From mboxrd@z Thu Jan 1 00:00:00 1970 From: KIV Subject: Problem with samsung_laptop module Date: Sun, 24 Jun 2012 22:40:25 +0400 Message-ID: <1340563225.13498.4.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-ey0-f174.google.com ([209.85.215.174]:51352 "EHLO mail-ey0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752375Ab2FXSkb (ORCPT ); Sun, 24 Jun 2012 14:40:31 -0400 Received: by eaak11 with SMTP id k11so979702eaa.19 for ; Sun, 24 Jun 2012 11:40:30 -0700 (PDT) Sender: platform-driver-x86-owner@vger.kernel.org List-ID: To: platform-driver-x86@vger.kernel.org I use the kernel module samsung_laptop for laptop Samsung 300V4A-A05. Because of this, the module brightness control does not work properly - it is only possible to decrease brightness but not increase. By editing the source code of the module revealed that all the blame "workaround for brightness stepping quirk". It is activated on my system, but if it is commented out everything starts to work as needed. I offer the option to enter the kernel boot command line, which would be forced to cut off this vorkarud or correct the error. Sorry for my bad English.