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Bug#279260: kernel-image-2.6.8-1-686: acpi_poweroff doesn't turn off laptop CPU - overheats and switches off

Package: kernel-image-2.6.8-1-686
Version: 2.6.8-4
Severity: important

Since I upgraded from 2.6.7 to 2.6.8 poweroff has been failing to

Someone else reported ACPI problems with a dell laptop, and changes
were made that fixed their problem

My problem changed also, but still remains with 2.6.8

Originally /sbin/shutdown -h now resulted in the system
shutting down normally, and powering off completey.

After upgrade to 2.6.8 poweroff stopped with the power led lit,
and the CPU running full ( and heating ) - so I needed to press
the power off key to finish the power off

After the upgrade to kernel-image-2.6.8-i386 2.6.8-4
the shutdown behaviour changed - the power led switches off
but if I don't press the power button to turn the machine off
the CPU keeps going and only the internal temperature cut off
actually shuts down the machine.

I've been presented with the "system automatically shutdown the system
because it exceeded safe temperatures" sign twice - so I've returned
to 2.6.7

Dell Inspiron 8600 ( BIOS A10 )

-- System Information:
Debian Release: 3.1
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: i386 (i686)
Kernel: Linux 2.6.7-1-686
Locale: LANG=en_IE@euro, LC_CTYPE=en_IE@euro (charmap=ISO-8859-15)

Versions of packages kernel-image-2.6.8-1-686 depends on:
ii  coreutils [fileutils]         5.2.1-2    The GNU core utilities
ii  fileutils                     5.2.1-2    The GNU file management utilities 
ii  initrd-tools                  0.1.74     tools to create initrd image for p
ii  module-init-tools             3.1-pre6-1 tools for managing Linux kernel mo

-- no debconf information

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