Adding my output with the same issue in case it helps in investigation. Attached the output as requested by Daniel van Vugt.
** Attachment added: "Output of journalctl -b-1 > prev_boot.txt" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1799964/+attachment/5206089/+files/prev_boot.txt -- 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/1799964 Title: Ubuntu 18.10 After Blank Screen System Won't Come Back Status in linux package in Ubuntu: Confirmed Bug description: In Ubuntu 18.10 if the blank screen feature initiates (5 minutes default) the system will remain blank and there is no way to get the display back on without a hard reset. The video card I am using is a Vega 64. Other users who have Vega AMD GPU's are experiencing the same issue. This is only happening in Ubuntu 18.10. Does not occur in my Arch or Fedora installs. To reproduce: - Let 'Blank Screen' feature execute (5 min default) - Screen will not come back ProblemType: Bug DistroRelease: Ubuntu 18.10 Package: xorg 1:7.7+19ubuntu8 ProcVersionSignature: Ubuntu 4.18.0-10.11-generic 4.18.12 Uname: Linux 4.18.0-10-generic x86_64 ApportVersion: 2.20.10-0ubuntu13 Architecture: amd64 BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Thu Oct 25 10:18:59 2018 DistUpgraded: Fresh install DistroCodename: cosmic DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: Advanced Micro Devices, Inc. [AMD/ATI] Vega 10 XT [Radeon RX Vega 64] [1002:687f] (rev c1) (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. Vega 10 XT [Radeon RX Vega 64] [1043:04c4] InstallationDate: Installed on 2018-10-19 (6 days ago) InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.3) MachineType: Micro-Star International Co., Ltd. MS-7B78 ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-10-generic root=UUID=21c08187-f134-41b4-b8e5-93bead748c4f ro quiet splash SourcePackage: xorg Symptom: display UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/24/2018 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 2.20 dmi.board.asset.tag: To be filled by O.E.M. dmi.board.name: X470 GAMING PRO CARBON (MS-7B78) dmi.board.vendor: Micro-Star International Co., Ltd. dmi.board.version: 1.0 dmi.chassis.asset.tag: To be filled by O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: Micro-Star International Co., Ltd. dmi.chassis.version: 1.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr2.20:bd04/24/2018:svnMicro-StarInternationalCo.,Ltd.:pnMS-7B78:pvr1.0:rvnMicro-StarInternationalCo.,Ltd.:rnX470GAMINGPROCARBON(MS-7B78):rvr1.0:cvnMicro-StarInternationalCo.,Ltd.:ct3:cvr1.0: dmi.product.family: To be filled by O.E.M. dmi.product.name: MS-7B78 dmi.product.sku: To be filled by O.E.M. dmi.product.version: 1.0 dmi.sys.vendor: Micro-Star International Co., Ltd. version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.95-1 version.libgl1-mesa-dri: libgl1-mesa-dri 18.2.2-0ubuntu1 version.libgl1-mesa-glx: libgl1-mesa-glx 18.2.2-0ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.20.1-3ubuntu2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.1.0-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20171229-1ubuntu1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-3 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1799964/+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
