Hi, I have been plagued by this issue on my Latitude E5440:
"CPU may stay at low speed after resume from standby."
It is listed as "Fixed" in the latest BIOS update (A12), however, the update did NOT fix the issue for me. Can someone at Dell please have another look at it? Thanks!
The same issue here: Dell E7440.
Latest (A15) Bios, totally fresh install of Windows 8.1 and the notebook ALWAYS stays at low speed (798 MHz) after resuming from standby.