While you’re there, you may want to look for an option to go with one sound card. If there is no option then try this: https://askubuntu.com/questions/110835/how-to-disable-the-internal-sound-card
There is a way to turn off hybrid graphics: http://www.toontricks.com/2018/03/ubuntu-how-do-i-disable-intel-graphics.html
If the methods in this above link don’t work, you can try the method here: https://help.ubuntu.com/community/HybridGraphics (its solution #2 from the prior link but expanded out a bit more sensibly) - for this one, jump to “These settings are stored in grub’s (the bootloader) own setting files in /etc/default/grub” and start from there.