Hi, Just got the same issue, this time, my connection was still present. Here the message from dmesg after going into single-user mode by killing init process.
[drm] *ERROR* ring sdma0 timeout, signaled seq=30079, emitted seq=30079 [drm] *ERROR* Process information: process pid 0 thread pid 0 Xorg process was a zombie at this time. This behavior seems to be generated when the screen is going blank, in my case, when xautolock is executed or screensaver is set. My first crash was on 2nd April, just after using the last current version at this time.
