LCD controller is restarted/reinitialized every time you "blank" it. So this would be useless. Likely GPU driver/mesa/compositor crashing. I never have any iss

LCD controller is restarted/reinitialized every time you "blank" it. So this would be useless. Likely GPU driver/mesa/compositor crashing. I never have any issues with the screen when using i3wm (with GPU acceleration disabled). These bug reports would be more useful, if the OP did some debugging/log hunting.