http://bugzilla.kernel.org/show_bug.cgi?id=11993
Summary: Crash in early boot process when ACPI_PROCESSOR is
enabled in dual core mode
Product: ACPI
Version: 2.5
KernelVersion: 2.6.27
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: ACPICA-Core
AssignedTo: [EMAIL PROTECTED]
ReportedBy: [EMAIL PROTECTED]
CC: acpi-bugzilla@lists.sourceforge.net
Latest working kernel version: none
Earliest failing kernel version: 2.6.24
Distribution: Ubuntu 8.04 / 8.10 64 bit and 32 bit
Hardware Environment: Laptop LG E500 V.APSCG, Intel Core2Duo T8100 @2.1GHz, 2GB
RAM, ATI Mobility Radeon
Software Environment: Curently Ubuntu 8.10 "Intrepid" 64 bit (same problem with
other Distributions and also with 32 bit)
Problem Description: The boot process crashes in a very early stage (before the
root file system is mounted). I figured out that the problem vanishes as soon
as I compile a kernel with the ACPI_PROCESSOR option turned off. Further more,
the systems boot also with ACPI_PROCESSOR enabled as soon as I turn off dual
core support in the AMI BIOS i.e. boot on a single core.
I tried to fix a DSDT table issue by using iasl. Nevertheless this does not
help. I am not sure if it is a pure kernel problem or a mixed kernel/DSDT or
SSDT table problem.
Since the crash occurs that early I cannot provide much helpful information. I
could send you a photo of the screen in crashed state and of course also the
complete ACPI table infos extracted with acpidump.
Steps to reproduce: Take an LG E500 V.APSCG and simpliy insert a life CD of
Ubuntu 8.04/8.10 - or an other distribution.
Note: I did not try older distributions. The oldest kernel I tries was 2.6.24
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