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How to replace Intel pstate with ACPI cpufreq?
The idea here is to replace the intel-pstate CPU power management driver with the acpi-cpufreq one. This allows for better performance and slightly more efficient power use in some cases, as shown here. To disable the default intel-pstate driver, you need to edit /etc/default/grub:
Is it possible to disable the Intel pstate driver?
With recent kernels, it is possible to disable it, in some cases, after boot. To do so, write off to /sys/devices/system/cpu/intel_pstate/status; if this is successful (see the documentation for limitations), you should then be able to use the ACPI driver instead.
How to change the driver for cpufreq-info?
However, the driver for cpufreq-info is still intel-pstate. Please tell me how to change the driver for cpufreq-* command. The above might not be possible if intel-pstate is enabled with HWP support (turning that off requires a reboot with kernel command line parameter intel_pstate=no_hwp if I recall correctly, more info here ).
Why is my ACPI-cpufreq not loading properly?
While managing to disable it, acpi-cpufreq was not loading properly, the problem being SpeedStep was disabled. SpeedStep allows the frequency to be changed by software in these microprocessors, with it disabled it can only be touched by the hardware.
How to disable the default Intel pstate driver in Grub?
To disable the default intel-pstate driver, you need to edit /etc/default/grub: # also hides the splash screen for people like me that like to see log messages on boot instead of a progress bar. GRUB_CMDLINE_LINUX_DEFAULT=”i8042.reset quiet nosplash debug intel_pstate=disable”
Why is my Intel graphics driver driving me crazy?
11-04-2014 08:57 AM If you have windows KB2670838 update installed, uninstall it. It is known to cause issues. 11-24-2014 05:08 PM I have a Dell 14R (N4010) Windows 7 64 bits. I have had various delays loading material, and discovered error messages related to my INTEL graphics driver.
Where to find Intel chipset software and drivers?
On its Search Engine, type chipset software and press Enter. Select the product you’re interested in and look under the Driver section. Chipset support for Intel® hardware products is available through support sites: