* Stefan Unterweger on Tue, May 04, 2010 at 12:43:22AM +0200: > However, if I do `shutdown -h -p` (thus power off), I get a > kernel panic; specifically, "AML PARSE ERROR" (see below). This > only happens when doing '-p' is involved somehow; rebooting > works, and just '-h' without '-p' does, too.
> | syscing disks... done > | ### AML PARSE ERROR (0x455): Undefined name: IO2B > | multiply freed item 0xd1d62b00 > | panic: free: duplicated free > | Stopped at Debugger+0x4: leave I've done some additional tests (since I remembered that this particular mainboard _did_ power off correctly a few years ago, albeit it was running an ancient 2.4.something Linux at that time, and maybe not even ACPI, so this does not really count). I just installed NetBSD on the machine---I suppose it is close enough to OpenBSD to make for a meaningful comparison. Here, the poweroff works. Well, I still see some ACPI error messages from the kernel fly by, but they're gone much too fast, and then the machine powers off. I'll try if I can find the responsible piece of NetBSD that works around this mainboard quirk. Maybe there's hope that I'll get it to work in OpenBSD at last, I don't really want to run NetBSD on it. :o) Since I don't really have any experience at all with kernel hacking, especially not with black magic as ACPI, does anyone have a pointer where I should start looking? s//un
