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The laptop now powers off correctly and remains >> off. >> >> Hardware: >> - Laptop: Chuwi CoreBook Plus 16 >> - DMI board vendor: Default string >> - DMI board name: Default string >> - DMI BIOS version: AB8139_S_2C_V00.01_007 >> - DMI BIOS date: 2025-08-05 >> - CPU reported by the system: AMD Ryzen 5 7430U with Radeon Graphics >> - The CPU/hardware appears to correspond to Ryzen 5 5500U / Lucienne >>    silicon, although I am not certain whether this is relevant. >> >> Software: >> - Distribution: Arch Linux >> - Last known good: v7.1.7 >> - First known bad: v7.1.8 >> - Current test kernel: v7.3.0-rc3 with a7c855969b1a reverted >> >> I have verified the fix by booting the reverted kernel and testing >> poweroff successfully. >> >> Since the DMI board strings are generic ("Default string"), I would be >> happy to provide an ACPI dump, dmesg output, kernel configuration, >> bisect log, or perform additional testing if needed. >> >> I suspect this may be related to an S4 wake source left enabled by the >> firmware, but I have not identified the exact wake source yet. >> >> Best regards, >> Olzhas Marat >> >> #regzbot introduced: a7c855969b1a >> > > This is most likely a BIOS bug, but we need to dig into the details to > understand more and decide what to do.  It could also be a driver bug, > most likely in a WLAN driver. > > Can you please open a kernel bugzilla with the following information: > > 1) /sys/kernel/debug/gpio without the commit > 2) /sys/kernel/debug/gpio with the commit > 3) acpidump (just once) > 4) amd-s2idle report (this will capture and associate some information > that will make this easier to triage) > > Please CC me into the bug report. > > Thanks FYI for others, a bug report is opened here: https://bugzilla.kernel.org/show_bug.cgi?id=222041 We are working on narrowing down which GPIO is causing problems for this machine and then will decide what to do.