GUI problem

I had a perfectly good working Devuan system running testing .(beowulf /ceres) Ran some updates a few days ago and everything was working fine. Rebooted starts normally brings up slim, user name and password as normal then a black screen. Switching to a terminal Alt Ctrl F1 allows me to log in. startx and xinit fail Obviously the video card is good or I couldn't get to the log in screen or use the terminal. The system is using the nouveau video driver. It was I believe running the Nvidia driver before the updates Only error I notice on shutdown is that slim is not running which I presume is due to a failure to startx. Where do I start debugging this one? Beats me right now. Stripes. -- Stripes Theotoky -37 .713869 145.050562