It started after upgrade from X to B. This may only show up on Tegra2, which does not have an IOMMU, and which creates problems if one is registered. Sorry, I don't understand the technical details. AFAICT, the whole driver is still broken in mainline kernel (since 3.20). An upstream fixed is currently proposed. See: https://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu.git/commit/?h=next&id=5c5c87411488af3cd082221e567498d813d0fe83
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1783746 Title: ipmmu is always registered To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1783746/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
