On Thu, Aug 18, 2005 at 03:52:13PM -0700, Sean Bruno wrote: > With earlier kernels(2.6.11) I was able to boot my machine with ACPI > enabled, but most devices(sound, onboard ethernet, SATA controllers, > USB) were unusuable but they were detected. I was able to work around > this issue by disabling ACPI in my system BIOS.
Keeping it on and using pci=noacpi might be better. > available. Since 2.6.12, when I re-activate ACPI in my system BIOS, I > can't boot my machine as it gives me an error about no IOMMU and having > 6GB of RAM. This error was not listed in the dmesg posted before as I > can't boot my machine past this error. > > Here is the exact output when booting 2.6.13 with ACPI enabled: > > Decompressing Linux ... Done > Booting the kernel > PCI-DMA: More that 4GB of RAM and no IOMMU > PCI-DMA: 32bit PCI IO may malfunction.<6>PCI-DMA: Disabling IOMMU This has nothing to do with ACPI. The problem here is that you didn't enable the IOMMU code in the kernel .config -Andi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/