Dell Precision 5560 is failing to report ACPI S3 sleep state
Issue
- Dell Precision 5560 is failing to report ACPI S3 sleep state
- dmesg report is missing S3:
ACPI: (supports S0 S4 S5)
- Invalid argument error and 'deep' is not supported
# echo deep > /sys/power/mem_sleep
bash: echo: write error: Invalid argument.
Environment
- Dell Precision 5560 with Tiger Lake H family processor
- Red Hat Enterprise Linux 8.4
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