System: Raspberry Pi 3 Model B (Rev 1.2, non-EEPROM), Ubuntu 26.04 (server,
ARM64+raspi)
Working kernel: 7.0.0-1009-raspi
Failing kernel: 7.0.0-1016-raspi
Symptom matches this bug exactly: after upgrading, piboot-try reports
"New boot assets in /boot/firmware/new failed. Fallen back to known
good state." on every login. Confirmed reproducible: ran
`piboot-try --reset-new` + reboot twice, both times the system cleanly
fell back to 1009 after the reboot cycle, no other instability observed.
One detail that may be relevant, and appears to differ from the
dracut/zstd root cause described earlier in this thread (which produces
an abnormally *small* truncated initramfs):
-rw------- 1 root root 8.4M /boot/initrd.img-7.0.0-1009-raspi (working)
-rw------- 1 root root 19M /boot/initrd.img-7.0.0-1016-raspi (failing)
Here the failing initramfs is *larger* than the working one, not
truncated/smaller — so this may be a distinct issue from the dracut
compression OOM bug, even though the user-facing symptom (piboot-try
fallback) is identical.
No journal entries were found for the failed boot attempt
(`journalctl -b -1`) — consistent with the failure occurring before
rootfs mount / journal initialization, as noted elsewhere in this
thread.
System has otherwise been stable on 1009 for 24+ hours (network,
cron jobs, custom services all functioning normally). Have applied
`apt-mark hold` on the working kernel and the linux-image-raspi/
linux-headers-raspi metapackages as a workaround, per the advice
earlier in this thread.
Happy to help gather serial console output if still needed for
diagnosis (per comment 9's instructions) - let me know.
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https://bugs.launchpad.net/bugs/2155094
Title:
RPi 3B, Zero 2W, 4B: New boot assets in /boot/firmware/new failed
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