I'm having the following problem with Kubuntu 15.10.
Sometimes when I put my laptop(Dell e6420) to sleep and later wake it up, I see that CPU is running at really low frequency (~600Mhz)
This is normal behaviour, just after fresh boot.
(Can't post images, yet)
This is wrong behaviour, after waking up from sleep.
The commands I execute to check CPU details are:
$ cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_driver<br> $ cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor<br> $ grep MHz /proc/cpuinfo<br>
This certainly is a bug. Do you know any possible solution to resolve this problem.
I heard that it has something to do with intel_pstate driver.