Documentation: power: Add document on debugging shutdown hangs

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If the kernel hangs while shutting down, ideally a UART log should
be captured to debug the problem.  However if one isn't available,
users can use the pstore functionality to retrieve logs.

Add a document explaining how this works to make it more accessible
to users.

Tested-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Mario Limonciello (AMD) <superm1@kernel.org>
Link: https://patch.msgid.link/20251025004341.2386868-1-superm1@kernel.org
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

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Mario Limonciello (AMD) 2025-10-24 19:43:34 -05:00 • committed by Rafael J. Wysocki

parent 1cf9c4f115

commit b1f02f005a

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Documentation/power/index.rst

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Documentation/power/shutdown-debugging.rst

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