linux-kernel - Re: [Bug #16307] i915 in kernel 2.6.35-rc3, high number of wakeups

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Message-ID: <4C7CB18D.4020601@postal.uv.es>
Date:	Tue, 31 Aug 2010 09:38:53 +0200
From:	Enrico Bandiello <enban@...tal.uv.es>
To:	Kan-Ru Chen <ckanru@...il.com>
CC:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	Maciej Rutecki <maciej.rutecki@...il.com>,
	Enrico Bandiello <enban@...mni.uv.es>
Subject: Re: [Bug #16307] i915 in kernel 2.6.35-rc3, high number of wakeups

On 08/31/2010 04:19 AM, Kan-Ru Chen wrote:

> Same with v2.6.36-rc3
>
> $ sudo powertop -d -t 20
> ...
> Wakeups-from-idle per second : 196.2    interval: 20.0s
> no ACPI power usage estimate available
> Top causes for wakeups:
>    25.4% ( 59.6)   [i915@pci:0000:00:02.0]<interrupt>

I can confir this behaviour until 2.6.32-rc2. Couldn't try with -rc3 
because compilation exited with error on my laptop...
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