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I have wanted to know can you make switching on the Inspiron 7520 using an AMD HD 7730m and an Intel 4000hd.

Dell sent me two scripts:   Script 1:

#turn off discrete graphics card
echo '\_SB.PCI0.PEG1.GFX0.DOFF' > /proc/acpi/call
# turn it back on
echo '\_SB.PCI0.PEG1.GFX0.DON' > /proc/acpi/call

  Script 2:

sudo apt-get install git
git clone link Intel Ubuntu drivee
cd acpi_call
sudo insmod acpi_call.ko
./ :

Basically, what this is trying to do is to shut down the card I don't need but I am not good enough to make those script work. May I have your help?

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git clone link Intel Ubuntu drivee doesn't make sense. After git clone there should be a URL to the repository location, which will probably end with /acpi_call.git. – Chris Morgan Aug 22 '13 at 2:40

Install this version of Ubuntu (12.04.1). After installation, just update your system and install additional drivers (GUI will guide you). I have the same laptop computer. It works perfect (drivers, brightness, switchable graphics, etc.)

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