Comment 9 for bug 1631191

This bug also affects me, I am another System 76 Orynx v2 (aka oryp2) user. Another workaround is, in addition to disabling power saving/idle for the screen, install the screensaver packages:

http://askubuntu.com/questions/292995/configure-screensaver-in-ubuntu

As long as you keep the video card warm, you'll not trigger this bug. Sure, your electric bill will suffer, but, who doesn't like bouncing cows? :-)