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?
--
Yu