From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752594Ab1KSPo3 (ORCPT ); Sat, 19 Nov 2011 10:44:29 -0500 Received: from out2.smtp.messagingengine.com ([66.111.4.26]:36365 "EHLO out2.smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751555Ab1KSPo1 (ORCPT ); Sat, 19 Nov 2011 10:44:27 -0500 X-Sasl-enc: BmZR/mIlYhlNIUiRh/PWAuywSue2MZ6jrGtLzO9VALY5 1321717466 Date: Sat, 19 Nov 2011 13:44:23 -0200 From: Henrique de Moraes Holschuh To: =?utf-8?B?5bCP6b6ZIOmZiA==?= Cc: linux-kernel@vger.kernel.org Subject: Re: thinkpad_acpi does not generate correct ACPI events when brightness_enable=0 Message-ID: <20111119154423.GA11743@khazad-dum.debian.net> References: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: X-GPG-Fingerprint: 1024D/1CDB0FE3 5422 5C61 F6B7 06FB 7E04 3738 EE25 DE3F 1CDB 0FE3 User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, 19 Nov 2011, 小龙 陈 wrote: >   rmmod thinkpad_acpi  modprobe thinkpad_acpi brightness_enable=0 > The "acpi_listen" command shows this following when either the brightness up orbrightness down button is pressed: >   ibm/hotkey LEN0068:00 00000080 00006050 This is an auxiliary event, only available in certain Lenovo boxes, and thinkpad-acpi doesn't do much with it. > and also the following when the brightness up button is pressed: >   video/brightnessup BRTUP 00000086 00000000 > The following brightness down ACPI event is only generated after the module isreloaded: >   video/brightnessdown BRTDN 00000087 00000000 > Is this a known bug (or even a bug at all)? The kernel bugzilla is down. It is probably a bug, yes. But where? You're looking at acpi video output, not thinkpad-acpi output. The ACPI firmware clearly is changing its behaviour when thinkpad-acpi is reloaded, which probably means it is broken and it will have to be worked around if a BIOS update doesn't fix it. That wouldn't be surprising at all... Are you using the latest BIOS/EC firmware for your thinkpad? -- "One disk to rule them all, One disk to find them. One disk to bring them all and in the darkness grind them. In the Land of Redmond where the shadows lie." -- The Silicon Valley Tarot Henrique Holschuh