System cannot enter S0ix sleep after running ddcutil detect

[fanzhuyifan]

On my ASUS ROG Zephyrus G16, I cannot enter S0ix sleep after running ddcutil detect. Running arch linux with ddcutil 2.1.4. Also tested on ddcutil 2.0.0-release and 2.1.5-dev, and the issue exists on all.

Steps to reproduce:

• run cat /sys/devices/system/cpu/cpuidle/low_power_idle_system_residency_us && sudo rtcwake -m mem -s 15 && cat /sys/devices/system/cpu/cpuidle/low_power_idle_system_residency_us. Verify that the second number is bigger than the first, showing that the system has entered into s0ix sleep.
• run ddcutil detect
• rerun the first command. See that the two numbers are the same, showing that the system has not entered into s0ix sleep.

Other information

This happens both with and without setting the nvidia driver options in https://www.ddcutil.com/nvidia/.

Useful logs

Output of sudo ddcutil interrogate --verbose: ddcutil-interrogate.txt Output of ddcutil detect: ddcutil-detect.txt Output of S0ixSelftestTool after running ddcutil detect (failed entry into s0ix): 20240611-15-32-s0ix-output.log Output of S0ixSelftestTool before running ddcutil detect (successful entry into s0ix): 20240611-15-39-s0ix-output.log

System information

Operating System: Arch Linux KDE Plasma Version: 6.1.80 KDE Frameworks Version: 6.4.0 Qt Version: 6.7.1 Kernel Version: 6.9.3-arch1-1 (64-bit) Graphics Platform: Wayland Processors: 20 × 13th Gen Intel® Core™ i9-13900H Memory: 15.2 GiB of RAM Graphics Processor: Mesa Intel® Graphics Manufacturer: ASUSTeK COMPUTER INC. Product Name: ROG Zephyrus G16 GU603VV_GU603VV System Version: 1.0