https://bugzilla.kernel.org/show_bug.cgi?id=19702 David Tomaschik <david@xxxxxxxxxxxxxxxxxx> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |david@xxxxxxxxxxxxxxxxxx --- Comment #53 from David Tomaschik <david@xxxxxxxxxxxxxxxxxx> 2011-08-11 12:59:49 --- I believe I'm having a similar problem. My hardware is a Dell Latitude E5420 with an i5-2520M CPU. I have the latest Dell BIOS for this system. I'm currently on the Ubuntu kernel 2.6.38-10-generic, and after I resume from suspend, CPU frequency scaling no longer works. Before suspending, cpufreq-aperf shows sane values. Afterwards, it gives frequencies of about 625MHz: cpufreq-aperf CPU Average freq(KHz) Time in C0 Time in Cx C0 percentage 000 0625250 00 sec 077 ms 00 sec 922 ms 07 001 0625250 00 sec 007 ms 00 sec 992 ms 00 002 0600240 00 sec 098 ms 00 sec 901 ms 09 003 0625250 00 sec 002 ms 00 sec 997 ms 00 I believe that, because of this, the cpufreq scaling won't bump things up. "That is the reason why the cpufreq subsystem, taking aperf values to calculate the next frequency into account never raises the frequency." Any idea why it would only occur after a suspend/resume cycle and what I can do to fix the issue? -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list 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
