From mboxrd@z Thu Jan 1 00:00:00 1970 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933880AbeAJLpW (ORCPT + 1 other); Wed, 10 Jan 2018 06:45:22 -0500 Received: from smtp2.it.da.ut.ee ([193.40.5.67]:53807 "EHLO smtp2.it.da.ut.ee" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752403AbeAJLpU (ORCPT ); Wed, 10 Jan 2018 06:45:20 -0500 Date: Wed, 10 Jan 2018 13:45:16 +0200 (EET) From: Meelis Roos To: Linux Kernel list Subject: powersaving-related hangs on T460s Message-ID: 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. 4.14 with the same config (modulo any new config options) was working fine. Nothing in the log files afterwards. Network connection is WiFi. There is a USB mouse connected. Wat do I check next? -- Meelis Roos (mroos@linux.ee)