Dear all,
I use kernel-3.11.0-0.rc2.git0.2.fc20.x86_64 on Sony Vaio Pro. This machine has Haswell processor, however, the intel_pstate cpufreq driver does not loaded.
$ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_driver acpi-cpufreq
I googled this issue and found a patch at https://spicious.com/sony-vaio-pro-11-with-ubuntu.html
diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c index 07f2840..1ce506a 100644 --- a/drivers/cpufreq/intel_pstate.c +++ b/drivers/cpufreq/intel_pstate.c @@ -522,6 +522,7 @@ static const struct x86_cpu_id intel_pstate_cpu_ids[] = { ICPU(0x2a, default_policy), ICPU(0x2d, default_policy), ICPU(0x3a, default_policy),
ICPU(0x45, default_policy), {}
}; MODULE_DEVICE_TABLE(x86cpu, intel_pstate_cpu_ids);
Could you apply this patch to the rawhide and f19 kernel?
kernel@lists.fedoraproject.org