From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kevin Hilman Subject: Re: Doesn't power management switch off the LCD's LED backlight? Date: Tue, 19 May 2009 16:22:34 -0700 Message-ID: <87ljos4r0l.fsf@deeprootsystems.com> References: <094F3A5A-9980-4F07-9CB2-3A90EA54C9DE@mac.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from rv-out-0506.google.com ([209.85.198.234]:22008 "EHLO rv-out-0506.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754579AbZESXWg (ORCPT ); Tue, 19 May 2009 19:22:36 -0400 Received: by rv-out-0506.google.com with SMTP id f9so29816rvb.1 for ; Tue, 19 May 2009 16:22:37 -0700 (PDT) In-Reply-To: <094F3A5A-9980-4F07-9CB2-3A90EA54C9DE@mac.com> (Elvis Dowson's message of "Tue\, 19 May 2009 22\:52\:59 +0400") Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Elvis Dowson Cc: Linux OMAP Users Elvis Dowson writes: > I just applied all the 191 pm patches successfully. I was just > wondering, doesn't the pm patches turn off the LCD LED backlight? I > have a samsung lcd touschreen, and although the screen turns dark when > it goes to suspend mode, I can still see the LED backlight on from if > I look at it at an angle. As I've stated before, the PM branch currently focues on getting core PM infrastructure in place. There are lots of drivers that do not have proper PM support in place. In this case, the screen blanking is a feature of the framebuffer/display drivers and has yet to be implemented. Kevin