Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265073AbTFUChI (ORCPT ); Fri, 20 Jun 2003 22:37:08 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265071AbTFUChI (ORCPT ); Fri, 20 Jun 2003 22:37:08 -0400 Received: from unity.unh.edu ([132.177.137.40]:13453 "EHLO unity.unh.edu") by vger.kernel.org with ESMTP id S265070AbTFUChF (ORCPT ); Fri, 20 Jun 2003 22:37:05 -0400 Date: Fri, 20 Jun 2003 22:51:05 -0400 From: Samuel Thibault To: linux-kernel@vger.kernel.org, linux-laptop@vger.kernel.org Subject: Time freezing on Armada E500 Laptop Message-ID: <20030621025104.GA4906@bouh.unh.edu> Reply-To: Samuel Thibault Mail-Followup-To: linux-kernel@vger.kernel.org, linux-laptop@vger.kernel.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.4i-nntp X-MailScanner-Information: http://pubpages.unh.edu/notes/mailfiltering.html X-MailScanner: Found to be clean X-MailScanner-SpamCheck: not spam, SpamAssassin (score=-3.7, required 5, BAYES_30, USER_AGENT_MUTT) Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1523 Lines: 31 Hi, This has been happening for months since I bougth my laptop: it sometimes seems to be frozen, and merely pressing a key unfreezes it. Sending chars on serial port does as well, but the USB mouse does not. I had a closer look and realized that the only matter was the IRQ0 not being generated by the pit any more... So that jiffies wouldn't increase, hence any program based on time would indeed freeze while cpu burners would still run for instance. Fancy things being the window manager still working, but freezing on raising a window. The system clock goes round within ~5s. Remote shells still work of course, since network generates IRQs, but sshd is frozen :/. I tried 2.4 & 2.5, enabling / disabling APM, ACPI, speedstep, without any change. Flashing my bios to the latest version didn't add any option to the setup, it still only has a dozen, the only one related to power management being speedstep, which I tried to enable / disable as well. The Power Management program shipped by compaq for win95 won't run ("you need administrator rights", uh? on w95?) Just to be sure, Linux wouldn't ever disable IRQ0, would it? Could it on the other hand use other timers such as the rtc for detecting this trouble, and even use them as fallbacks? Regards, Samuel Thibault - 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/