On 7/10/19 1:50 PM, alan(a)clueserver.org wrote:
I have seen this happen before. If you have nvidia-settings
installed, but
do not have the commercial nvidia driver running, nvidia-settings makes a
whole bunch of duplicate connections to the xserver. Once it is full, you
cannot open new windows. (Things get very strange.)
There should be messages in the log in this case. Or you could try
connecting to the X server from the console (xrandr or something like that).