intel hd4000 gpu core frequency locked at 350 mhz.

[rtyag]

In my lenovo u510 Intel hd4000 gpu core clock frequency is locked at 350 mhz.even on playing game like cod:modern warfare 2 it stays at 350 mhz.it never rise up. constantly remain at 350 mhz.

I have tried different versions of intel hd4000 driver and power modes(balanced,high performance).but gpu core clock stay at lowest frequency all the time.i checked the gpu core freq. using gpu-z and intel XTU.

[Silvia_L_Intel1]

Hello Rohit338, there is some additional information that I would like to get in order to find out what is causing this clock speed issue.

Would you please provide me this information?

Model number of your processor?

Graphics driver version installed?

Also I would suggest running the Intel Processor Diagnostic Tool to determine if the processor has any issue:

http://www.intel.com/support/processors/sb/CS-031726.htm http://www.intel.com/support/processors/sb/CS-031726.htm

[rtyag]

Processor :- Intel(R) Core(TM) i5-3317U CPU @ 1.70GHz, 1701 Mhz, 2 Core(s), 4 Logical Processor(s)

Graphic Driver Version is 10.18.10.3277

One more thing i would to mention that this issue arises only when i either plug or unplug the charger.

i.e if i boot system on battery it will run fine gpu core frequency will reach 1050 mhz but as soon i plug the charger it gets locked at 350 mhz.

only option i find for this is to shutdown and then start or sleep and then resume.as restart doesnt seems to fix the issue.