apport information ** Tags added: apport-collected
** Description changed: I have Ubuntu 18.04 on my system. When I boot, I get a black screen once mode switching happens. Rescue mode (aka nomodeswitch) would bring me to a gui screen correctly. I tried backing off to X.org from Wayland, but that didn't help. I eventually found an obscure post suggesting adding amdgpu.dc=0 to the command line. With this added, I have the GUI I expect. Originally the system worked as expected, but something changed which required this setting. The graphics card is an AMD RX480. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-generic-hwe-18.04 5.3.0.53.110 ProcVersionSignature: Ubuntu 5.3.0-53.47~18.04.1-generic 5.3.18 Uname: Linux 5.3.0-53-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.15 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Sat May 30 02:26:41 2020 InstallationDate: Installed on 2020-05-29 (0 days ago) InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: linux-meta-hwe UpgradeStatus: No upgrade log present (probably fresh install) + --- + ProblemType: Bug + ApportVersion: 2.20.9-0ubuntu7.15 + Architecture: amd64 + CurrentDesktop: ubuntu:GNOME + DistroRelease: Ubuntu 18.04 + InstallationDate: Installed on 2020-05-29 (11 days ago) + InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805) + Package: linux (not installed) + ProcEnviron: + TERM=xterm-256color + PATH=(custom, no user) + XDG_RUNTIME_DIR=<set> + LANG=en_US.UTF-8 + SHELL=/bin/bash + Tags: bionic + Uname: Linux 5.7.1-050701-generic x86_64 + UnreportableReason: The running kernel is not an Ubuntu kernel + UpgradeStatus: No upgrade log present (probably fresh install) + UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo + _MarkForUpload: True ** Attachment added: "ProcCpuinfoMinimal.txt" https://bugs.launchpad.net/bugs/1881390/+attachment/5382645/+files/ProcCpuinfoMinimal.txt ** Changed in: linux (Ubuntu) Status: Incomplete => Confirmed -- 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/1881390 Title: amdgpu.dc=0 required for gui display Status in linux package in Ubuntu: Confirmed Bug description: I have Ubuntu 18.04 on my system. When I boot, I get a black screen once mode switching happens. Rescue mode (aka nomodeswitch) would bring me to a gui screen correctly. I tried backing off to X.org from Wayland, but that didn't help. I eventually found an obscure post suggesting adding amdgpu.dc=0 to the command line. With this added, I have the GUI I expect. Originally the system worked as expected, but something changed which required this setting. The graphics card is an AMD RX480. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-generic-hwe-18.04 5.3.0.53.110 ProcVersionSignature: Ubuntu 5.3.0-53.47~18.04.1-generic 5.3.18 Uname: Linux 5.3.0-53-generic x86_64 ApportVersion: 2.20.9-0ubuntu7.15 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Sat May 30 02:26:41 2020 InstallationDate: Installed on 2020-05-29 (0 days ago) InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: linux-meta-hwe UpgradeStatus: No upgrade log present (probably fresh install) --- ProblemType: Bug ApportVersion: 2.20.9-0ubuntu7.15 Architecture: amd64 CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 18.04 InstallationDate: Installed on 2020-05-29 (11 days ago) InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805) Package: linux (not installed) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash Tags: bionic Uname: Linux 5.7.1-050701-generic x86_64 UnreportableReason: The running kernel is not an Ubuntu kernel UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo _MarkForUpload: True To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1881390/+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
