Just opened my ThinkPad and for the second time in three days the act of closing the laptop to sleep it, then opening it again had caused Ubuntu to hardlock. This time I got a very brief small printout about "amd ring 0 error", then it went back to a black screen and I had to hold down the power button again.
I thought getting a ThinkPad, getting AMD cpu/gpu and picking the Linux distro Lenovo lists as supported would mean I got a minimally functioning computer but I guess not.
