From mboxrd@z Thu Jan 1 00:00:00 1970 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932068AbeAKHkD (ORCPT + 1 other); Thu, 11 Jan 2018 02:40:03 -0500 Received: from smtp2.it.da.ut.ee ([193.40.5.67]:49438 "EHLO smtp2.it.da.ut.ee" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751076AbeAKHkB (ORCPT ); Thu, 11 Jan 2018 02:40:01 -0500 Date: Thu, 11 Jan 2018 09:39:57 +0200 (EET) From: Meelis Roos To: Linux Kernel list Subject: Re: powersaving-related hangs on T460s In-Reply-To: Message-ID: References: User-Agent: Alpine 2.21 (LRH 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Return-Path: > I tried 4.15-git on my Thinkpad T460s laptop. It is working but I have > problems waking up the computer after it has been idle. > > There should be no suspend (to keep network connections alive) when the > laptop is on AC power, even when the lid is closed. In dmesg, I have > seen no indication of suspend happening. It is configured to just lock > the screen when the lid is closed. > > Normally, I have to press a key after opening the lid to unblank the > screen and get to password prompt. Usually this works but sometimes > there is no response - power LED is on that is all, holding down power > button is the only way out. > > Sometimes it happens overnight, sometimes it is alive in the morning. It > almost never happens with short 5-15 minutes breaks but it can happen > for about hour long breaks. There is no reliable way to reproduce the > problem. I seem to have found a better reproducer - when running on battery, it will hang after some minutes, with screen on. It just hangs. -- Meelis Roos (mroos@linux.ee)