Comment 7 for bug 1460399

one thing i noticed is that after dropping intel_pstate=disable from teh kernel commandline, thermald does not seem to star/run at all .. starting it manually i captured http://paste.ubuntu.com/11541063/
note that the behavior gets minimally better with thermald running, but switching workspaces is still as slow as about 20-30 sec in slow motion ...
http://imgur.com/Ukuv34t shows one terminal with the script above and one terminal with htop running ... this is with thermald active ... the CPU normally switches between 800MHz and 2.8GHz with the ondemand governor in use ...
with thermald i se it between 133MHz and at very short spikes up to 3.5GHz (but even when the cores run at that sped the system only gets responsive for a few seconds)

turning intel_pstate back off gets me a relatively usable system back ...