I had a similar issue this morning on an Asus Zenbook S16, but I don't think my issue was hardware specific. The update failed with errors like this:
Building initial module for 6.14.11-061411-generic ERROR (dkms apport): kernel package linux-headers-6.14.11-061411-generic is not supported Error! Bad return status for module build on kernel: 6.14.11-061411-generic (x86_64) Consult /var/lib/dkms/amdgpu/6.14.14-2226257.24.04/build/make.log for more information. dpkg: error processing package amdgpu-dkms (--configure): installed amdgpu-dkms package post-installation script subprocess returned error exit status 10 Errors were encountered while processing: amdgpu-dkms E: Sub-process /usr/bin/dpkg returned an error code (1) I have experimental and/or unused extra kernels installed, and this error showed for several of them (6.14.11 generic, as well as 6.17 and 6.11 flavors). Simply uninstalling those kernels so it didn't try to build for them, and rerunning amdgpu-install solved the problem for me. Unsupported kernels, I suppose? I have 6.14.1013-oem and 6.14.1014-oem installed and working currently, running 1014. Kevin On Wed, Oct 22, 2025 at 9:10 AM Mario Limonciello < [email protected]> wrote: > -13 is booted with nomodeset. This means amdgpu isn't loading. > > -- > You received this bug notification because you are a member of AMD, > which is subscribed to the bug report. > https://bugs.launchpad.net/bugs/2128883 > > Title: > linux-firmware 20240318.git3b128b60-0ubuntu2.19 causes black screen on > login with dual 4K monitors at 200% scaling on Wayland (AMD GPU) > > Status in linux-firmware package in Ubuntu: > Confirmed > > Bug description: > Summary: > After automatic update from linux-firmware version .17 to .19 on October > 17, 2025, Ubuntu 24.04 displays black screen on login when using dual LG > ULTRAFINE 4K monitors with 200% fractional scaling on Wayland. The issue > specifically occurs when GNOME/GDM attempts to initialize displays at 200% > scaling during boot. > > Hardware: > - CPU: AMD Ryzen 16-core > - GPU: AMD (integrated graphics) > - Monitors: 2x LG ULTRAFINE 4K (3840x2160) via DisplayPort > - Display Server: Wayland > - Desktop: GNOME > > Steps to Reproduce: > 1. Have dual 4K monitors configured at 200% fractional scaling > 2. Update linux-firmware from .17 to .19 > 3. Save display configuration at 200% scaling > 4. Reboot > 5. Attempt to login > > Expected Result: > Desktop should load normally with both monitors displaying correctly at > 200% scaling > > Actual Result: > Black screen after login when monitors.xml contains 200% scaling > configuration > > Key Diagnostic Findings: > - Deleting ~/.config/monitors.xml allows login at 100% default scaling > - Changing to 200% scaling AFTER login works perfectly > - Problem only occurs when GDM/GNOME loads 200% scaling during boot > initialization > - Rebooting after setting 200% recreates the black screen issue > - This is a boot-time initialization bug, not a runtime scaling bug > > Workaround: > Deleting ~/.config/monitors.xml before each login allows access, but > requires manual reconfiguration to 200% each session (unsustainable for > daily use) > > Fix: > Downgrading to linux-firmware=20240318.git3b128b60-0ubuntu2.17 resolves > the issue completely. All scaling levels work correctly with firmware .17. > > Additional Information: > - Wayland is required for this hardware setup (X11 has display issues > with dual 4K monitors even on firmware .17) > - Single monitor configuration was not tested > - Issue appeared immediately after firmware update on Oct 17, 2025 > - Firmware .17 works perfectly with Wayland + dual 4K + 200% scaling at > all times (boot and runtime) > - Bug is specific to boot-time display initialization with 200% > fractional scaling in firmware .19 > > System Information: > - Ubuntu Version: 24.04.3 LTS > - linux-firmware installed: 20240318.git3b128b60-0ubuntu2.17 (working - > currently held) > - linux-firmware candidate: 20240318.git3b128b60-0ubuntu2.19 (broken - > causes black screen) > > ProblemType: Bug > DistroRelease: Ubuntu 24.04 > Package: linux-firmware 20240318.git3b128b60-0ubuntu2.17 > ProcVersionSignature: Ubuntu 6.14.0-33.33~24.04.1-generic 6.14.11 > Uname: Linux 6.14.0-33-generic x86_64 > ApportVersion: 2.28.1-0ubuntu3.8 > Architecture: amd64 > AudioDevicesInUse: > USER PID ACCESS COMMAND > /dev/snd/controlC1: joe 2802 F.... wireplumber > /dev/snd/controlC0: joe 2802 F.... wireplumber > /dev/snd/seq: joe 2797 F.... pipewire > CRDA: N/A > CasperMD5CheckResult: pass > CurrentDesktop: ubuntu:GNOME > Date: Sat Oct 18 10:25:24 2025 > Dependencies: firmware-sof-signed 2023.12.1-1ubuntu1.10 > InstallationDate: Installed on 2025-10-15 (3 days ago) > InstallationMedia: Ubuntu 24.04.3 LTS "Noble Numbat" - Release amd64 > (20250805.1) > MachineType: ASUS System Product Name > ProcEnviron: > LANG=en_US.UTF-8 > PATH=(custom, no user) > SHELL=/bin/bash > TERM=xterm-256color > XDG_RUNTIME_DIR=<set> > ProcFB: 0 amdgpudrmfb > ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-6.14.0-33-generic > root=UUID=50126da2-dd87-4955-8708-1ecb4482ba78 ro quiet splash > RelatedPackageVersions: > linux-restricted-modules-6.14.0-33-generic N/A > linux-backports-modules-6.14.0-33-generic N/A > linux-firmware > 20240318.git3b128b60-0ubuntu2.17 > RfKill: > 0: phy0: Wireless LAN > Soft blocked: no > Hard blocked: no > SourcePackage: linux-firmware > UpgradeStatus: No upgrade log present (probably fresh install) > acpidump: Error: command ['pkexec', > '/usr/share/apport/dump_acpi_tables.py'] failed with exit code 126: Error > executing command as another user: Request dismissed > dmi.bios.date: 07/14/2025 > dmi.bios.release: 10.78 > dmi.bios.vendor: American Megatrends Inc. > dmi.bios.version: 1078 > dmi.board.asset.tag: Default string > dmi.board.name: ROG STRIX B850-A GAMING WIFI > 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.:bvr1078:bd07/14/2025:br10.78:svnASUS:pnSystemProductName:pvrSystemVersion:rvnASUSTeKCOMPUTERINC.:rnROGSTRIXB850-AGAMINGWIFI: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 > > To manage notifications about this bug go to: > > https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/2128883/+subscriptions > > -- [image: Canonical-20th-anniversary] Kevin Cazabon Silicon Alliances Ecosystem Development Manager Email: [email protected] Location: United States (EST) Mobile: +1 585.301.7412 canonical.com ubuntu.com -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2128883 Title: linux-firmware 20240318.git3b128b60-0ubuntu2.19 causes black screen on login with dual 4K monitors at 200% scaling on Wayland (AMD GPU) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/2128883/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
