@Miroslav, Thanks for the ACPI data, it was most helpful to bring some insight.
the IA-PC boot flags does state that "PCIe ASPM is not supported": [0x06d 0109 2] IA-PC Boot Flags (see below): 0x0000 Legacy Devices Supported (V2): 0x0 8042 present on ports 60/64 (V2): 0x0 VGA Not Present (V4): 0x0 MSI Not Supported (V4): 0x0 PCIe ASPM Not supported (V4): 0x0 and this apparently is what Windows 7 seems to follow (http://www.microsoft.com/whdc/system/bus/pci/aspm.mspx). So it appears that the Linux aspm driver is not taking this advice into consideration and hence we get the problem. Disabling ASPM via the boot option "pcie_aspm=off" hence makes sense. I will open a discussion with the Intel developers and see what they make of this. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/656745 Title: notebook always crashes if on battery (dell vostro 3700 and others) -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs