Public bug reported:
On a Pi Zero 2 W
sudo flash-kernel
installs the wrong device tree files (bcm2712-rpi-5-b.dtb):
Using DTB: bcm2712-rpi-5-b.dtb
Installing
/lib/firmware/7.0.0-1014-raspi/device-tree/broadcom/bcm2712-rpi-5-b.dtb into
/boot/dtbs/7.0.0-1014-raspi/./bcm2712-rpi-5-b.dtb
/usr/sbin/flash-kernel: 576: .: cannot open /etc/default/flash-kernel: No such
file
/usr/sbin/flash-kernel: 585: .: cannot open /etc/default/flash-kernel: No such
file
Skipping backup of bcm2712-rpi-5-b.dtb.
Installing new bcm2712-rpi-5-b.dtb.
flash-kernel: installing version 7.0.0-1014-raspi
Copying kernel assets to /boot/firmware/new/
Copying boot firmware to /boot/firmware/new/
Copying device trees to /boot/firmware/new/
find: ‘/etc/flash-kernel/dtbs’: No such file or directory
Copying device tree overlays to /boot/firmware/new/overlays/
find: ‘/etc/flash-kernel/dtbs’: No such file or directory
Please be aware next reboot will boot twice
Consequently, rebooting into the new kernel fails.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: flash-kernel (not installed)
ProcVersionSignature: User Name 7.0.0-1009.9-raspi 7.0.0
Uname: Linux 7.0.0-1009-raspi aarch64
ApportVersion: 2.34.0-0ubuntu2
Architecture: arm64
CasperMD5CheckResult: unknown
Date: Sun Jul 12 14:16:24 2026
ImageMediaBuild: 20260423.1
SourcePackage: flash-kernel
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: flash-kernel (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug arm64 arm64-image raspi-image resolute
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https://bugs.launchpad.net/bugs/2160451
Title:
flash-kernel copies RPi5 dtb on Pi Zero 2
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