From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Antonino A. Daplas" Subject: Re: Fw: [Bugme-new] [Bug 4468] New: Upgrade to 2.6.11.6 results in no longer being able to turn the lcd backlight off. Date: Thu, 14 Apr 2005 13:51:25 +0800 Message-ID: <200504141351.25084.adaplas@hotpop.com> References: <20050410172843.6366ef8a.akpm@osdl.org> Reply-To: linux-fbdev-devel@lists.sourceforge.net Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: Received: from sc8-sf-mx1-b.sourceforge.net ([10.3.1.11] helo=sc8-sf-mx1.sourceforge.net) by sc8-sf-list1.sourceforge.net with esmtp (Exim 4.30) id 1DLxH0-0000wa-JP for linux-fbdev-devel@lists.sourceforge.net; Wed, 13 Apr 2005 22:52:18 -0700 Received: from smtp-out.hotpop.com ([38.113.3.71]) by sc8-sf-mx1.sourceforge.net with esmtp (Exim 4.41) id 1DLxGz-0005RJ-5G for linux-fbdev-devel@lists.sourceforge.net; Wed, 13 Apr 2005 22:52:18 -0700 Received: from hotpop.com (kubrick.hotpop.com [38.113.3.103]) by smtp-out.hotpop.com (Postfix) with SMTP id 67D14152A737 for ; Thu, 14 Apr 2005 05:52:06 +0000 (UTC) In-Reply-To: <20050410172843.6366ef8a.akpm@osdl.org> Content-Disposition: inline Sender: linux-fbdev-devel-admin@lists.sourceforge.net Errors-To: linux-fbdev-devel-admin@lists.sourceforge.net List-Unsubscribe: , List-Id: List-Post: List-Help: List-Subscribe: , List-Archive: Content-Type: text/plain; charset="us-ascii" To: linux-fbdev-devel@lists.sourceforge.net, Andrew Morton Cc: klug@blarg.org On Monday 11 April 2005 08:28, Andrew Morton wrote: > Previous to my 2.6.11.6 upgrade I was running 2.6.9. With all unpatched 2.6 > kernel versions up to and including 2.6.9, I could turn the lcd backlight > off by running "echo lcd_out:0 > /proc/acpi/toshiba/video" as root. I > upgraded directly from 2.6.9 to 2.6.11.6. With the upgrade I am no longer > able to turn the lcd backlight off. There is no effect after running "echo > lcd_out:0 > > /proc/acpi/toshiba/video" and the /proc/acpi/toshiba/video lcd_out option Looks more like an acpi problem than fbdev/backlight. > remains unchanged as 1. I recompiled the 2.6.11.6 kernel with the new > option CONFIG_BACKLIGHT_LCD_SUPPORT=y. Enabling this option did not allow Does not matter as intelfb does not use the backlight/lcd architecture yet. Tony ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click