From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tony Lindgren Subject: Re: N810 suspend Date: Tue, 16 Dec 2008 08:29:52 -0800 Message-ID: <20081216162951.GP19551@atomide.com> References: <20081215210823.GD5334@swansys> <20081215211430.GJ10664@atomide.com> <20081216092531.c440dc26.jarkko.nikula@nokia.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mho-01-bos.mailhop.org ([63.208.196.178]:54947 "EHLO mho-01-bos.mailhop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755970AbYLPQ3y (ORCPT ); Tue, 16 Dec 2008 11:29:54 -0500 Content-Disposition: inline In-Reply-To: <20081216092531.c440dc26.jarkko.nikula@nokia.com> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Jarkko Nikula Cc: Linux-OMAP List * Jarkko Nikula [081215 23:26]: > On Mon, 15 Dec 2008 13:14:32 -0800 > "ext Tony Lindgren" wrote: > > > > I'm running Debian on an N810. With the current state of power management in > > > linux-omap, the N810 will only run (with LCD off) for about 12 hours on a > > > charge. > > > > Well you need to make sure the serial clocks are not enabled. Kevin > > has some patches for that in his pm branch. So you'll most likely want > > to use his whole pm branch. > > > > Also, you need to make sure you have sleep while idle enabled: > > > > # echo 1 > /sys/power/sleep_while_idle > > > > It used to work, but I have not tried for six months or so. > > > How did you disable the LCD and FB clocks? Does > xserver-xorg-video-fbdev from Debian (it works!) do necessary steps with > omap fb driver or is xomap required? Oh, I just tested that sleep-while-idle worked when fb was blanked. I had a script that forced the LCD off via /sys, sorry don't remember the path now. Will be also heading to catch a plane in few hours, may not be able to check it right now. Regards, Tony