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The system completely hangs when entering s2idle > with the AMD PMC driver loaded. > > Hardware: > - Model: HP EliteBook X G1a 14 inch (Model 8D08) > - CPU: AMD Ryzen AI 9 HX 375 (Strix Point) > - GPU: Radeon 890M (integrated) > - BIOS: X88 Ver. 01.03.11 (2025-09-03) > > Kernel: 6.17.7-ba19.fc43.x86_64 (Fedora-based) > Current cmdline: bluetooth.disable_ertm=1 amdgpu.gpu_recovery=1 pcie_aspm=off > > Problem: > When executing "systemctl suspend", the system enters s2idle but immediately > hangs. The last kernel message is "PM: suspend entry (s2idle)" with no > further output. System becomes completely unresponsive - keyboard, touchpad, > and power button (short press) have no effect. Only hard power-off works. > > BIOS configuration: > - APMF enabled > - Modern Standby (s2idle only, S3 not supported by firmware) > - /sys/power/mem_sleep: [s2idle] > > AMD PMC device present: /sys/bus/platform/devices/AMDI000A:00/ > > Workaround: > Adding "initcall_blacklist=amd_pmc_driver_init" to kernel cmdline prevents > the AMD PMC driver from loading. With this workaround, s2idle works perfectly > and the system resumes normally from suspend. > > Verification with workaround: > - lsmod | grep amd_pmc: (no output - driver not loaded) > - Suspend/resume cycle: successful > > Logs attached: > 1. system-info.txt - detailed system information > 2. suspend-fail.log - Journal from failed suspend attempt (hangs after > "PM: suspend entry") > 3. suspend-success.log - Journal from successful suspend/resume with > workaround applied > > The failure log shows the system stops all output immediately after entering > s2idle, suggesting the AMD PMC driver causes a hard hang during early > platform suspend initialization. > > Please let me know if you need any additional debug information or would like > me to test patches. > > Best regards, > CX Hi, Please use amd-s2idle from https://pypi.org/project/amd-debug-tools/ to generate a report. It may root cause it for you. If it doesn't, please attach it to a bugzilla or drm/freedesktop bug report and CC me. Thanks,