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From: Pekka Enberg <penberg@cs.helsinki.fi>
To: alan-jenkins@tuffmail.co.uk
Cc: Corentin Chary <corentin.chary@gmail.com>,
	acpi4asus-user@lists.sourceforge.net, len.brown@intel.com,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] eeepc-laptop: enable camera by default
Date: Fri, 05 Jun 2009 17:50:12 +0300	[thread overview]
Message-ID: <1244213412.23533.41.camel@penberg-laptop> (raw)
In-Reply-To: <9b2b86520906050738kea062c9n1b2c0e767d6eb0aa@mail.gmail.com>

Hi Alan,

On Fri, 2009-06-05 at 15:38 +0100, Alan Jenkins wrote:
> Ok.  I didn't bother shutting down my system, but I get a similar
> difference; 16 wakeups/s disabled v.s. 25 enabled.  Anecdotally,
> disabling the camera does help battery life, and presumably Asus had
> good reason to implement it!  (The shipped OS "fixes" the usability
> problem by patching the camera apps).
> 
> BUT I found that autosuspend didn't seem to break anything, and
> enabling it also got me down to 16 wakeups/s.  I think this is ideal
> because autosuspend is automatic so I can save power without manual
> toggling.
> 
> Here's some magic to enable autosuspend:
> 
> # echo -n auto > /sys/bus/usb/drivers/uvcvideo/*:*/../power/level
> 
> Ideally this wants to be enabled automatically using a udev rule.

Can the kernel do this by default for this specific driver on eeepc?

			Pekka


  reply	other threads:[~2009-06-05 14:50 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-06-05  8:59 [PATCH] eeepc-laptop: enable camera by default Pekka J Enberg
2009-06-05 11:46 ` Corentin Chary
2009-06-05 12:44   ` Pekka Enberg
2009-06-05 13:02     ` Corentin Chary
2009-06-05 13:39       ` Alan Jenkins
2009-06-05 13:51       ` Pekka Enberg
2009-06-05 13:54         ` Pekka Enberg
2009-06-05 13:58         ` Corentin Chary
2009-06-05 14:38         ` Alan Jenkins
2009-06-05 14:50           ` Pekka Enberg [this message]
2009-06-05 14:55             ` Alan Jenkins
2009-06-05 15:08               ` Alan Jenkins
2009-06-05 15:14                 ` Pekka Enberg
2009-06-07 14:54                 ` Darren Salt
2009-06-07 15:41                   ` Alan Jenkins
2009-06-07 23:28                     ` Matthew Garrett
2009-06-08  3:03                       ` Alan Stern
2009-06-08  3:07                         ` Matthew Garrett
2009-06-08  3:10                           ` Alan Stern
2009-06-08 15:00                             ` Matthew Garrett
2009-06-08 20:44                               ` Alan Stern
2009-06-05 15:13               ` Alan Stern
2009-06-05 15:22                 ` Pekka Enberg
2009-06-05 21:01   ` Woody Suwalski
2009-06-06  7:12     ` Corentin Chary
2009-06-06  8:04       ` Alan Jenkins
2009-06-05 20:08 ` Andrew Morton
2009-06-06  7:25   ` Corentin Chary
2009-06-06  7:31     ` Andrew Morton
2009-06-06  7:52       ` Corentin Chary
2009-06-06  9:17         ` Pekka Enberg
2009-06-06 10:17           ` Corentin Chary

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