Problem with halt

Hello everyone,

Recently I moved my home desktop from (x)Ubuntu to Debian Wheezy. The experience is positive, with one exception: shutdown doesn't stop power for my computer.

I tried to play with settings in /etc/default/halt - both 'poweroff' and 'halt' have the same effect (or rather I should write no effect). At the end of the shutdown process machine informs that system is powered off or halted, but nothing happens.

Any idea what's wrong? I tried to blame BIOS, but don't see any obvious option in there and it worked with Ubuntu. I have quite standard nVidia mother board for AMD processors. I tried different kernels 3.2 and 3.10 both Xen and plain one (I mixed stable with testing), but AFAIR shutdown was fault from the very clean installation.

Regards,
Wawrzek

PS.
Maybe helpful:
root@rome:~# dmesg|grep acpi
[    0.000000] ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled)
[    0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled)
[    0.000000] ACPI: LAPIC (acpi_id[0x02] lapic_id[0x02] enabled)
[    0.000000] ACPI: LAPIC (acpi_id[0x03] lapic_id[0x03] enabled)
[    0.000000] ACPI: LAPIC (acpi_id[0x04] lapic_id[0x04] disabled)
[    0.000000] ACPI: LAPIC (acpi_id[0x05] lapic_id[0x05] disabled)
[    0.000000] ACPI: LAPIC (acpi_id[0x06] lapic_id[0x06] disabled)
[    0.000000] ACPI: LAPIC (acpi_id[0x07] lapic_id[0x07] disabled)
[    0.000000] ACPI: LAPIC_NMI (acpi_id[0x00] dfl dfl lint[0x1])
[    0.000000] ACPI: LAPIC_NMI (acpi_id[0x01] dfl dfl lint[0x1])
[    0.000000] ACPI: LAPIC_NMI (acpi_id[0x02] dfl dfl lint[0x1])
[    0.000000] ACPI: LAPIC_NMI (acpi_id[0x03] dfl dfl lint[0x1])
[    0.000000] ACPI: LAPIC_NMI (acpi_id[0x04] dfl dfl lint[0x1])
[    0.000000] ACPI: LAPIC_NMI (acpi_id[0x05] dfl dfl lint[0x1])
[    0.000000] ACPI: LAPIC_NMI (acpi_id[0x06] dfl dfl lint[0x1])
[    0.000000] ACPI: LAPIC_NMI (acpi_id[0x07] dfl dfl lint[0x1])
[    2.253854] xen: acpi sci 9
[    2.276339] acpiphp: ACPI Hot Plug PCI Controller Driver version: 0.5
[    4.053683] acpi PNP0A08:00: [Firmware Info]: MMCONFIG for domain 0000 [bus 00-7f] only partially covers this bridge
[    4.057694] acpi PNP0A08:00: ACPI _OSC support notification failed, disabling PCIe ASPM
[    4.057696] acpi PNP0A08:00: Unable to request _OSC control (_OSC support mask: 0x08)
[    4.060990] acpi root: \_SB_.PCI0 notify handler is installed
[    4.061027] Found 1 acpi root devices
[    4.229374] hpet_acpi_add: no address or irqs in _CRS

--
Dr Wawrzyniec Niewodniczański    or Wawrzek for short
PhD in Quantum Chemistry & MSc in Molecular Engineering
   WWW: http://wawrzek.name E-MAIL: jobs@wawrzek.name
      Linux User #177124