This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:
apport-collect 1876835
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1876835
Title:
[amdgpu] black screen before login on 5.4 kernel, but iommu=soft fixes
it
Status in linux package in Ubuntu:
Incomplete
Bug description:
Black screen after grub menu, selected kernel 5.4.0-29-generic and
can't login, have to shut down laptop by pressing power button, or Alt
+ SysRq + REISUB(O), and when those dont work a hard power off.
I have installed linux-signed-oem-5.6 and ppa.launchpad.net/oibaf
/graphics-drivers/ubuntu as a workaround the this problem
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: gdm3 3.34.1-1ubuntu1
ProcVersionSignature: Ubuntu 5.4.0-29.33-generic 5.4.30
Uname: Linux 5.4.0-29-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Tue May 5 01:25:40 2020
InstallationDate: Installed on 2020-05-03 (1 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
SourcePackage: gdm3
UpgradeStatus: No upgrade log present (probably fresh install)
mtime.conffile..etc.gdm3.custom.conf: 2020-05-04T14:16:57.900775
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