Error writing to /sys/power/state: -22
--- begin /sys/kernel/debug/suspend_stats ---
success: 0
fail: 1
failed_freeze: 0
failed_prepare: 0
failed_suspend: 1
failed_suspend_late: 0
failed_suspend_noirq: 0
failed_resume: 0
failed_resume_early: 0
failed_resume_noirq: 0
failures:
  last_failed_dev: dummy_dev
  last_failed_errno: -22
  last_failed_step: suspend
--- end /sys/kernel/debug/suspend_stats ---