modprobe acpi_call if ! lsmod | grep -q acpi_call; then echo "Error: acpi_call module not loaded" exit fi acpi_call () { echo "$*" > /proc/acpi/call result=$(cat /proc/acpi/call) case "$result" in Error*) echo "Enabling nVidia card failed ($result)." ;; *) echo "Enabling nVidia card succeeded." ;; esac } echo _PS0 $(acpi_call "\_SB.PCI0.PEG0.PEGP._PS0") modprobe nvidia-current