[Bug 59781] intel_pstate synchronizes frequencies on wake from suspend

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=59781


Toralf Förster <toralf.foerster@gmx.de> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |toralf.foerster@gmx.de




--- Comment #8 from Toralf Förster <toralf.foerster@gmx.de>  2013-06-18 12:10:31 ---
/me wonders whether an issue at my system is connected to this bug report too.

I'm using the ondemand governor at a ThinkPad T420 with a i5 (4 cores, 2.6 GHz
max frequency, boost at 3.1 GHz). Since kernel 3.10-rcX I've to define
"intel_pstate=disable" at the kernel command line to force using the acpi
driver (P-State does not know anything about niced processes ...)

Now the problem:
After s2ram and wakeup I notice a higher temperatur and fan noise and realized,
that 3 of 4 cpu cores runs constantly at 2.6 GHz (cpu1-3, cpu0 were at the
expected 800 MHz for low load) - independend from the load. I've to explicitely
set the max freq to 2.4 GHz and back to 2.6 GHz. Then the current frequency was
scaled accordingly to the load.

-- 
Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.