Am Dienstag 09 August 2011, 07:32:34 schrieb meino.cra...@gmx.de: > Hi, > > my PC consists -- beside other things -- of a AMD Phenom II X6 1090T, > a ASUS Crossfire Formula IV and a NVidia GeForce GT 430 by MSI (PCIe). > Furthermore I am using the vanilla Linux kernel 3.0.1. . > > I browsed through the output of dmesg and found these lines: > > Checking aperture... > No AGP bridge found > Node 0: aperture @ c4000000 size 32 MB > Aperture pointing to e820 RAM. Ignoring. > Your BIOS doesn't leave a aperture memory hole > Please enable the IOMMU option in the BIOS setup > This costs you 64 MB of RAM > Mapping aperture over 65536 KB of RAM @ c4000000 > > The kernel is not configured with any AGP-related (as far as I now) > feature/config. > > Why does it look for an AGP-bridge??? > > The dmesg says I should switch on IOMMU, which I did. But that does > not impress the kernel that much since it still recommends to switch > on IOMMU. > > What did I wrong here ? > > I want to fix issues, which may be reported by dmesg, so: > Where can I find explanations to the dmesg output? > > For your information I attached the compressed dmesg output > to this mail. > > Thank you very much for your help in advance! > Best regards > mcc
see also this: http://marc.info/?l=linux-kernel&m=107764033904042&w=2 -- #163933
