Comment 661 for bug 752542

See https://github.com/Bumblebee-Project/bbswitch/issues/78

Kernel version:

    Linux 3.12.0-031200-generic #201311031935 SMP Mon Nov 4 00:36:54 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux (Linux Mint 16, Mainline kernel, happens with 3.11 and other distributions as well)

cat /proc/acpi/dump_info:

```
0000:00:00.0 060000
0000:00:01.0 060400 \_SB_.PCI0.PEG0
0000:00:01.1 060400 \_SB_.PCI0.PEG_
0000:00:02.0 030000 \_SB_.PCI0.VID_
0000:00:03.0 040300 \_SB_.PCI0.B0D3
0000:00:14.0 0c0330 \_SB_.PCI0.XHCI
0000:00:16.0 078000
0000:00:19.0 020000 \_SB_.PCI0.IGBE
0000:00:1a.0 0c0320 \_SB_.PCI0.EHC2
0000:00:1b.0 040300 \_SB_.PCI0.HDEF
0000:00:1c.0 060400 \_SB_.PCI0.EXP1
0000:00:1c.1 060400 \_SB_.PCI0.EXP2
0000:00:1d.0 0c0320 \_SB_.PCI0.EHC1
0000:00:1f.0 060100 \_SB_.PCI0.LPC_
0000:00:1f.2 010601 \_SB_.PCI0.SAT1
0000:00:1f.3 0c0500 \_SB_.PCI0.SMBU
0000:02:00.0 030000 \_SB_.PCI0.PEG_.VID_
0000:03:00.0 ff0000
0000:04:00.0 028000
```