This sequence worked: rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org rpm -Uvh http://www.elrepo.org/elrepo-release-7. ... noarch.rpm yum install nvidia-detect.x86_64 yum install kmod-nvidia reboot 2560x1440 is nice. Now to hook up the other display. Gentlemen (and ladies), thanks as always!! Peter -- Peter Laws, BS, MRCP / N5UWY National Weather Center / Network Operations Center University of Oklahoma Information Technology plaws@xxxxxx --------------------------------------------------------------------- To unsubscribe, e-mail: trinity-users-unsubscribe@xxxxxxxxxxxxxxxxxxxxxxxxxx For additional commands, e-mail: trinity-users-help@xxxxxxxxxxxxxxxxxxxxxxxxxx Read list messages on the web archive: http://trinity-users.pearsoncomputing.net/ Please remember not to top-post: http://trinity.pearsoncomputing.net/mailing_lists/#top-posting