FM / suspend

/sys/power/suspend_stats

Name	Size	Mode	Actions
fail	4096	0444	edit dl rm
failed_freeze	4096	0444	edit dl rm
failed_prepare	4096	0444	edit dl rm
failed_resume	4096	0444	edit dl rm
failed_resume_early	4096	0444	edit dl rm
failed_resume_noirq	4096	0444	edit dl rm
failed_suspend	4096	0444	edit dl rm
failed_suspend_late	4096	0444	edit dl rm
failed_suspend_noirq	4096	0444	edit dl rm
last_failed_dev	4096	0444	edit dl rm
last_failed_errno	4096	0444	edit dl rm
last_failed_step	4096	0444	edit dl rm
success	4096	0444	edit dl rm

Edit: /sys/power/suspend_stats/last_failed_dev (4096B)

cmd: