Hardware: Lenovo Carbon X1
$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Haswell-ULT Integrated Graphics Controller (rev 0b)
Recently after an apt-get update I noticed sluggish graphic performance, and compiz is running at 120-220%. When I go to "About This Computer" the graphics is listed as "Gallium 0.4 on llvmpipe (LLVM 3.4, 256 bits)", which from what I've gleaned from Google means that the Intel drivers aren't loading properly. My xorg log doesn't have anything out of the ordinary. intel-linux-graphics-installer is already installed,and "additional drivers" has nothing listed. I even tried the intel graphics installer and it said 14.04 isn't supported. What can I do to get hardware acceleration back? I've killed a whole day at work trying all of the things I've found on google, and nothing is working.