ACPI _OSC control

Posted by nmc on Ask Ubuntu See other posts from Ask Ubuntu or by nmc
Published on 2012-10-18T00:31:19Z Indexed on 2012/11/29 23:20 UTC
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12.04

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power-management

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acpi

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eeepc

I've noticed an error from dmesg output that ubuntu canot enable ASPM:

[    0.192722]  pci0000:00: ACPI _OSC support notification failed, disabling PCIe ASPM
[    0.192728]  pci0000:00: Unable to request _OSC control (_OSC support mask: 0x08)

While I know that this is not a bug, I'd like to ask if there is a way to correct it and enable ASPM, the reason being that it should increase battery life (powertop shows that PCIe is always 100% on).

Edit: I am running on an ASUS eee pc 1015px with the latest bios version (1401)

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