Hiya, On Tue, 16 Dec 2014 04:56:42 PM Pandruvada, Srinivas wrote: Thanks for the idea, but it doesn't look like it.. $ cat /proc/cmdline BOOT_IMAGE=/(a)/boot/vmlinuz-3.13.0-43-generic root=UUID=3b13f4db-6ba3-47c9-aa78-2b52ae5c4807 ro rootflags=subvol=@ quiet splash nomdmonddf nomdmonisw nomdmonddf nomdmonisw vt.handoff=7 I don't see any mention of pstate in dmesg. :-( All the best, Chris -- Chris Samuel : http://www.csamuel.org/ : Melbourne, VIC