[Bug 2131273] Re: Upon upgrading Ubuntu to 25.10 from 25.04, new kernel 6.17 cannot be used and 6.14 remained

[Dave Jones]

I suspect this is a duplicate of LP: #2130734

Could you run "sudo rpi-eeprom-update" on your Pi 4 and report the date
next to "CURRENT:"? In order for the questing boot method to work this
needs to be 2022-11-25 (Nov 25 2022) or later.

If it's earlier, try running "sudo rpi-eeprom-update -a" and rebooting.
This should bring the EEPROM up to a reasonably recent state and ensure
the boot succeeds.

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Title:
  Upon upgrading Ubuntu to 25.10 from 25.04, new kernel 6.17 cannot be
  used and 6.14 remained

Status in flash-kernel package in Ubuntu:
  Confirmed

Bug description:
  piboot-try:
  New boot assets in /boot/firmware/new failed. Fallen back to known good
  state. Use piboot-try --reset-new to re-test boot assets. If you are able
  to determine the boot failure is due to a bug, please file an issue:
  ubuntu-bug flash-kernel

  Running in Raspberry Pi 4.

  /boot$ ll
  total 169964
  drwxr-xr-x  4 root root     4096 Nov 13 18:43 ./
  drwxr-xr-x 21 root root     4096 Nov 14 06:00 ../
  -rw-------  1 root root  4370980 Oct 14 22:07 System.map-6.14.0-1017-raspi
  -rw-------  1 root root  4541298 Oct 13 18:05 System.map-6.17.0-1004-raspi
  -rw-r--r--  1 root root   276979 Oct 14 22:07 config-6.14.0-1017-raspi
  -rw-r--r--  1 root root   282594 Oct 13 18:05 config-6.17.0-1004-raspi
  lrwxrwxrwx  1 root root       44 Nov 13 18:43 dtb@ -> dtbs/6.17.0-1004-raspi/./bcm2711-rpi-4-b.dtb
  lrwxrwxrwx  1 root root       44 Nov  4 10:15 dtb-6.14.0-1017-raspi@ -> dtbs/6.14.0-1017-raspi/./bcm2711-rpi-4-b.dtb
  lrwxrwxrwx  1 root root       44 Nov 13 18:43 dtb-6.17.0-1004-raspi@ -> dtbs/6.17.0-1004-raspi/./bcm2711-rpi-4-b.dtb
  drwxr-xr-x  7 root root     4096 Nov  4 10:15 dtbs/
  drwxr-xr-x  4 root root     8192 Jan  1  1970 firmware/
  lrwxrwxrwx  1 root root       28 Nov  4 10:13 initrd.img@ -> initrd.img-6.17.0-1004-raspi
  -rw-r--r--  1 root root 68400334 Nov  4 10:15 initrd.img-6.14.0-1017-raspi
  -rw-r--r--  1 root root 69346172 Nov  4 10:18 initrd.img-6.17.0-1004-raspi
  lrwxrwxrwx  1 root root       28 Nov  4 10:13 initrd.img.old@ -> initrd.img-6.14.0-1017-raspi
  lrwxrwxrwx  1 root root       25 Nov  4 10:13 vmlinuz@ -> vmlinuz-6.17.0-1004-raspi
  -rw-------  1 root root 13008913 Oct 14 22:07 vmlinuz-6.14.0-1017-raspi
  -rw-------  1 root root 13776765 Oct 13 18:05 vmlinuz-6.17.0-1004-raspi
  lrwxrwxrwx  1 root root       25 Nov  4 10:13 vmlinuz.old@ -> vmlinuz-6.14.0-1017-raspi

  ProblemType: Bug
  DistroRelease: Ubuntu 25.10
  Package: flash-kernel 3.109ubuntu6
  ProcVersionSignature: Ubuntu 6.14.0-1017.17-raspi 6.14.11
  Uname: Linux 6.14.0-1017-raspi aarch64
  ApportVersion: 2.33.1-0ubuntu3
  Architecture: arm64
  CasperMD5CheckResult: unknown
  CloudArchitecture: aarch64
  CloudID: nocloud
  CloudName: unknown
  CloudPlatform: nocloud
  CloudSubPlatform: config-disk (/dev/mmcblk0p1)
  Date: Fri Nov 14 08:40:37 2025
  ImageMediaBuild: 20250415.1
  SourcePackage: flash-kernel
  UpgradeStatus: Upgraded to questing on 2025-11-04 (10 days ago)

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