i am having issue switching off the discrete NVIDIA graphics card in mint . previously i was using elementary-os and i could switch off the power to discrete graphics card by :
echo OFF > /sys/kernel/debug/vgaswitcheroo/switch.
but this isn't working in case of MINT :
cat /sys/kernel/debug/vgaswitcheroo/switch :
IGD(integrated graphics) : pwr
DIS(discrete graphics) : Dyn-pwr
DIS-Audio : pwr
even if i issue the command there's no change . the power doesn't turn off.
Also there was no DIS-Audio in elementary-OS and DIS only showed "pwr" instead of "DYN-pwr".