Hello and welcome to CentOS fora.
I advise some necessary reading for all new members:
How To Provide Information About Your System
Where To Find Answers
Now, regarding your problem:
For start, I suggest you remove both the dkms
and the driver from nVidia website, and replace 'em with the one from the ELRepo
repository (package kmod-nvidia
), but configure the Yum Repository Priorities
first, of course.
ELRepo provides a kABI nVidia driver which supports your hardware, is kernel independent, packaged as an .rpm, and with it, you won't have to reinstall it every time you install and boot a new kernel.
Sadly, I have very little experience with two monitors attached to one VGA card... and have never witnessed what you're describing.
But regardless, for start I warmly recommend you replace these drivers with the one from ELRepo - as you can probably see the benefits yourself.
This Post was from: https://www.centos.org/newbb/viewtopic.php?forum=39&topic_id=29058&post_id=120379