As far as i know (and wikipedia confirms: http://en.wikipedia.org/wiki/SpeedStep#Operating_system_support) XP does use EIST. When idle my computer -> properties shows 800MHz, under load (youtube with HD video) it rises to 1,66GHz. EIST in XP is disabled when power managment profile is set to "Home/Office Desk".
Quote from wikipedia: "Under Microsoft Windows XP, SpeedStep support is built into the power management console under the control panel. In Windows XP a user can regulate the processor's speed indirectly by changing power schemes. The "Home/Office Desk" disables SpeedStep, the "Portable/Laptop" power scheme enables SpeedStep, and the "Max Battery" uses SpeedStep to slow the processor to minimal power levels as the battery weakens." Maybe there is a problem in Ubuntu acpi module (or some other module(s)?), maybe trying to upgrade some modules to lucid ones will fix this annoying problem? -- Atom N280 frequency scaling not supported https://bugs.launchpad.net/bugs/422858 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
