[Bug 1577041] Re: Cannot login to kubuntu after upgrade

[Jan van de Wijdeven]

More googling suggests this has to do with using bumblebee to use the
nvidia and intel GPUs. I used the following blog to install the nvidia
drivers.

http://lenovolinux.blogspot.nl/2016/05/bumblebee-on-lenovo-t440p-nvidia-
gt.html

I can now use either GPU at my disposal:

$ glxgears -info
Running synchronized to the vertical refresh.  The framerate should be
approximately the same as the monitor refresh rate.
GL_RENDERER   = Mesa DRI Intel(R) HD Graphics 520 (Skylake GT2) 
GL_VERSION    = 3.0 Mesa 11.2.0
GL_VENDOR     = Intel Open Source Technology Center

$ optirun glxgears -info
GL_RENDERER   = GeForce 940M/PCIe/SSE2
GL_VERSION    = 4.5.0 NVIDIA 361.42
GL_VENDOR     = NVIDIA Corporation

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Title:
  Cannot login to kubuntu after upgrade

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