https://bugzilla.kernel.org/show_bug.cgi?id=21032
Len Brown <l...@kernel.org> changed:
What |Removed |Added
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Status|NEW |ASSIGNED
CC| |acpi-bugzi...@lists.sourcef
| |orge.net
AssignedTo|power-management_intel_idle |l...@kernel.org
|@kernel-bugs.osdl.org |
--- Comment #15 from Len Brown <l...@kernel.org> 2010-10-24 03:32:13 ---
> pressing the powerbutton
> or a key on the keyboard makes the system continue
does a single press get the system "un-stuck" and it
runs normally from then on, or do you have to continue
to give it button events to keep it from stalling again?
> max_cstate=2 fails the strongest
> ... max_cstate=4 has not such a strong effect
Hmm, this may be because in max_cstate=2, we use
C2 a lot, and the LAPIC timer is failing in C2.
But if not limited to C2, we rarely use C2
and lapic_timer_relaible_states instructs us
to not use that timer in C4 where we know it stops:
intel_idle: lapic_timer_reliable_states 0x6
> without any other bootparams, try "nolapic_timer"
> yes, works .. does not hang ..
Okay, that is a "smoking gun".
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