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HT: CPU0 detected two times

DISCUSSION Joerg Platte 1 participant 2 messages Oct 5, 2005 – Oct 10, 2005 1 message not in the archive ACPI

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Hi!

Kernels starting with 2.6.13 detect a HyperThreading CPU two times as CPU0:
ACPI: CPU0 (power states: C1[C1])
ACPI: CPU0 (power states: C1[C1])

Then, the kernel hangs. Previous kernels did not have this problem. The dsdt is attached.

regards,
Jörg

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#2 lore raw

Am Mittwoch, 5. Oktober 2005 07:54 schrieb Joerg Platte:
Hi!

Quoted 6 lines

Kernels starting with 2.6.13 detect a HyperThreading CPU two times as CPU0:
ACPI: CPU0 (power states: C1[C1])
ACPI: CPU0 (power states: C1[C1])

Then, the kernel hangs. Previous kernels did not have this problem. The dsdt is attached.

The problem exist on various Fujitsu-Siemens computers (W600 series). Kernels up to 2.6.12 can boot without ACPI related problems. All tested newer kernels (2.6.13, 2.6.13.3 and 2.6.14-rc3) hang after ACPI cpu detection. I attached the /proc/acpi/dsdt output to this mail. What can I do to resolve this issue? I solved this problem temporaly by disabling hypter threading in BIOS, but there should be a better solution...

regards,
Jörg