elhoir, if its actually true you personally were able to boot using the RX470 without WORKAROUNDs, its possible that either when you are installing older kernels you aren't installing the correct packages, or you were mistaken and it only booted either with a WORKAROUND or when a different graphics card was installed.
Unless the above may be confirmed, one is at the mercy of whomever has your hardware to confirm a regression. ** Changed in: linux (Ubuntu) Status: Incomplete => Triaged ** Tags removed: regression-update ** Tags added: regression-potential -- 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/1818580 Title: [Medion MS-7616] [drm:amdgpu_init [amdgpu]] *ERROR* VGACON disables amdgpu kernel modesetting. Status in linux package in Ubuntu: Triaged Bug description: I cannot boot PC normally, i must use recovery mode. Full dmesg after modprobe'ing amdgpu demonstrating call trace and lead up: https://launchpadlibrarian.net/414079136/complete-dmesg-after-modprobe-amdgpu.txt WORKAROUND: Use kernel parameter: nomodeset OR: modprobe.blacklist=amdgpu ProblemType: Bug DistroRelease: Ubuntu 19.04 Package: xserver-xorg-video-amdgpu 18.1.99+git20190207-1 ProcVersionSignature: Ubuntu 5.0.0-7.8-lowlatency 5.0.0 Uname: Linux 5.0.0-7-lowlatency x86_64 .tmp.unity_support_test.1: ApportVersion: 2.20.10-0ubuntu21 Architecture: amd64 CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins' CompositorRunning: None CurrentDesktop: XFCE Date: Tue Mar 5 00:59:48 2019 DistUpgraded: 2019-02-07 01:41:15,390 DEBUG Running PostInstallScript: './xorg_fix_proprietary.py' DistroCodename: disco DistroVariant: ubuntu GraphicsCard: Advanced Micro Devices, Inc. [AMD/ATI] Ellesmere [Radeon RX 470/480/570/570X/580/580X] [1002:67df] (rev cf) (prog-if 00 [VGA controller]) Subsystem: PC Partner Limited / Sapphire Technology Ellesmere [Radeon RX 470/480/570/570X/580/580X/590] [174b:353e] InstallationDate: Installed on 2012-02-27 (2562 days ago) InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012) MachineType: MEDIONPC MS-7616 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.0.0-7-lowlatency root=UUID=cded073e-f845-4947-970b-f8a4290c4c2b ro quiet splash acpi_osi=Linux nomodeset crashkernel=384M-:128M crashkernel=384M-2G:128M,2G-:256M crashkernel=512M-:192M vt.handoff=1 SourcePackage: xserver-xorg-video-amdgpu UpgradeStatus: Upgraded to disco on 2019-02-07 (25 days ago) dmi.bios.date: 01/15/2010 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: A7616MLN.10F dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: MS-7616 dmi.board.vendor: MEDIONPC dmi.board.version: 1.0 dmi.chassis.type: 3 dmi.chassis.vendor: MEDIONPC dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrA7616MLN.10F:bd01/15/2010:svnMEDIONPC:pnMS-7616:pvr1.0:rvnMEDIONPC:rnMS-7616:rvr1.0:cvnMEDIONPC:ct3:cvr: dmi.product.family: To Be Filled By O.E.M. dmi.product.name: MS-7616 dmi.product.sku: To Be Filled By O.E.M. dmi.product.version: 1.0 dmi.sys.vendor: MEDIONPC version.compiz: compiz 1:0.9.14.0+19.04.20190219-0ubuntu1 version.libdrm2: libdrm2 2.4.97-1 version.libgl1-mesa-dri: libgl1-mesa-dri 18.3.4-1ubuntu1 version.libgl1-mesa-glx: libgl1-mesa-glx 18.3.4-1ubuntu1 version.xserver-xorg-core: xserver-xorg-core 2:1.20.3-1ubuntu1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.1.99+git20190207-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20180925-2 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1818580/+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