Error message on boot: Address space collision: host bridge window conflicts with Adaptor ROM

From Alpine Linux
Revision as of 12:54, 24 January 2011 by Linker3000 (talk | contribs)

Adaptor ROM Conflicts

This information relates to error messages such as the one outlined in the page title and other similar ones - for example: 

pci_root PNP0A08:00: address space collision: host bridge window [mem
0x000cc000-0x000cffff] conflicts with Video ROM [mem 0x000c0000-0x000ce9ff]

This error occurs due to the way later 2.6 kernels enumerate adaptor ROMs and is not specific to Alpine Linux - see this kernel bug report. Typical symptoms are computers with multiple NICs not starting all adaptors reliably and issues with multi display/adaptor configurations.

To fix this issue, edit the syslinux.cfg boot file and add pci=nocrs to the parameters. On systems that boot from a USB memory stick, this file is /media/usb/syslinux.cfg

Example: 

timeout 20
prompt 1
default grsec
label grsec
	kernel /boot/grsec
	append pci=nocrs initrd=/boot/grsec.gz alpine_dev=usbdisk:vfat modules=loop,cramfs,sd-mod,usb-storage quiet
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