It looks like kernel 5.15 is only working because there's no graphics driver there that supports the GPU. So it's defaulting to legacy software rendering which kind of works... You can do the same in kernel 6.2 by using the kernel parameter "nomodeset".
** Package changed: xorg (Ubuntu) => linux-hwe-6.2 (Ubuntu) ** Bug watch added: gitlab.freedesktop.org/drm/amd/-/issues #2354 https://gitlab.freedesktop.org/drm/amd/-/issues/2354 ** Also affects: linux via https://gitlab.freedesktop.org/drm/amd/-/issues/2354 Importance: Unknown Status: Unknown ** Tags added: amdgpu -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-hwe-6.2 in Ubuntu. https://bugs.launchpad.net/bugs/2034088 Title: 4k white screen on kernel-6.20 with AMD7950x Status in Linux: Unknown Status in linux-hwe-6.2 package in Ubuntu: New Bug description: 1. AMD7950X, without any other gpu 2. 4k display 3. if kernel.version >= 6.14 => the 4k display white screen ps1: https://gitlab.freedesktop.org/drm/amd/-/issues/2354 ps2: this bug has occured long time ago, but amd never fix it, so i can not upgrade my ubuntu kernel version to default 6.20 for ubuntu 22.04 ProblemType: Bug DistroRelease: Ubuntu 22.04 Package: xorg 1:7.7+23ubuntu2 ProcVersionSignature: Ubuntu 5.15.0-83.92-generic 5.15.116 Uname: Linux 5.15.0-83-generic x86_64 ApportVersion: 2.20.11-0ubuntu82.5 Architecture: amd64 BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CasperMD5CheckResult: unknown CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Tue Sep 5 10:46:23 2023 DistroCodename: jammy DistroVariant: ubuntu ExtraDebuggingInterest: Yes, if not too technical GraphicsCard: Advanced Micro Devices, Inc. [AMD/ATI] Device [1002:164e] (rev c1) (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. Device [1043:8877] InstallationDate: Installed on 2023-07-31 (35 days ago) InstallationMedia: Ubuntu 20.04.6 LTS "Focal Fossa" - Release amd64 (20230316) MachineType: ASUS System Product Name ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.15.0-83-generic root=UUID=656f1bf0-3f83-44eb-9793-47a2aeaa819a ro quiet splash vt.handoff=7 SourcePackage: xorg Symptom: display UpgradeStatus: Upgraded to jammy on 2023-08-30 (5 days ago) dmi.bios.date: 07/28/2023 dmi.bios.release: 16.36 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 1636 dmi.board.asset.tag: Default string dmi.board.name: TUF GAMING B650M-PLUS dmi.board.vendor: ASUSTeK COMPUTER INC. dmi.board.version: Rev 1.xx dmi.chassis.asset.tag: Default string dmi.chassis.type: 3 dmi.chassis.vendor: Default string dmi.chassis.version: Default string dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr1636:bd07/28/2023:br16.36:svnASUS:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnTUFGAMINGB650M-PLUS:rvrRev1.xx:cvnDefaultstring:ct3:cvrDefaultstring:skuSKU: dmi.product.family: To be filled by O.E.M. dmi.product.name: System Product Name dmi.product.sku: SKU dmi.product.version: System Version dmi.sys.vendor: ASUS version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.113-2~ubuntu0.22.04.1 version.libgl1-mesa-dri: libgl1-mesa-dri 23.0.4-0ubuntu1~22.04.1 version.libgl1-mesa-glx: libgl1-mesa-glx N/A version.xserver-xorg-core: xserver-xorg-core 2:21.1.4-2ubuntu1.7~22.04.1 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-2ubuntu1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20210115-1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.17-2build1 To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/2034088/+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
