Thinkpad T42 USB remains powered when suspended

[Kevin Oberman]

> 
> I've tried loading and unloading the module in rc.suspend/rc.resume.
> 
> Any help with this would be greatly appreciated.

USB and battery life with the current USB stack are mutually
incompatible.

I would suggest that you try HPS USB stack. I know that Hans and others
are working to give birth to a really clean, efficient stack, but it
won't show up until after 7.0.

Aside from not turning off on suspend, the current stack will never
allow your system to drop to any sleep state other than C1. This will
really kill battery.

You might also try adding 'hw.pci.do_power_nodriver="2"' to
/boot/loader.conf.

I simply don't build my kernel with USB and only load it when I need
to. This may or may not be practical for you. I do run the HPS stack.
-- 
R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: oberman at es.net			Phone: +1 510 486-8634
Key fingerprint:059B 2DDF 031C 9BA3 14A4  EADA 927D EBB3 987B 3751
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