apport information ** Tags added: apport-collected resolute
** Description changed: Environment: Hardware: Raspberry Pi 5 Model B Rev 1.0 (8GB RAM) Ubuntu Release: Ubuntu 26.04 LTS Kernel: 7.0.0-1017-raspi (arm64) Summary: On Raspberry Pi 5 hardware, the Raspberry Pi bootloader/EEPROM firmware dynamically prepends hardware-tuning parameters to /proc/cmdline at boot time, including numa=fake=8 and numa_policy=interleave. While Raspberry Pi OS's vendor kernel carries a downstream patch adding fake NUMA support to ARM64 for the BCM2712, Ubuntu's linux-raspi kernel does not recognise numa=fake=8 on ARM64. Consequently, every boot on a Raspberry Pi 5 emits an early boot error: [ 0.000000] Malformed early option 'numa' Steps to reproduce: flash standard ubu26.04 on raspberry pi5, boot the board and run dmesg Observed results: [ 0.000000] Booting Linux on physical CPU 0x0000000000 [0x414fd0b1] [ 0.000000] Linux version 7.0.0-1017-raspi (buildd@bos03-arm64-107) ... [ 0.000000] Machine model: Raspberry Pi 5 Model B Rev 1.0 [ 0.000000] Malformed early option 'numa' Catting /proc/cmdline reboot=w coherent_pool=1M 8250.nr_uarts=1 pci=pcie_bus_safe numa_policy=interleave nvme.max_host_mem_size_mb=0 numa=fake=8 system_heap.max_order=0 iommu_dma_numa_policy=interleave smsc95xx.macaddr=... Expected behavior: (Preferred): The Ubuntu linux-raspi kernel cherry-picks the Raspberry Pi Foundation's fake NUMA patch for BCM2712 so memory interleaving works as intended on Pi 5. (Alternative): The numa=fake=X option is handled/ignored cleanly without logging an error on official certified hardware. + --- + ProblemType: Bug + ApportVersion: 2.34.1-0ubuntu0.1 + Architecture: arm64 + AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: + CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found. + CasperMD5CheckResult: unknown + CloudArchitecture: aarch64 + CloudID: nocloud + CloudName: unknown + CloudPlatform: nocloud + CloudSubPlatform: config-disk (/dev/nvme0n1p1) + CurrentDmesg: Error: command ['dmesg'] failed with exit code 1: dmesg: read kernel buffer failed: Operation not permitted + DistroRelease: Ubuntu 26.04 + Lspci-vt: + -[0001:00]---00.0-[01]----00.0 Samsung Electronics Co Ltd NVMe SSD Controller 980 (DRAM-less) + -[0002:00]---00.0-[01]----00.0 Raspberry Pi Ltd RP1 PCIe 2.0 South Bridge + Lsusb: + Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub + Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub + Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub + Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub + Bus 005 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub + Lsusb-t: + /: Bus 001.Port 001: Dev 001, Class=root_hub, Driver=dwc2/1p, 480M + /: Bus 002.Port 001: Dev 001, Class=root_hub, Driver=xhci-hcd/2p, 480M + /: Bus 003.Port 001: Dev 001, Class=root_hub, Driver=xhci-hcd/1p, 5000M + /: Bus 004.Port 001: Dev 001, Class=root_hub, Driver=xhci-hcd/2p, 480M + /: Bus 005.Port 001: Dev 001, Class=root_hub, Driver=xhci-hcd/1p, 5000M + Package: linux-raspi 7.0.0-1017.17 + PackageArchitecture: arm64 + ProcEnviron: + LANG=C.UTF-8 + PATH=(custom, no user) + SHELL=/bin/bash + TERM=xterm-256color + XDG_RUNTIME_DIR=<set> + ProcFB: + + ProcKernelCmdLine: reboot=w coherent_pool=1M 8250.nr_uarts=1 pci=pcie_bus_safe numa_policy=interleave nvme.max_host_mem_size_mb=0 numa=fake=8 system_heap.max_order=0 iommu_dma_numa_policy=interleave smsc95xx.macaddr=D8:3A:DD:B2:EF:3F vc_mem.mem_base=0x3fc00000 vc_mem.mem_size=0x40000000 console=ttyAMA0,115200 multipath=off console=tty1 root=LABEL=writable rootfstype=ext4 rootwait fixrtc nvme.max_host_mem_size_mb=16 + ProcVersionSignature: User Name 7.0.0-1017.17-raspi 7.0.12 + RfKill: Error: [Errno 2] No such file or directory: 'rfkill' + Tags: resolute + Uname: Linux 7.0.0-1017-raspi aarch64 + UpgradeStatus: Upgraded to resolute on 2026-04-23 (134 days ago) + UserGroups: adm cdrom dip lxd sudo + _MarkForUpload: True + acpidump: ** Attachment added: "AlsaInfo.txt" https://bugs.launchpad.net/bugs/2166421/+attachment/5997490/+files/AlsaInfo.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2166421 Title: Malformed early option 'numa' passed in numa=fake=8 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-raspi/+bug/2166421/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
