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Douglas Teles
205c5bccb3
Suspend on the R36S family hangs because the shipped sleep.conf orders SuspendState as "mem standby freeze" and px30 mainline has no working S3, so the kernel commits to a state it cannot leave. Ship SuspendState=freeze on RK3326; the power button is the rk817 PMIC pwrkey, which every board DTS already marks wakeup-source, and logind already routes HandlePowerKey=suspend through systemd-sleep into this hook. Borrow the state discipline from the dArkOS sleep hooks: blank the backlight before the kernel path runs, snapshot the full mixer state with alsactl (the rk817 can lose its routing across s2idle and the existing restore only re-set the master volume), and save/restore the cpu/gpu/dmc governors. dwc2 reload on resume was already covered by modules.bad. Untested on hardware: needs a device check that s2idle enters (screen and audio off), the pwrkey wakes it, and audio routing plus USB gadget survive the round trip. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>