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The xorg.conf file may be the issue. I had to change text inside my /etc/X11/xorg.conf file. Specifically, the last lines of this file include text that disables composite graphics. Section "Extensions" Option "Composite" "Disable" EndSection I had to comment out those lines for my NVIDIA card to work properly. I did this by adding a pound ...


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Optimus is a technology from nVidia that allows you to switch between the lower power Intel graphics that are integrated in your CPU and the higher power nVidia graphics from your discrete graphics card. The big difference between Optimus and other strategies is that even when using the discrete card to do the computations, it still pipes the actual display ...


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It seems that for Ubuntu 14.04 there is native NVIDIA support for Optimus - named Prime: http://www.webupd8.org/2013/12/more-work-to-support-nvidia-optimus.html There is also some indicator app to help the process: http://www.webupd8.org/2014/01/prime-indicator-lets-you-quickly-switch.html So, instead of configuring applications lists you could just ...


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14.04 has several problems with hybrid graphics cards, specially the ones that came with 2nd gen intel processors and hd graphics with AMD/NVidia discrete GPUs, The best possible solution is just use the open source driver or install the intel driver from the intel download center, https://01.org/linuxgraphics/ install the driver from here , if you are not ...


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Yes, it works (at least for me on an Asus computer Nvidia Optimus with U 14.04). Try this excellent guide HTH


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New Intel driver is the problem. Nvidia doesn't support new drm environment. To remove the new driver run the following commands: sudo apt-get purge i915-3.15-3.13-dkms sudo apt-get install --reinstall xserver-xorg-video-intel libgl1-mesa-glx libgl1-mesa-dri xserver-xorg-core sudo dpkg-reconfigure xserver-xorg Then restart the system. optirun should work ...


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This is a bug and I expect them to fix this so it will work out of the box soon, but if you want to use the new kernel you can do the update and do the following afterwards after booting to get it working again. Open a terminal (hold in CTRL and ALT while pressing T) Add xorg-edgers PPA and update sudo add-apt-repository ppa:xorg-edgers/ppa You'll have ...


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Press 'Start+P'. You can toggle between multiple monitor modes.


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Here, this is what worked for me: I tried: sudo update-alternatives --config x86_64-linux-gnu_gl_conf sudo ldconfig -n sudo update-initramfs -u And rebooted, with no changes. So I tried: sudo apt-get purge libvdpau-va-gl1 bumblebee* nvidia* sudo apt-get install linux-headers-generic sudo apt-get install nvidia-331 nvidia-settings nvidia-prime Reboot. ...



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