Public bug reported:
The A/B boot mechanism must enable the hardware watchdog in config.txt
in order for the fallback mechanism to work automatically. This was
missed in the initial implementation as the initial tests were done with
a manual power-off, and later with a setup that happened to enable the
hardware watchdog anyway.
The migration routine that edits config.txt should append
dtparam=watchdog=on to the final [all] section in the file. It must be
added *after* the os_prefix lines (which the migration is already adding
at the top). If there is no final [all] section, one must be added. If
dtparam=watchdog=on is already present (in an "[all]" section) in the
file, we should not duplicate it.
** Affects: flash-kernel (Ubuntu)
Importance: High
Assignee: Dave Jones (waveform)
Status: Triaged
** Changed in: flash-kernel (Ubuntu)
Assignee: (unassigned) => Dave Jones (waveform)
** Changed in: flash-kernel (Ubuntu)
Milestone: None => ubuntu-25.10
** Changed in: flash-kernel (Ubuntu)
Importance: Undecided => High
** Changed in: flash-kernel (Ubuntu)
Status: New => Triaged
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https://bugs.launchpad.net/bugs/2120177
Title:
piboot needs to include watchdog in migration
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