** Tags added: patch
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-signed in Ubuntu.
https://bugs.launchpad.net/bugs/1768162
Title:
kernel crashes during boot unless IOMMU is disabled on AMD Cpu
Status in linux-signed package in Ubuntu:
New
Bug description:
Previous
- IOMMU was enabled under Ubuntu 16.04 LTS Kernel 4.4 - No Issues
Current
- After upgrading to 18.04 with kernel 4.15 systems crashes with IOMMU
enabled
- Disabling IOMMU within the BIOS allow booting with 4.15 kernel
- Enabling IOMMU and switching to 4.4 boots fine as well under 18.04
Not Sure if this is the same as bug 1747463
Version Log
Ubuntu 4.15.0-20.21-generic 4.15.17
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-4.15.0-20-generic 4.15.0-20.21
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Mon Apr 30 20:05:32 2018
InstallationDate: Installed on 2015-06-11 (1054 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: linux-signed
UpgradeStatus: No upgrade log present (probably fresh install)
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