http://bugzilla.kernel.org/show_bug.cgi?id=10914
Summary: 40000 + wakes per second
Product: ACPI
Version: 2.5
KernelVersion: 2.6.26-rc6
Platform: All
OS/Version: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Power-Processor
AssignedTo: [EMAIL PROTECTED]
ReportedBy: [EMAIL PROTECTED]
Latest failing kernel version: 2.6.26rc6
Earliest failing kernel version: 2.6.24
Last working kernel: ?
Distribution: Ubuntu 8.04, x64
Hardware Environment: Acer Extensa 5220
Intel Celeron M 530, 2 gb ram,
Software Environment: Single User Mode
Problem Description: At some point within usually a minute or two of loading
the processor.ko module, the cpu starts waking up around 45 000 to 50 000 times
per second.
# acpi=noirq
# disable_8254_timer
does not help
changes nothing
# nohz=off
reduces wakes to a constant ~1000
probably doesn't use C-states
# acpi=off
or # rm /lib/modules/$VER/kernel/drivers/acpi/processor.ko
fixes problem
wakes stay down, powertop doesn't show C-states
# rmmod -wf processor, rmmod still shows me:
same as acpi=off, but lsmod shows
"processor 26864 1"
# blacklist yenta_socket, pcmcia, rsrc
does not help
tested in 2.6.24, 2.6.25.6 and 2.6.26-rc6.
The interesting thing for my sytem is that the problem *stops* after suspending
and resuming from s3. The problem reappears on the next reboot.
Just let me know if I should post some more information or try something.
I will attach some logs now.
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