Comment 31 for bug 1359439

Same issue for me on my Thinkpad W530. After the upgrade from 14.04 to 14.10 the PC was working with the Intel integrated graphics card but not with the discrete Nvidia one (as usual after any kernel update...). When reinstalling the Nvidia drivers the problem appeared. Subsequently, I can login graphically when using the integrated graphics card (selected in the BIOS) but I have no dash. When using the discrete graphics card, I get a black screen and the system asks to run in low-graphics mode (but without success). Hope this helps.