On 03/01/18 20:14, Zube wrote: > On Wed Jan 03 07:43:04 PM, Phil Perry wrote: > >>> On CentOS 7 I'm running into an issue with the latest nvidia driver >>> from elrepo: kmod-nvidia-384.98-1.el7_4.elrepo.x86_64 >>> This driver version seem to introduce issue in detecting video modes >>> when a monitor is connected using DVI. As soon as the machine attempts >>> to start X, nothing happens and the monitor goes into sleep mode >>> reporting that it has 'no signal'. >>> >>> It is interesting because it occurs with several monitors, but only >>> when they are connected through DVI. When using VGA it works like a >>> charm. >>> Also it did work without problems with the previous driver version >>> (kmod-nvidia-384.90-1.el7_4.elrepo.x86_64), with the exact same setup. >>> >>> In this case the issue occurs with an Nvidia NVS 315. I don't know if >>> other nvidia cards are affected. > > I can confirm that this happens with the driver downloaded from NVIDIA. > I had to fall back to the .90 driver to get it to work for all my > NVS 315s (with dual DVI) running on 7.4 / 6.9. > Thank you for the confirmation. I found a similar report on debian also relating to NVS315 with the 384.98 driver so I'm guessing this is hardware specific: https://email@example.com/msg1570324.html I couldn't find any reports upstream at nvidia so am unsure if they are aware of the issue. For reference, my GK208 [GeForce GT 730] in my test system is unaffected by the issue and is working fine with the 384.98 driver over DVI. There is an updated version 387.34 short-lived branch driver available in the elrepo testing repository that you could test to see whether the issue has been fixed in this latest release (only available for el7 currently).