(In reply to Suravee Suthikulpanit from comment #204) > For IOMMU-related part, as mentioned above, the IVRS table does not list the > correct IOAPIC IDs. This would cause driver to disable interrupt-remapping > support provided by HW IOMMU. > Here the "ivrs_ioapic[4]=00:14.0 ivrs_ioapic[5]=00:00.2" boot option is > needed to override the table. Permanent solution would be for laptop OEMs > (e.g. Acer, Lenovo) to fix this in their BIOSes.
Is it possible to use DMI based quirk to override the tables? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1776563 Title: Acer Aspire A315 IOAPIC failure on Ubuntu 18.04, kernel hangs, can't load, kernel freeze (AMD Ryzen 5/Radeon/Raven) / AMDGPU Hybrid crash To manage notifications about this bug go to: https://bugs.launchpad.net/amd/+bug/1776563/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
