Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261849AbUKUXrJ (ORCPT ); Sun, 21 Nov 2004 18:47:09 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261882AbUKUXrJ (ORCPT ); Sun, 21 Nov 2004 18:47:09 -0500 Received: from smtp800.mail.sc5.yahoo.com ([66.163.168.179]:39074 "HELO smtp800.mail.sc5.yahoo.com") by vger.kernel.org with SMTP id S261869AbUKUXqV (ORCPT ); Sun, 21 Nov 2004 18:46:21 -0500 From: Dmitry Torokhov To: linux-kernel@vger.kernel.org Subject: Re: help: sysrq and X Date: Sun, 21 Nov 2004 18:46:17 -0500 User-Agent: KMail/1.6.2 Cc: Eyal Lebedinsky References: <41A122E0.8070307@eyal.emu.id.au> In-Reply-To: <41A122E0.8070307@eyal.emu.id.au> MIME-Version: 1.0 Content-Disposition: inline Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Message-Id: <200411211846.17628.dtor_core@ameritech.net> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 861 Lines: 21 On Sunday 21 November 2004 06:21 pm, Eyal Lebedinsky wrote: > I am trying to diagnose a hard lockup. The only way I can reproduce it is > with mythtv. When the system locks up (no mouse, no activity in X, no message > logged) I can use magic sysrq, but I cannot see the output. > > Using 'r' does not enable console switching. However 'b' will boot the > system, and I hope 's' and 'u' did something blindly. > > I there a way to regain a text console in order to inspect the kernel? > Try use SysRQ+K (SAK) - 95% when my X server locks up I can use SAK and then killall -9 X and everythig is fine. -- Dmitry - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/