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kern/38683: T61 cannot suspend with recent kernels
>Synopsis: Thinkpad T61/amd64 cannot suspend with recent kernels
>Arrival-Date: Sun May 18 02:55:00 +0000 2008
>Originator: Steven M. Bellovin
>Release: NetBSD 4.99.63
Department of Computer Science, Columbia University
System: NetBSD yellowstone.machshav.com 4.99.63 NetBSD 4.99.63 (YELLOWSTONE)
#0: Fri May 16 23:56:11 EDT 2008
My Thinkpad T61 (running amd64) cannot suspend/resume with recent
-current kernels. It suspends; at resume time, it prints
ioapic0 renabling -- and nothing more happens. The crescent 'suspend'
light stays on. I also have some evidence that the system will
overheat if I leave it in this state for too long; for fairly obvious
reasons, I'm not inclined to experiment further on that point...
I've tried disabling [eou]hci and azalia via 'boot -c'; that didn't
help. If I diable ioapic, it does resume; however, the keyboard
is dead, so it's not a very useful workaround.
I don't know just when this started. I'm running a kernel from
March 7; it works. However, I can't upgrade, since every kernel I've
built in the last few weeks exhibits this problem.
I've tried a kernel that works for Jared; it does not work for me.
As far as I know, the primary difference between his machine and
mine is that I have a fingerprint reader and Bluetooth; those, however,
show up as USB devices, so disabling [eou]hci should have prevented
any problems from them.
Boot to single-user and do 'sysctl -w machdep.sleep_state=3'.
Alternatively, try any other way to suspend, such as shutting
the lid or hitting Fn+F4.
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