If the log mentions "various stuff about Nouveau drivers", you probably use this driver (which is correct). Let us see whether this log contains errors (indicated by "(EE)") or warnings (indicated by "(WW)") that may be useful to understand the problem. The easiest way to list these lines is from the terminal (in the "Accessories" menu) using these two command lines:
$ fgrep '(EE)' /var/log/Xorg.0.log
$ fgrep '(WW)' /var/log/Xorg.0.log

Reply via email to