New Linux kernel fixes power-saving issues

Very excited about this. My T410 has a noticeably shorter battery life when running arch compared to windows. This will help close that gap a bit.

Good news. It should be noted that Ubuntu has included this fix since their distro version 3.0.0-13, and other distros may have backported the fix, too. But now it's in mainline.

Nice. My X220 already has seemingly-infinite battery life, so this should be even better.

"The patch only has this effect on systems with the firmware problem detailed above, which can be identified by using dmesg to display kernel messages and looking for the message "ACPI FADT declares the system doesn't support PCIe ASPM, so disable it"." >> Not for all!