https://bugzilla.kernel.org/show_bug.cgi?id=57871 Summary: Cpu frequency scaling not working after waking up from suspend. Product: Power Management Version: 2.5 Kernel Version: 3.9 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: cpufreq AssignedTo: cpufreq@xxxxxxxxxxxxxxx ReportedBy: xdever@xxxxxxxxx Regression: Yes Created an attachment (id=101031) --> (https://bugzilla.kernel.org/attachment.cgi?id=101031) Dmesg, cpuinfo and kernel config Environment: Thinkpad X220, Intel(R) Core(TM) i7-2620M CPU @ 2.70GHz, Gentoo Description. I use 3.9 mainline kernel, with intel_pstate disabled (with intel pstate it uses ~0.2W more power when reading pdf document than without it). Since kernel 3.9, when my machine wakes up from suspend, in about 1 cases out of 3 the CPU scaling won't work and the CPU-s are stucked at 2.7GHz maximal speed. The machine becomes hot. Top shows nothing using the cpu. When I notice that the machine is hot, I put it back to suspend, and when I wake it up again it works as it should. Attachements: I attached dmesg, cpuinfo and my kernel configuration. The dmesg is long since the machine is running more than 1 days, but in the resume before the last it was overheating and in the last one it is not overheating. -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. -- 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
