Anyone have other tips for this type of thing? I did try upgrading drivers/kernels already
If memtest shows a specific memory region as failing, swap out sticks to check which it is, and buy a new one. (Or if you're on a tight budget, you can disable that region with kernel boot options.)
If memtest gives errors in lots of places, might be a bad overclock. Loosen timings or give it more voltage.
Honestly, I'd always do that as the first option. In most cases you can still get years of life out of that stick of ram (but do check regularly, like after a week and then double the interval every time if it didn't get worse).
I would also recommend running it on one memory slot only (do this one by one).
Recently it happened that even a multi-day memtest run did not catch the defect in one of my ram slots.
But when I emptied it, all the gpu driver problems immediately stopped.
The symptom was a crash followed by garbage on screen and a "zzzz" sound. Sometimes followed by a shutdown.
I'll try it.