DMAR DMA Remapping Reporting is ACPI table defined in "IntelĀ® Virtualization Technology for Directed I/O" which says "The system BIOS is responsible for detecting the remapping hardware functions in the platform and for locating the memory-mapped remapping hardware registers in the host system address space."
It is clearly that this system reports the base address is zero which is invalid. In fact, it claims the base address starts from 0 and it will conflicts with other hardware. It is my guess that BIOS set base address to zero as this is a celeron cpu which does not support this advance. This is not a correct way to do it. BIOS should not report DMAR in ACPI at all. Fortunately, it is detected by kernel and DMAR is not used. ** Changed in: linux-lts-raring (Ubuntu) Status: New => Won't Fix -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1251570 Title: [Dell Inspiron 3137] WARNING message in klog (reported as HIGH failure in fwts) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-lts-raring/+bug/1251570/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs