I ended up reinstalling the system. Nothing seemed to help. I am still not sure what happened. But thank you very much for response :) On Wed, Nov 29, 2017 at 10:25 AM, Anthony K <akcentos at anroet.com> wrote: > On 25/11/17 12:09, vychytraly . wrote: > >> Hello friends >> >> I was using EL7 on gnome 3 for few months without any problem. Even 2 >> hours >> ago I had the computer (Laptop running on Nvidia-Prime) turned on and >> everything was working without flaw. But when I turned on the computer few >> minutes ago, I got login screen (which does not usually happen, since I >> have autologin turned on) and when I entered my login credentials I got >> black screen and went back to login screen. Everytime I entered my >> credentials the same thing happened so I was stuck in endless login loop. >> At first I thought it was caused by gnome-extension I updated to new >> version today. >> >> For me, I noticed (on a different terminal - Ctrl+F2) that when I warm > boot the laptop, the Nvidia Card is not recognized and hence I get that > login loop. When this happens, I simply fully shutdown laptop for a minute > and when I boot up again, the card is found and all is well. I might as > well mention that I'm running Ubuntu 16.04 on my laptop so your problem > might be different but just thought I might mention it just in case... > > https://askubuntu.com/questions/941259/nvrm-no-nvidia- > graphics-adapter-found > > I used to do exactly like you - drop to shell and start messing with stuff > until I realized that this is what was happening. My workaround has been > to simply shutdown, wait a minute and reboot - works always! > > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos >