Good job figuring it out. If updating UEFI(that's a UEFI board, not a BIOS one, though it's not much relevant here) and re-enabling the PCI-E resume still exhibits the issue, you should report a bug, presumably to the kernel. Might've already been fixed by now if the people from that 2011 thread did so. It's supremely odd that Wake Up settings are preventing the kernel from a poweroff. Martin On Wed, Jan 17, 2024 at 10:56 PM Łukasz Michalski <lm@xxxxxxx> wrote: > > Many thanks for your feedback. I forgot about Magic SysReq and this > helped me a lot to resolve this issue: > > 1. First I set sysctl kernel.sysrq=1 to enable alt+sysrq > 2. I've set kernel log level to 9 using alt+sysrq+9 > 3. Poweroff was way more verbose now. Last line on screen was: > > Preparing to enter system sleep state S5 > > Using google I found this: > https://bbs.archlinux.org/viewtopic.php?pid=1014214#p1014214 > > Resume by PCI-E was enabled in bios. After disabling it my system can > power off again. > > Thanks! > Łukasz
