From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750849AbVIVEAV (ORCPT ); Thu, 22 Sep 2005 00:00:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750842AbVIVEAV (ORCPT ); Thu, 22 Sep 2005 00:00:21 -0400 Received: from smtp114.sbc.mail.re2.yahoo.com ([68.142.229.91]:22173 "HELO smtp114.sbc.mail.re2.yahoo.com") by vger.kernel.org with SMTP id S1750813AbVIVEAU (ORCPT ); Thu, 22 Sep 2005 00:00:20 -0400 From: Dmitry Torokhov To: linux-kernel@vger.kernel.org Subject: Re: 2.5.14-rc1-mm1.5 - keyboard wierdness Date: Wed, 21 Sep 2005 23:00:17 -0500 User-Agent: KMail/1.8.2 Cc: Valdis.Kletnieks@vt.edu References: <200509220335.j8M3ZGEJ004230@turing-police.cc.vt.edu> In-Reply-To: <200509220335.j8M3ZGEJ004230@turing-police.cc.vt.edu> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200509212300.17740.dtor_core@ameritech.net> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wednesday 21 September 2005 22:35, Valdis.Kletnieks@vt.edu wrote: > I've had this happen twice now, running Andrew's "not quite -mm2" patch. > > Symptoms: After about 20-30 minutes uptime, a running gkrellm shows system mode > suddenly shoot up to 99-100%, and the keyboard dies. Oddly enough, a USB mouse > continued working, and the X server was still quite responsive (I was able to > close Firefox by opening a menu with the mouse and selecting 'quit', for > example). > > alt-sysrq-foo still worked, but ctl-alt-N to switch virtual consoles didn't. > sysrq-t produced a trace with nothing obviously odd - klogd, syslog, and the > disk were all working. > > Nothing interesting in the syslog - no oops, bug, etc.. > > Another odd data point (I didn't notice if this part happened the first time): > gkrellm reported that link ppp0 had inbound packets on the modem port of a > Xircom ethernet/modem combo card. At the rate of 3.5M/second - a neat trick > for a 56K modem. When I unplugged the RJ-11, gkrellm *kept* reporting the > inbound traffic. When I ejected the card, *then* the ppp0 (and the alleged > inbound packets) stopped - but still sitting at 99% system and no keyboard. > > This ring any bells? Any suggestions for instrumentation to help debug this? > I have seen this couple of times when I would eject my prism54 card at a "bad" time - my card sometimes gets stuck (a known problem with some prism54 cards) and if I would eject it "too early" I would lose keyboard. So I wait till it complain: prism54: Your card/socket may be faulty, or IRQ line too busy :( and eject and insert it again and all is fine. -- Dmitry