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 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. 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 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1876835/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp