File vault paused and doesn't resume on Mac pro Mid 2012.

Question

file vault paused and doesn't resume on Mac pro 13" Mid 2012 LED display even after charger plugged in.
I activated file vault for the first time after upgrading to Yosemite OS X . Normal boot is unsuccessful as system hangs and get stuck but works only on safe mode (with usual limitations)and on contacting apple support tried internet recovery to create partition on HD to reinstall Yosemite, but failed as partition lay out is inactive ,later it was informed that encryption process overworked 500GB (non SSD) hard drive and the hard drive needs to be replaced!!
Did anyone have similar issue...any solutions?? Help!!

Answer 1

Ok,
did some extra test here, but first of all my configuration:
Mac Pro (Mid 2012) with ATI Radeon HD 5870 1GB.
2 LCD 24" Wide-screen (1st monitor Hyundai W240D and 2nd Monitor HP w2448hc), both LCD worked perfectly until reboot after installing OS X 1.8.2
After reboot only the 1st monitor wored fine, the 2nd not even listed, so tried to invert cable connections on the 2 miniports on the ATI video card, but nothing changed, still only the 1st monitor working.
Did a second test, disconnected the 1st monitor and connected ONLY the 2nd and now the second works fine.
Tried to connect 2nd monitor on a different miniport, and i still works fine.
Updated my MacBook Pro to 1.8.2 (it as an nVidia card) and connected my 2nd monitor to it and everything works fine, both the laptop LCD and my HP LCD are working fine.
So it looks like Apple screwed up the ATI driver on the latest 1.8.2, now only ONE miniport is active.
To all users with the same Mac Pro configuration: hold to update to Mountain Lion 1.8.2 until Apple fix this driver issue.
More info are on the Console output, so will have to contact Apple on-line support to signal this bug.