From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Rafael J. Wysocki" Subject: Re: ASUS PU551LD, fan stuck at full speed after waking up from S3 Date: Sat, 30 May 2015 14:14:06 +0200 Message-ID: <4235637.TmQrMxa1o1@vostro.rjw.lan> References: <1949840.6Csghk90X0@sakuya> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7Bit Return-path: Received: from v094114.home.net.pl ([79.96.170.134]:52798 "HELO v094114.home.net.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1757639AbbE3Lsc (ORCPT ); Sat, 30 May 2015 07:48:32 -0400 In-Reply-To: <1949840.6Csghk90X0@sakuya> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Martin Herkt Cc: linux-acpi@vger.kernel.org, platform-driver-x86@vger.kernel.org, acpi4asus-user@lists.sourceforge.net, linux-pm@vger.kernel.org On Friday, May 29, 2015 01:51:57 PM Martin Herkt wrote: > My ASUS PU551LD laptop has a problem with its fan state when resuming from S3. > In particular, the fan goes to full speed a second or two after waking up and > cannot be reset without turning off the laptop. For example, rebooting to > Windows and doing a suspend/resume cycle while the fan is in bad state will > not reset it. I have observed this behavior with all kernel versions I have > used on this laptop (oldest being 3.16, newest 4.1-rc5). > > sensors(1) does not show any fans, but asus-nb-wmi exposes > /sys/class/hwmon/hwmon2/pwm1, which shows values like 85 during normal > operation but goes to the expected 255 when the fan is running at full speed > after waking up from S3. Can you please check if applying the patch at https://patchwork.kernel.org/patch/6451241/ on top of 4.1-rc5 makes any difference? -- I speak only for myself. Rafael J. Wysocki, Intel Open Source Technology Center.