So for E5-1650 v3 specifically:
0x2b works (microcode in trusty). 0x36 works with 3.13, but not with either 3.19 nor 4.3. (Pointing at intel_pstate, I think.)
So for E5-1650 v3 specifically:
0x2b works (microcode in trusty). 0x36 works with 3.13, but not with either 3.19 nor 4.3. (Pointing at intel_pstate, I think.)