http://bugzilla.kernel.org/show_bug.cgi?id=12389 Summary: acpi-cpufreq doesn't detect speed limit when cold booted on battery Product: Power Management Version: 2.5 KernelVersion: 2.6.27 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: cpufreq AssignedTo: cpufreq@xxxxxxxxxxxxxxx ReportedBy: theholyettlz@xxxxxxxxxxxxxx Latest working kernel version: 2.6.26? Earliest failing kernel version: 2.6.27.10-167.fc10 (perhaps some earlier) Distribution: Fedora 10 Hardware Environment: x86-64, Clevo M720R notebook with Intel Core 2 Duo T8100 processor, X3100 graphics Software Environment: x86-64 Problem Description: When on battery power, my notebook's BIOS specifies that the maximum CPU speed should be 1.2 GHz. But immediately after booting on battery, acpi-cpufreq thinks the maximum speed is 2.101 GHz (what it should be on mains power). Switching briefly to mains, or pressing the "power save" button (which imposes a 1.2 GHz limit when on mains), seems to kick it all into place and thereafter the limit is 1.2 GHz on battery, 2.101 on mains. Steps to reproduce: 1. Cold boot on battery power. 2. Observe CPU will scale up to 2.101 GHz. 3. Briefly switch to mains or press power-save button. 4. Note maximum frequency on battery is now 1.2 GHz. -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. -- To unsubscribe from this list: send the line "unsubscribe cpufreq" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
