Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261317AbVDMLZc (ORCPT ); Wed, 13 Apr 2005 07:25:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261318AbVDMLZc (ORCPT ); Wed, 13 Apr 2005 07:25:32 -0400 Received: from gprs189-60.eurotel.cz ([160.218.189.60]:45454 "EHLO amd.ucw.cz") by vger.kernel.org with ESMTP id S261317AbVDMLZO (ORCPT ); Wed, 13 Apr 2005 07:25:14 -0400 Date: Wed, 13 Apr 2005 13:24:52 +0200 From: Pavel Machek To: Andreas Steinmetz Cc: Linux Kernel Mailinglist , vojtech@suse.cz, dtor_core@ameritech.net, acpi-devel@lists.sourceforge.net Subject: Re: 2.6.11 acpi battery state readout as source of keyboard/touchpad troubles Message-ID: <20050413112452.GA21023@elf.ucw.cz> References: <424AF9C3.4000905@domdv.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <424AF9C3.4000905@domdv.de> X-Warning: Reading this can be dangerous to your mental health. User-Agent: Mutt/1.5.6+20040907i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1806 Lines: 43 Hi! > In traceing the source of my sporadic synaptics touchpad troubles > > psmouse.c: TouchPad at isa0060/serio4/input0 lost sync at byte 1 > psmouse.c: TouchPad at isa0060/serio4/input0 lost sync at byte 1 > psmouse.c: TouchPad at isa0060/serio4/input0 lost sync at byte 1 > psmouse.c: TouchPad at isa0060/serio4/input0 lost sync at byte 1 > psmouse.c: TouchPad at isa0060/serio4/input0 lost sync at byte 1 > psmouse.c: TouchPad at isa0060/serio4/input0 - driver resynched. > > and keyboard troubles (sporadically lost key up/down events) on an Acer > Aspire 1520 (x86_64, latest bios v1.09) I did enable the > report_lost_ticks option which did spit out stuff like the following at > regular intervals: > > time.c: Lost 17 timer tick(s)! rip handle_IRQ_event+0x20/0x60) > time.c: Lost 8 timer tick(s)! rip handle_IRQ_event+0x20/0x60) > time.c: Lost 19 timer tick(s)! rip handle_IRQ_event+0x20/0x60) > time.c: Lost 8 timer tick(s)! rip handle_IRQ_event+0x20/0x60) > time.c: Lost 18 timer tick(s)! rip handle_IRQ_event+0x20/0x60) > time.c: Lost 8 timer tick(s)! rip handle_IRQ_event+0x20/0x60) > > This looked suspiciously like it happended when the the kde laptop > applet polled the battery status. So I did terminate the applet. > > The result was no more lost ticks, no lost keyboard events and no more > lost touchpad sync. > > To verify ACPI battery data as the source of trouble i did a simple > > cat /proc/acpi/battery/BAT0/state ... CONFIG_ACPI_DEBUG enabled by chance? Pavel -- Boycott Kodak -- for their patent abuse against Java. - 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/