From: Steven Rostedt <rostedt@goodmis.org>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Linux Kernel list <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@osdl.org>
Subject: Re: [PATCH] [Fwd: Console locking and blanking]
Date: Tue, 16 Aug 2005 23:44:31 -0400 [thread overview]
Message-ID: <1124250271.5764.76.camel@localhost.localdomain> (raw)
In-Reply-To: <1124249381.8848.19.camel@gaston>
On Wed, 2005-08-17 at 13:29 +1000, Benjamin Herrenschmidt wrote:
> On Wed, 2005-08-17 at 11:41 +1000, Benjamin Herrenschmidt wrote:
>
> > (I'm blind and I use a braille display. I use those functions to blank
> > my laptop's screen so people don't read it, and hopefully to conserve
> > power.)
At the OLS I learned that the backlight of a laptop (when the screen is
black, but still glows) actually spends more wattage than when the
screen is lit. So, unless you actually turn the laptop display off,
switching it to black will actually burn the battery quicker.
-- Steve
next prev parent reply other threads:[~2005-08-17 3:44 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-17 1:41 [PATCH] [Fwd: Console locking and blanking] Benjamin Herrenschmidt
2005-08-17 3:29 ` Benjamin Herrenschmidt
2005-08-17 3:44 ` Steven Rostedt [this message]
2005-08-17 3:51 ` Benjamin Herrenschmidt
2005-08-17 3:55 ` Alejandro Bonilla Beeche
2005-08-17 4:16 ` Steven Rostedt
2005-08-17 6:00 ` Antonino A. Daplas
2005-08-18 9:53 ` Helge Hafting
2005-08-17 3:52 ` Jon Smirl
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