On 2/21/2013 12:43 PM, Robert Moskowitz wrote:
:[Firmware Warn]: Your BIOS is broken; DMAR reported at address fed90000 returns all ones!
I googled "Your BIOS is broken; DMAR reported at address fed90000 returns all ones!" and got some related results.
this bug report (on FC12) says... "yes, your bios is broken, but its not a bug, we worked around it" https://bugzilla.redhat.com/show_bug.cgi?id=896652
on a similar/identical bug with Fedora FC17, someone suggested booting with iommu=off to work around this.
on a similar debian bug report, it was stated that this error only happened when the BIOS setting for "VT-d" was enabled. VT-d is only used to virtualized complete IO cards (like, dedicating a specified PCI-Express device to a given VM rather than handling it in the host and virtualizing the logical device). If your BIOS has an option to turn VT-d off, you might try that.