AaronMa,
This is the iommu debug: [ 0.000000] AMD-Vi: Using IVHD type 0x11 [ 0.000000] AMD-Vi: device: 00:00.2 cap: 0040 seg: 0 flags: b0 info 0000 [ 0.000000] AMD-Vi: mmio-addr: 00000000fd900000 [ 0.000000] AMD-Vi: DEV_SELECT_RANGE_START devid: 00:01.0 flags: 00 [ 0.000000] AMD-Vi: DEV_RANGE_END devid: ff:1f.6 [ 0.000000] AMD-Vi: DEV_ALIAS_RANGE devid: ff:00.0 flags: 00 devid_to: 00:14.4 [ 0.000000] AMD-Vi: DEV_RANGE_END devid: ff:1f.7 [ 0.000000] AMD-Vi: DEV_SPECIAL(HPET[0]) devid: 00:14.0 [ 0.000000] AMD-Vi: DEV_SPECIAL(IOAPIC[33]) devid: 00:14.0 [ 0.000000] AMD-Vi: DEV_SPECIAL(IOAPIC[34]) devid: 00:00.1 [ 0.000000] [Firmware Bug]: AMD-Vi: No southbridge IOAPIC found I will give you the correct iommu "addresses" after dinner :). -- 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 ACPI failure on Ubuntu 18.04, kernel hangs, can't load, kernel freeze (AMD Ryzen 5/Radeon/Raven) 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
