[ltp] Re: X60 - (bad) experience, others?

[Rolf Kutz]

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On 07/02/08 11:54 -0500, Stefan Monnier wrote:
>>> I basically found the guilty: uhci_hcd!
>>> The strange thing is that auto-suspend is enabled (and also on all
>>> devices) and that I did not have to remove it for getting 9.5W with
>>> 2.6.22. So something from 2.6.22 -> 2.6.24 changed in uhci_hcd and the
>>> change was not good, i.e. causing the CPU not entering C3 in 70-80%.
>>> Again, this was not necessary with 2.6.22...
>
>> IIRC auto-suspend for USB was disabled per default in 2.6.23 because it
>> broke too many devices.
>
>Ahhh.... is that what happens?  How do I turn it back on?

# echo "options usbcore autosuspend=3D1" >> /etc/modprobe.d/options

Then reload the usbcore.

regards, Rolf

--=20
=2E..about the greatest democrazy in the world.

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