Hello again, in some other forums I found this:
"> iommu problem? Try it with mem=3G. YES! :-) How did you know? Even mem=4G did the trick." Problem: even with "mem=4GB" option, the kernel only sees 3GB of useable RAM. IOMMU seens to cause problems. dmesg W/O mem= option: [17180642.907074] Checking aperture... [17180642.907074] Node 0: aperture @ 4000000 size 32 MB [17180642.907074] Aperture pointing to e820 RAM. Ignoring. [17180642.907074] No AGP bridge found [17180642.907074] Your BIOS doesn't leave a aperture memory hole [17180642.907074] Please enable the IOMMU option in the BIOS setup [17180642.907074] This costs you 64 MB of RAM [17180642.907074] Mapping aperture over 65536 KB of RAM @ 4000000 [17180642.907074] PM: Registered nosave memory: 0000000004000000 - 0000000008000000 [17180642.907074] Memory: 3760952k/4980736k available (2489k kernel code, 169668k reserved, 1371k data, 344k init) ..... [17180643.205903] PCI-DMA: Disabling AGP. [17180643.205903] PCI-DMA: aperture base @ 4000000 size 65536 KB [17180643.205903] PCI-DMA: using GART IOMMU. [17180643.205903] PCI-DMA: Reserving 64MB of IOMMU area in the AGP aperture dmesg WITH mem=4GB option: [17180642.907074] Checking aperture... [17180642.907074] Node 0: aperture @ 4000000 size 32 MB [17180642.907074] Aperture pointing to e820 RAM. Ignoring. [17180642.907074] No AGP bridge found [17180642.907074] Memory: 3052376k/3144576k available (2489k kernel code, 91812k reserved, 1371k data, 344k init) *** and thats all regarding MMU and AGP *** -- Hardy -- Suspend RUINS FILESYSTEM https://bugs.launchpad.net/bugs/203537 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
