Intel driver does not activate.

Hi there - I'm not sure why the i915 driver isn't activating for you - it might be worth
grabbing your Xorg log from /var/log/ and having a look at that to seeif there are any
clues.

I should point out though that this release of the Intel driver stack does not contain
an update for the driver, so whatever's affecting your system is coming frm your vanilla
distribution's packages (most likely).

[Post the log somewhere and we can have a look anyway incase it's something simple]

Thanks very much for the reply. Since it was a relatively new install, I decided to re-install the whole system. What I discovered is that with the vanilla installation before I touch anything else, the hardware acceleration works just fine, but the screen flashes and turns black for 1-2 sec every few minutes. This can be corrected using 'nomodeset' in the grub config, but then I lose hardware acceleration, so that was the source of my issue before. I assume it's switching drivers now on bootup. For the time being I have removed nomodeset from the config. Hardware accel works, but it's as if the display turns off briefly as though it were changing modes every once in a while. Next step is to install ddm again and see which driver it's reverting to. Will post the new xorg log if you think it will help...

Hi folks,

Just confirming that I have the same issue as mentioned above.  I should have posted to this thread originally.  See the new thread "need help recognizing driver i965 in Ubuntu 14.04."  Thanks!