[Bug 2140442] [NEW] cp: cannot stat '/boot/firmware/current/cmdline.txt': No such file or directory

Andreas Hasenack 2140442 at bugs.launchpad.net
Wed Feb 4 19:03:30 UTC 2026 

Public bug reported:

This interrupted a release upgrade from plucky to questing on my pi4.
After dropping to a shell, "apt -f install" yields the same error, as
does just calling "flash-kernel":

root at pi4:~# apt -f install
The following packages were automatically installed and are no longer required:
  g++-14                     libboost-iostreams1.83.0        libclang-cpp18          libllvm19            libxml2                          linux-raspi-tools-6.14.0-1018
  g++-14-aarch64-linux-gnu   libboost-locale1.83.0           libclang1-19            libreiserfscore0t64  linux-headers-6.14.0-1018-raspi  linux-tools-6.14.0-1018-raspi
  gir1.2-nautilus-4.0        libboost-program-options1.83.0  libfuse3-3              libsframe1           linux-image-6.14.0-1018-raspi    python3-packaging-whl
  libboost-context1.83.0     libboost-thread1.83.0           libgnutls-openssl27t64  libsigsegv2          linux-modules-6.14.0-1018-raspi  python3-wheel-whl
  libboost-filesystem1.83.0  libboost-url1.83.0              libllvm18               libstdc++-14-dev     linux-raspi-headers-6.14.0-1018
Use 'apt autoremove' to remove them.

Summary:
  Upgrading: 0, Installing: 0, Removing: 0, Not Upgrading: 0
  1 not fully installed or removed.
  Space needed: 0 B / 47.6 GB available

Setting up initramfs-tools (0.150ubuntu3.1) ...
update-initramfs: deferring update (trigger activated)
Processing triggers for flash-kernel (3.109ubuntu6.2) ...
Using DTB: bcm2711-rpi-4-b.dtb
Installing /lib/firmware/6.17.0-1007-raspi/device-tree/broadcom/bcm2711-rpi-4-b.dtb into /boot/dtbs/6.17.0-1007-raspi/./bcm2711-rpi-4-b.dtb
Taking backup of bcm2711-rpi-4-b.dtb.
Installing new bcm2711-rpi-4-b.dtb.
flash-kernel: installing version 6.17.0-1007-raspi
Copying kernel assets to /boot/firmware/new/
cp: cannot stat '/boot/firmware/current/cmdline.txt': No such file or directory
dpkg: error processing package flash-kernel (--configure):
 installed flash-kernel package post-installation script subprocess returned error exit status 1
Processing triggers for initramfs-tools (0.150ubuntu3.1) ...
update-initramfs: Generating /boot/initrd.img-6.17.0-1007-raspi
Using DTB: bcm2711-rpi-4-b.dtb
Installing /lib/firmware/6.17.0-1007-raspi/device-tree/broadcom/bcm2711-rpi-4-b.dtb into /boot/dtbs/6.17.0-1007-raspi/./bcm2711-rpi-4-b.dtb
Taking backup of bcm2711-rpi-4-b.dtb.
Installing new bcm2711-rpi-4-b.dtb.
flash-kernel: installing version 6.17.0-1007-raspi
Copying kernel assets to /boot/firmware/new/
cp: cannot stat '/boot/firmware/current/cmdline.txt': No such file or directory
run-parts: /etc/initramfs/post-update.d//flash-kernel exited with return code 1
dpkg: error processing package initramfs-tools (--configure):
 installed initramfs-tools package post-installation script subprocess returned error exit status 1
Errors were encountered while processing:
 flash-kernel
 initramfs-tools
Error: Sub-process /usr/bin/dpkg returned an error code (1)


If this matters, here is /boot/firmware/current and a find showing that no cmdline.txt file exists anywhere under /boot:

root at pi4:~# find /boot -name cmdline.txt

root at pi4:~# l /boot/firmware/current/
total 98M
drwxr-xr-x 3 root root 4.5K Feb  4 17:19 .
drwxr-xr-x 4 root root  11K Jan  1  1970 ..
-rwxr-xr-x 1 root root  32K Feb  4 17:18 bcm2710-rpi-2-b.dtb
-rwxr-xr-x 1 root root  35K Feb  4 17:18 bcm2710-rpi-3-b-plus.dtb
-rwxr-xr-x 1 root root  35K Feb  4 17:18 bcm2710-rpi-3-b.dtb
-rwxr-xr-x 1 root root  32K Feb  4 17:18 bcm2710-rpi-cm3.dtb
-rwxr-xr-x 1 root root  34K Feb  4 17:18 bcm2710-rpi-zero-2-w.dtb
-rwxr-xr-x 1 root root  34K Feb  4 17:18 bcm2710-rpi-zero-2.dtb
-rwxr-xr-x 1 root root  55K Feb  4 17:18 bcm2711-rpi-4-b.dtb
-rwxr-xr-x 1 root root  55K Feb  4 17:18 bcm2711-rpi-400.dtb
-rwxr-xr-x 1 root root  38K Feb  4 17:18 bcm2711-rpi-cm4-io.dtb
-rwxr-xr-x 1 root root  56K Feb  4 17:18 bcm2711-rpi-cm4.dtb
-rwxr-xr-x 1 root root  53K Feb  4 17:18 bcm2711-rpi-cm4s.dtb
-rwxr-xr-x 1 root root  77K Feb  4 17:18 bcm2712-d-rpi-5-b.dtb
-rwxr-xr-x 1 root root  77K Feb  4 17:18 bcm2712-rpi-5-b.dtb
-rwxr-xr-x 1 root root  77K Feb  4 17:18 bcm2712-rpi-500.dtb
-rwxr-xr-x 1 root root  77K Feb  4 17:18 bcm2712-rpi-cm5-cm4io.dtb
-rwxr-xr-x 1 root root  78K Feb  4 17:18 bcm2712-rpi-cm5-cm5io.dtb
-rwxr-xr-x 1 root root  77K Feb  4 17:18 bcm2712-rpi-cm5l-cm4io.dtb
-rwxr-xr-x 1 root root  78K Feb  4 17:18 bcm2712-rpi-cm5l-cm5io.dtb
-rwxr-xr-x 1 root root  77K Feb  4 17:18 bcm2712d0-rpi-5-b.dtb
-rwxr-xr-x 1 root root  21K Feb  4 17:18 bcm2837-rpi-3-a-plus.dtb
-rwxr-xr-x 1 root root  21K Feb  4 17:18 bcm2837-rpi-3-b-plus.dtb
-rwxr-xr-x 1 root root  21K Feb  4 17:18 bcm2837-rpi-3-b.dtb
-rwxr-xr-x 1 root root  20K Feb  4 17:18 bcm2837-rpi-cm3-io3.dtb
-rwxr-xr-x 1 root root  21K Feb  4 17:18 bcm2837-rpi-zero-2-w.dtb
-rwxr-xr-x 1 root root 4.2K Feb  4 17:18 blaize-blzp1600-cb2.dtb
-rwxr-xr-x 1 root root  52K Feb  4 17:18 bootcode.bin
-rwxr-xr-x 1 root root 2.7K Feb  4 17:18 en7581-evb.dtb
-rwxr-xr-x 1 root root 7.2K Feb  4 17:18 fixup.dat
-rwxr-xr-x 1 root root 5.4K Feb  4 17:18 fixup4.dat
-rwxr-xr-x 1 root root 3.2K Feb  4 17:18 fixup4cd.dat
-rwxr-xr-x 1 root root 8.3K Feb  4 17:18 fixup4db.dat
-rwxr-xr-x 1 root root 8.3K Feb  4 17:18 fixup4x.dat
-rwxr-xr-x 1 root root 3.2K Feb  4 17:18 fixup_cd.dat
-rwxr-xr-x 1 root root  11K Feb  4 17:18 fixup_db.dat
-rwxr-xr-x 1 root root  11K Feb  4 17:18 fixup_x.dat
-rwxr-xr-x 1 root root 2.3K Feb  4 17:18 hat_map.dtb
-rwxr-xr-x 1 root root  63M Feb  4 17:18 initrd.img
-rwxr-xr-x 1 root root 1.5K Feb  4 17:18 overlay_map.dtb
drwxr-xr-x 2 root root  31K Feb  4 17:19 overlays
-rwxr-xr-x 1 root root 2.9M Feb  4 17:18 start.elf
-rwxr-xr-x 1 root root 2.2M Feb  4 17:18 start4.elf
-rwxr-xr-x 1 root root 790K Feb  4 17:18 start4cd.elf
-rwxr-xr-x 1 root root 3.6M Feb  4 17:18 start4db.elf
-rwxr-xr-x 1 root root 2.9M Feb  4 17:18 start4x.elf
-rwxr-xr-x 1 root root 790K Feb  4 17:18 start_cd.elf
-rwxr-xr-x 1 root root 4.7M Feb  4 17:18 start_db.elf
-rwxr-xr-x 1 root root 3.6M Feb  4 17:18 start_x.elf
-rwxr-xr-x 1 root root    5 Feb  4 17:19 state
-rwxr-xr-x 1 root root  13M Feb  4 17:18 vmlinuz

ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: flash-kernel 3.109ubuntu6.2
ProcVersionSignature: Ubuntu 6.14.0-1019.19-raspi 6.14.11
Uname: Linux 6.14.0-1019-raspi aarch64
NonfreeKernelModules: zfs
ApportVersion: 2.33.1-0ubuntu3
Architecture: arm64
CasperMD5CheckResult: unknown
CloudBuildName: server
CloudSerial:
 
Date: Wed Feb  4 18:58:32 2026
ProcEnviron:
 LANG=C.UTF-8
 PATH=(custom, no user)
 SHELL=/bin/bash
 TERM=screen-256color
 XDG_RUNTIME_DIR=<set>
RebootRequiredPkgs: Error: path contained symlinks.
SourcePackage: flash-kernel
UpgradeStatus: Upgraded to questing on 2026-02-04 (0 days ago)

** Affects: flash-kernel (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug arm64 cloud-image questing

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https://bugs.launchpad.net/bugs/2140442

Title:
  cp: cannot stat '/boot/firmware/current/cmdline.txt': No such file or
  directory

Status in flash-kernel package in Ubuntu:
  New

Bug description:
  This interrupted a release upgrade from plucky to questing on my pi4.
  After dropping to a shell, "apt -f install" yields the same error, as
  does just calling "flash-kernel":

  root at pi4:~# apt -f install
  The following packages were automatically installed and are no longer required:
    g++-14                     libboost-iostreams1.83.0        libclang-cpp18          libllvm19            libxml2                          linux-raspi-tools-6.14.0-1018
    g++-14-aarch64-linux-gnu   libboost-locale1.83.0           libclang1-19            libreiserfscore0t64  linux-headers-6.14.0-1018-raspi  linux-tools-6.14.0-1018-raspi
    gir1.2-nautilus-4.0        libboost-program-options1.83.0  libfuse3-3              libsframe1           linux-image-6.14.0-1018-raspi    python3-packaging-whl
    libboost-context1.83.0     libboost-thread1.83.0           libgnutls-openssl27t64  libsigsegv2          linux-modules-6.14.0-1018-raspi  python3-wheel-whl
    libboost-filesystem1.83.0  libboost-url1.83.0              libllvm18               libstdc++-14-dev     linux-raspi-headers-6.14.0-1018
  Use 'apt autoremove' to remove them.

  Summary:
    Upgrading: 0, Installing: 0, Removing: 0, Not Upgrading: 0
    1 not fully installed or removed.
    Space needed: 0 B / 47.6 GB available

  Setting up initramfs-tools (0.150ubuntu3.1) ...
  update-initramfs: deferring update (trigger activated)
  Processing triggers for flash-kernel (3.109ubuntu6.2) ...
  Using DTB: bcm2711-rpi-4-b.dtb
  Installing /lib/firmware/6.17.0-1007-raspi/device-tree/broadcom/bcm2711-rpi-4-b.dtb into /boot/dtbs/6.17.0-1007-raspi/./bcm2711-rpi-4-b.dtb
  Taking backup of bcm2711-rpi-4-b.dtb.
  Installing new bcm2711-rpi-4-b.dtb.
  flash-kernel: installing version 6.17.0-1007-raspi
  Copying kernel assets to /boot/firmware/new/
  cp: cannot stat '/boot/firmware/current/cmdline.txt': No such file or directory
  dpkg: error processing package flash-kernel (--configure):
   installed flash-kernel package post-installation script subprocess returned error exit status 1
  Processing triggers for initramfs-tools (0.150ubuntu3.1) ...
  update-initramfs: Generating /boot/initrd.img-6.17.0-1007-raspi
  Using DTB: bcm2711-rpi-4-b.dtb
  Installing /lib/firmware/6.17.0-1007-raspi/device-tree/broadcom/bcm2711-rpi-4-b.dtb into /boot/dtbs/6.17.0-1007-raspi/./bcm2711-rpi-4-b.dtb
  Taking backup of bcm2711-rpi-4-b.dtb.
  Installing new bcm2711-rpi-4-b.dtb.
  flash-kernel: installing version 6.17.0-1007-raspi
  Copying kernel assets to /boot/firmware/new/
  cp: cannot stat '/boot/firmware/current/cmdline.txt': No such file or directory
  run-parts: /etc/initramfs/post-update.d//flash-kernel exited with return code 1
  dpkg: error processing package initramfs-tools (--configure):
   installed initramfs-tools package post-installation script subprocess returned error exit status 1
  Errors were encountered while processing:
   flash-kernel
   initramfs-tools
  Error: Sub-process /usr/bin/dpkg returned an error code (1)

  
  If this matters, here is /boot/firmware/current and a find showing that no cmdline.txt file exists anywhere under /boot:

  root at pi4:~# find /boot -name cmdline.txt

  root at pi4:~# l /boot/firmware/current/
  total 98M
  drwxr-xr-x 3 root root 4.5K Feb  4 17:19 .
  drwxr-xr-x 4 root root  11K Jan  1  1970 ..
  -rwxr-xr-x 1 root root  32K Feb  4 17:18 bcm2710-rpi-2-b.dtb
  -rwxr-xr-x 1 root root  35K Feb  4 17:18 bcm2710-rpi-3-b-plus.dtb
  -rwxr-xr-x 1 root root  35K Feb  4 17:18 bcm2710-rpi-3-b.dtb
  -rwxr-xr-x 1 root root  32K Feb  4 17:18 bcm2710-rpi-cm3.dtb
  -rwxr-xr-x 1 root root  34K Feb  4 17:18 bcm2710-rpi-zero-2-w.dtb
  -rwxr-xr-x 1 root root  34K Feb  4 17:18 bcm2710-rpi-zero-2.dtb
  -rwxr-xr-x 1 root root  55K Feb  4 17:18 bcm2711-rpi-4-b.dtb
  -rwxr-xr-x 1 root root  55K Feb  4 17:18 bcm2711-rpi-400.dtb
  -rwxr-xr-x 1 root root  38K Feb  4 17:18 bcm2711-rpi-cm4-io.dtb
  -rwxr-xr-x 1 root root  56K Feb  4 17:18 bcm2711-rpi-cm4.dtb
  -rwxr-xr-x 1 root root  53K Feb  4 17:18 bcm2711-rpi-cm4s.dtb
  -rwxr-xr-x 1 root root  77K Feb  4 17:18 bcm2712-d-rpi-5-b.dtb
  -rwxr-xr-x 1 root root  77K Feb  4 17:18 bcm2712-rpi-5-b.dtb
  -rwxr-xr-x 1 root root  77K Feb  4 17:18 bcm2712-rpi-500.dtb
  -rwxr-xr-x 1 root root  77K Feb  4 17:18 bcm2712-rpi-cm5-cm4io.dtb
  -rwxr-xr-x 1 root root  78K Feb  4 17:18 bcm2712-rpi-cm5-cm5io.dtb
  -rwxr-xr-x 1 root root  77K Feb  4 17:18 bcm2712-rpi-cm5l-cm4io.dtb
  -rwxr-xr-x 1 root root  78K Feb  4 17:18 bcm2712-rpi-cm5l-cm5io.dtb
  -rwxr-xr-x 1 root root  77K Feb  4 17:18 bcm2712d0-rpi-5-b.dtb
  -rwxr-xr-x 1 root root  21K Feb  4 17:18 bcm2837-rpi-3-a-plus.dtb
  -rwxr-xr-x 1 root root  21K Feb  4 17:18 bcm2837-rpi-3-b-plus.dtb
  -rwxr-xr-x 1 root root  21K Feb  4 17:18 bcm2837-rpi-3-b.dtb
  -rwxr-xr-x 1 root root  20K Feb  4 17:18 bcm2837-rpi-cm3-io3.dtb
  -rwxr-xr-x 1 root root  21K Feb  4 17:18 bcm2837-rpi-zero-2-w.dtb
  -rwxr-xr-x 1 root root 4.2K Feb  4 17:18 blaize-blzp1600-cb2.dtb
  -rwxr-xr-x 1 root root  52K Feb  4 17:18 bootcode.bin
  -rwxr-xr-x 1 root root 2.7K Feb  4 17:18 en7581-evb.dtb
  -rwxr-xr-x 1 root root 7.2K Feb  4 17:18 fixup.dat
  -rwxr-xr-x 1 root root 5.4K Feb  4 17:18 fixup4.dat
  -rwxr-xr-x 1 root root 3.2K Feb  4 17:18 fixup4cd.dat
  -rwxr-xr-x 1 root root 8.3K Feb  4 17:18 fixup4db.dat
  -rwxr-xr-x 1 root root 8.3K Feb  4 17:18 fixup4x.dat
  -rwxr-xr-x 1 root root 3.2K Feb  4 17:18 fixup_cd.dat
  -rwxr-xr-x 1 root root  11K Feb  4 17:18 fixup_db.dat
  -rwxr-xr-x 1 root root  11K Feb  4 17:18 fixup_x.dat
  -rwxr-xr-x 1 root root 2.3K Feb  4 17:18 hat_map.dtb
  -rwxr-xr-x 1 root root  63M Feb  4 17:18 initrd.img
  -rwxr-xr-x 1 root root 1.5K Feb  4 17:18 overlay_map.dtb
  drwxr-xr-x 2 root root  31K Feb  4 17:19 overlays
  -rwxr-xr-x 1 root root 2.9M Feb  4 17:18 start.elf
  -rwxr-xr-x 1 root root 2.2M Feb  4 17:18 start4.elf
  -rwxr-xr-x 1 root root 790K Feb  4 17:18 start4cd.elf
  -rwxr-xr-x 1 root root 3.6M Feb  4 17:18 start4db.elf
  -rwxr-xr-x 1 root root 2.9M Feb  4 17:18 start4x.elf
  -rwxr-xr-x 1 root root 790K Feb  4 17:18 start_cd.elf
  -rwxr-xr-x 1 root root 4.7M Feb  4 17:18 start_db.elf
  -rwxr-xr-x 1 root root 3.6M Feb  4 17:18 start_x.elf
  -rwxr-xr-x 1 root root    5 Feb  4 17:19 state
  -rwxr-xr-x 1 root root  13M Feb  4 17:18 vmlinuz

  ProblemType: Bug
  DistroRelease: Ubuntu 25.10
  Package: flash-kernel 3.109ubuntu6.2
  ProcVersionSignature: Ubuntu 6.14.0-1019.19-raspi 6.14.11
  Uname: Linux 6.14.0-1019-raspi aarch64
  NonfreeKernelModules: zfs
  ApportVersion: 2.33.1-0ubuntu3
  Architecture: arm64
  CasperMD5CheckResult: unknown
  CloudBuildName: server
  CloudSerial:
   
  Date: Wed Feb  4 18:58:32 2026
  ProcEnviron:
   LANG=C.UTF-8
   PATH=(custom, no user)
   SHELL=/bin/bash
   TERM=screen-256color
   XDG_RUNTIME_DIR=<set>
  RebootRequiredPkgs: Error: path contained symlinks.
  SourcePackage: flash-kernel
  UpgradeStatus: Upgraded to questing on 2026-02-04 (0 days ago)

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