From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bjorn Helgaas Subject: Re: HP/Compaq NC6120 ACPI problems Date: Thu, 17 Mar 2005 12:48:24 -0700 Message-ID: <1111088904.11380.36.camel@eeyore> References: <20050317200052.686d683f.andrej.prsa@guest.arnes.si> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit In-Reply-To: <20050317200052.686d683f.andrej.prsa-zs/Xt9NzJtxxh+DGd0HQrg@public.gmane.org> Sender: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org Errors-To: acpi-devel-admin-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , List-Archive: To: Andrej Prsa Cc: ACPI Support List-Id: linux-acpi@vger.kernel.org On Thu, 2005-03-17 at 20:00 +0100, Andrej Prsa wrote: > The symptoms are as follows: computer starts fine, but within 20-30 > seconds it gradually slows down to the point where it can no longer be > used - it takes 5 minutes to start the terminal. The fan doesn't work, > so the machine overheats. Using 'top' shows that 55% of CPU power is > consumed by kacpid. Take a look at /proc/interrupts a couple times, and see if there's a device that's spewing interrupts. > A totally unreliable and probably a misleading thought is that > PCI interrupts are messed up without ACPI; this assumption is based > on the fact that the system hangs prior to the statement: > > ACPI: PCI interrupt 0000:02:06.2[C] -> GSI 22 (level, low) -> IRQ 217 > > in dmesg (which occurs if ACPI is left on). When ACPI is turned off, > the fan works normally and there is no overheating whatsoever. Try booting with "pci=routeirq". If that makes a difference, please post the dmesg log and output of "lspci". If you can also capture the dmesg log without "pci=routeirq", that would also be useful. > I also tried recompiling the 2.6.11.4 kernel and fiddling with > ACPI settings, but the result is kernel panic with VFS related problem > (although I created ramdisk by hand and I'm sure everything else is ok). You can avoid the hassle of a ramdisk by building the drivers and filesystems you need static (instead of as modules). Bjorn ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://ads.osdn.com/?ad_id=6595&alloc_id=14396&op=click