Ok, here are the steps to switch off the nvidia card for L501X: *Extract the "peberlein-acpi_call-b60ce1f.tar.gz" which can be downloaded here: https://github.com/peberlein/acpi_call/tarball/master
*Go to Terminal and then: cd /media/BERNARD/Dell/peberlein-acpi_call-b60ce1f (that's where i extracted the file) make insmod ./acpi_call.ko ./m11xr2.sh *The videocard should be off now. You can try this comand "lspci -vnnn | perl -lne 'print if /^\d+\:.+(\[\S+\:\S+\])/' | grep VGA" and verify that the nvidia card doesn't have the "[VGA Controller]" anymore. Now, let's make this a permanent change: sudo cp acpi_call.ko /lib/modules/`uname -r`/kernel/drivers/acpi/ sudo depmod *It should open a file in gedit. In this file you should add a new last line with "acpi_call" writen in it. *Then, you should copy the "nvdown" that Jesus Legido attached in his email to /etc/init.d , so you type in Terminal: cd /etc/init.d sudo cp /media/BERNARD/Dell/nvdown nvdown (from where i saved to the new correct place, /etc/init.d) sudo chmod +x nvdown sudo update-rc.d nvdown defaults *There you go! Your battery should last longer now. =) It is good to emphacise that this works on the L501X, if you have another notebook you probably should change the "nvdown" file and the ./m11xr2.sh also. In fact, i think this should work in any Dell Optimus notebook (Can somewone confirm this?), since we are using Alienware's M11x R2 script and this notebook uses a nvidia 335m videocard which is different from the nvidia 420m from L501X. Ps: I am going to publish this and some more stuff in the "ubuntuforums.org" later. Bernard Barbosa da Silva Bolsista do PET Engenharia Mecânica 7º período | Universidade Federal Fluminense Lattes: http://lattes.cnpq.br/2191625341455217
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