Module that switches off the ATI radeon card on Acer Aspire TimelineX 3820TG. Based on the original module for Lenovo laptops by Sylvain Joyeux and on this post by f4lkon: http://ubuntuforums.org/showthread.php?t=1242590&page=9.

To install with DKMS:

# cp -R lenovo_acpi /usr/src/lenovo_acpi-0.1
# dkms add -m lenovo_acpi -v 0.1
# dkms build -m lenovo_acpi -v 0.1
# dkms install -m lenovo_acpi -v 0.1

To install without DKMS:

# make
# make install

Then add lenovo_acpi to /etc/modules (Debian/Ubuntu etc.) or /etc/modules.conf (Red Hat/Fedora/CentOS etc.) for auto-loading. For one-time loading just run:

# modprobe lenovo_acpi