@Miroslav: > My question is: What side effect can I expect from "pcie_aspm=off"?
PCI Express Active State Power Management (ASPM) defines a protocol for the PCI Express components in the D0 (fully on) operating state to reduce the Link power. This is achieved by putting their Links into a low power state and informing the other end of the link to go into a low power state too. The Pros to using ASPM: + saving power, depends on your machine and devices on the PCI link, but could be a Watt or so of savings. Your mileage may vary. Cons: - introduces device latency - the default mode is based on the BIOS settings, which may be wrong One can experiment with different pcie_aspm settings, for example: pcie_aspm=off - disables ASPM. pcie_aspm=default - use BIOS provided ASPM settings pcie_aspm=performance - disables ASPM and clock power management pcie_aspm=powersave - highest power saving mode, enable ASPM and clock power management References: * http://en.wikipedia.org/wiki/Active_State_Power_Management -- 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 [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
