Screen artifacting - Hardware issue?
I've had my M2 Pro Mac mini for several months, and lately I've had some display issues.
I'm connected via a Thunderbolt to DP cable. My display is a 4 year old MSI 27inch 1440p monitor that I've never had any issues with, on Windows, Linux and a variety of consoles.
The issue: After waking my Mac up from sleep, the bottom of my display will be severely artifacted. Sometimes I'll have an area about 10%-15% of the display that is either completely black or at least dark and distorted (see picture). The only way to solve the issue is to do a full reboot. A reboot always fixes the problem. Also, the issue only emerges if my Mac has been in sleep mode for an extended period of time. If I use it every day, I never get to see this problem. If I let it sleep for two or more days, it's guaranteed to occur. The longer the Mac sleeps, the worse it gets.
The second issue I have is that, after using my Mac for several days in a row without rebooting, I eventually see very subtle horizontal lines on the display. Every other row of pixels will be slightly darker, like scanlines. Again, a reboot fixes this 100%.
I would really like to know if this is a known hardware issue. I've gone through several system updates, including the upgrade from Ventura to Sonoma, but the issues persisted.
Any input would be greatly appreciated.
Mac mini, macOS 14.0