Created attachment 500192 [details] dmesg output Description of problem: Storage conflict booting Fedora-15-Beta-i686-Live-KDE.iso . Version-Release number of selected component (if applicable): kernel-2.6.38.2-9.fc15.i686 How reproducible: Always Steps to Reproduce: 1. Boot aforementioned CD. 2. 3. Actual results: 2 storage conflict messages in dmesg output (line numbers added): 243:[ 0.074060] pci_root PNP0A08:00: address space collision: host bridge window [mem 0x000cc000-0x000cffff] conflicts with Video ROM [mem 0x000c0000-0x000cebff] 892:[ 47.776072] ACPI: resource piix4_smbus [io 0x0b00-0x0b07] conflicts with ACPI region SMBI [io 0xb00-0xb0f] ~ Expected results: no messages Additional info: dmesg output as attachment
Created attachment 500194 [details] dmesg on Toshiba NB555D
Hi, I had the same issue on my macbook, I came accross this link: http://wiki.alpinelinux.org/wiki/Error_message_on_boot:_Address_space_collision:_host_bridge_window_conflicts_with_Adaptor_ROM Essentialy the fix is to append pci=nocrs to your kernel boot paramaters. It worked for me.
Using "pci=nocrs" is only a workaround and shouldn't be considered a fix. The host bridge window conflict error message should not cause a functional problem and can be ignored. I plan to reduce to a KERN_INFO message. I don't see the "ACPI: resource piix4_smbus [io 0x0b00-0x0b07] conflicts with ACPI region SMBI [io 0xb00-0xb0f]" message in the attached dmesg. It's not related to the host bridge window message.
*** This bug has been marked as a duplicate of bug 729652 ***