Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262268AbVDGWsI (ORCPT ); Thu, 7 Apr 2005 18:48:08 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262621AbVDGWsI (ORCPT ); Thu, 7 Apr 2005 18:48:08 -0400 Received: from gate.crashing.org ([63.228.1.57]:48094 "EHLO gate.crashing.org") by vger.kernel.org with ESMTP id S262268AbVDGWqJ (ORCPT ); Thu, 7 Apr 2005 18:46:09 -0400 Subject: Re: Linux 2.6.12-rc2 From: Benjamin Herrenschmidt To: Nish Aravamudan Cc: Moritz Muehlenhoff , Linux Kernel list In-Reply-To: <29495f1d05040711544695ce89@mail.gmail.com> References: <1112827342.9567.189.camel@gaston> <20050407175026.GA5872@informatik.uni-bremen.de> <29495f1d05040711544695ce89@mail.gmail.com> Content-Type: text/plain Date: Fri, 08 Apr 2005 08:45:02 +1000 Message-Id: <1112913902.9568.304.camel@gaston> Mime-Version: 1.0 X-Mailer: Evolution 2.0.4 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1650 Lines: 36 On Thu, 2005-04-07 at 11:54 -0700, Nish Aravamudan wrote: > On Apr 7, 2005 10:50 AM, Moritz Muehlenhoff wrote: > > Benjamin Herrenschmidt wrote: > > > > 1. When resuming from S3 suspend and having switched off the backlight > > > > with radeontool the backlight isn't switched back on any more. > > > > > > I'm not sure what's up here, it's a nasty issue with backlight. Can > > > radeontool bring it back ? > > > > Before suspending I power down the backlight with "radeontool light off" > > and with 2.6.11 the display is properly restored. With 2.6.12rc2 the > > backlight remains switched off and if I switch it on with radeontool it > > becomes lighter, but there's still no text from the fbcon, just the blank > > screen. > > FWIW, I have the same problem on a T41p with 2.6.11 and 2.6.12-rc2, > except that neither returns from suspend-to-ram with video restored on > the LCD. I believe I was able to get video restored on an external CRT > in either 2.6.12-rc2 or 2.6.12-rc2-mm1, but the LCD still didn't > restore (can verify later today, if you'd like). I had dumped out the > radeontool regs values before & after the sleep, in case they help. > They are attached. > > I posted these problems in the "Call for help S3" thread, but no one responded. I would say the different value in LVDS_GEN_CNTL explains it. I'll see if I can force radeonfb to save/restore this. Ben. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/