From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932298AbcKGPki (ORCPT ); Mon, 7 Nov 2016 10:40:38 -0500 Received: from relay2.sgi.com ([192.48.180.65]:60764 "EHLO relay.sgi.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753258AbcKGPkg (ORCPT ); Mon, 7 Nov 2016 10:40:36 -0500 Subject: Re: console issue since 3.6, console=ttyS1 hangs To: "Maciej W. Rozycki" , Peter Hurley References: <20161024135235.GA29984@gofer.mess.org> <20161024214925.GA143272@stormcage.americas.sgi.com> <20161025204139.GA22268@gofer.mess.org> <20161027201916.GA7718@gofer.mess.org> <20161031202706.GA10263@gofer.mess.org> <20161102152951.GA107664@stormcage.americas.sgi.com> <20161104213348.GA30383@stormcage.americas.sgi.com> CC: Sean Young , Linux kernel mailing list , "linux-serial@vger.kernel.org" , Greg Kroah-Hartman , Alan Cox , "Rafael J. Wysocki" From: Nathan Zimmer Message-ID: <93b11bd3-6ae1-f710-d151-748ce392d666@sgi.com> Date: Mon, 7 Nov 2016 09:40:32 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset="windows-1252"; format=flowed Content-Transfer-Encoding: 7bit X-Originating-IP: [128.162.233.176] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/05/2016 06:44 PM, Maciej W. Rozycki wrote: > On Fri, 4 Nov 2016, Peter Hurley wrote: > >>> These bios screens do not have any mention of PNP settings. >>> I am getting output over the console (via ipmi) until the boot hangs. >> Yeah, probably the device actually decodes io address access anyway, >> but in the disabled state probably has not routed IRQ. >> >> I have no idea how to help you with the bios, sorry. > I'd look out for serial port, Super-I/O or COM1 port (which is how PC-DOS > named the device some 35 years ago) settings rather than anything to do > with PNP. Typically you'd be able to choose from a few classic combined > I/O space address and IRQ assignments in addition to a `Disabled' setting. > > There might be a genuine BIOS bug there as well of course as serial ports > seem to be less used these days and the issue may have escaped validation. > > Maciej Given they hid some of the setting in the bios to keep these boxes uniform I will have to talk with the bios guys more about that. Last time they were certain it wasn't a big deal. Thanks, Nate