2009-01-11 14:03:10

by Rafael J. Wysocki

Subject: [Bug #12391] Processor does not go below C2 state until usb.autosuspend is enabled

This message has been generated automatically as a part of a report
of regressions introduced between 2.6.27 and 2.6.28.

The following bug entry is on the current list of known regressions
introduced between 2.6.27 and 2.6.28. Please verify if it still should
be listed and let me know (either way).


Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=12391
Subject : Processor does not go below C2 state until usb.autosuspend is enabled
Submitter : Gergely Imreh <[email protected]>
Date : 2009-01-09 02:35 (3 days old)

2009-01-18 08:24:22

by Pavel Machek

Subject: Re: [Bug #12391] Processor does not go below C2 state until usb.autosuspend is enabled

On Sun 2009-01-11 12:41:04, Rafael J. Wysocki wrote:
> This message has been generated automatically as a part of a report
> of regressions introduced between 2.6.27 and 2.6.28.
>
> The following bug entry is on the current list of known regressions
> introduced between 2.6.27 and 2.6.28. Please verify if it still should
> be listed and let me know (either way).
>
>
> Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=12391
> Subject : Processor does not go below C2 state until usb.autosuspend is enabled
> Submitter : Gergely Imreh <[email protected]>
> Date : 2009-01-09 02:35 (3 days old)

Are you sure that's regression? IIRC usb.autosuspend is needed for
C3. It is certainly needed if you have *any* usb device plugged in.

What hw is that?

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