Comment 7 for bug 36158

Hi, I also have a hard time with power-off, I searched a bit in the launchpad and bug #31993 seems related too.

The system goes to until the power off message, you can ear the hard drives being stopped, the screen goes dark, but power remains on motherboard.

I have a Bi-Opteron system, and was using for a long time Fedora Core distros, the problem appears erraticly, the kernels that doesn't power-off my system are kernel 2.6.11, 2.6.12, 2.6.15 and 2.6.16.

Ubuntu 6.06-flight6 is falty too.

I strongly believe in a kernel flaw that triggers subtily at kernel releases, sometimes if works sometimes not (as you can see in the kernels numbers I said above).
Since this happens at a moment the system does not give any command to the user, and no process can still berunning, there is no log nor evidence of the fail, so what can we do ?

As I read the posts above I tried the acpi and runlevel 1 tests ... no success everything fails.

I'll include my dmidecode output too.