-4-686:
    linux-image-2.6.18-4-686/postinst/depmod-error-initrd-2.6.18-4-686: false
    linux-image-2.6.18-4-686/postinst/old-initrd-link-2.6.18-4-686: true
    linux-image-2.6.18-4-686/preinst/bootloader-initrd-2.6.18-4-686: true
    linux-image-2.6.18-4-686/preinst/already-running-this-2.6.18-4-686:
    linux-image-2.6.18-4-686/preinst/initrd-2.6.18-4-686:
    linux-image-2.6.18-4-686/postinst/create-kimage-link-2.6.18-4-686: true
    linux-image-2.6.18-4-686/postinst/old-dir-initrd-link-2.6.18-4-686: true
    linux-image-2.6.18-4-686/postinst/kimage-is-a-directory:


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  2. Bug#421780: linux-image-2.6.18-4-686: Kernel with ACPI + SMP + AC power plugged on sony vaio S4M really slow

    On Tue, May 01, 2007 at 02:33:12PM +0200, Marcello Maggioni wrote:
    > Package: linux-image-2.6.18-4-686
    > Version: 2.6.18.dfsg.1-12
    > Severity: normal
    >
    >
    > On this laptop (Sony VAIO S4M) if ACPI + SMP is enabled in the kernel
    > (the laptop
    > isn't an SMP) and the power cable is plugged in the kernel runs REALLY
    > slow. I don't know what can cause this problems, but I know is SMP/ACPI
    > related, because if I disable ACPI through acpi=off the kernel is back
    > to normal speed and this also happens if I recompile the kernel without
    > SMP support enabled.


    Does this error still occur with more recent kernel versions?

    If you're running Etch, could you try to reproduce this bug
    with the 2.6.24 based kernel added in 4.0r4?
    http://packages.qa.debian.org/l/linux-2.6.24.html

    Cheers,
    Moritz



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