booting distro kernel 4.8.0-52 with kernel parameter amd_iommu=off: boot time 1 minute and "boot finished" sound - just like upstream kernel 4.12-rc1 without amd_iommu parameter.
** Attachment added: "error and fail lines from dmesg distro kernel" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1639517/+attachment/4880375/+files/dmesg_error_distro_iommu.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1639517 Title: [HP Pavilion Notebook - 17-g164ng] black screen when booting To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1639517/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
