I got some help on forum that i mentioned above, and i can use mesa_7_0_branch now. It is working on my system. I can use blender without crash, and it is fast. I think this bug is fixed. ----- sources & compile process ----- # git clone git://anongit.freedesktop.org/git/mesa/drm # cd drm # make install # make -C linux-core install # git clone git://anongit.freedesktop.org/git/xorg/driver/xf86-video-intel # cd xf86-video-intel # make install # git clone git://anongit.freedesktop.org/git/mesa/mesa # cd mesa # git checkout -b mesa_7_0_local origin/mesa_7_0_branch ...edit configs/default file INSTALL_DIR=/usr DRI_DRIVER_INSTALL_DIR=/usr/lib/dri # make linux-dri-x86-64 # make install