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I have a laptop and Nvidia 540GT A53S ASUS, Intel i7, 8 GB RAM and dualboot with Windows, but to spend time living on my Ubuntu machine hangs, I can not do anything. (I have Bumblebee 3.0)

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did you install nvidia driver form jocky-gtk or official site? –  shantanu Mar 26 '12 at 19:02
I have installed the Nvidia proprietary drivers, but I think it has nothing to do with the screen to hang me without me doing anything. Sorry for the English but I'm from Spain, thanks. –  aceqott Mar 26 '12 at 19:15
I put new GRUB_CMDLINE_LINUX_DEFAULT default, but I know that m is sufficient for battery will suffer without (GRUB_CMDLINE_LINUX_DEFAULT = "quiet splash pcie_aspm = force"). A greeting. –  aceqott Mar 27 '12 at 9:34
remove official driver. Install opensource driver from jocky-gtk (default installed) –  shantanu Mar 27 '12 at 18:34
that has nothing to do –  aceqott Mar 28 '12 at 12:56
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1 Answer

Try this one.

1. sudo gedit /etc/default/grub [open grub file using gedit with root parmission]
2. Undo all what you did in this file
4. previous line should be `GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"`
5. uncomment the line `GRUB_TERMINAL=console`[it will not help to find problem during boot]
6. save file and quit from gedit
7. update grub:  sudo update-grub
8. Reboot your system

GRUB_CMDLINE_LINUX="nomodeset" means that ubuntu will not try to load default driver[ubuntu provide default driver] for nvidia card

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