8178 doesn't obey xorg.conf refresh settings
I have a Viewsonic VP171s TFT that can do 1280x1024@75Hz. For some reason it always shows small shimmering red dots when used in 75Hz mode so I've put the following line into my Section "Monitor" in xorg.conf:
After updating the driver from the 7xxx series to 8178 the monitor is always set to 75Hz instead of 60Hz when X is started. Rather oddly, starting nvidia-settings immediately switches the monitor back to 60Hz.