Good Afternoon, I am using Dell Inspiron 5110 with Ubuntu 16.04.
After update several days ago, my display started to dim. I looked many opinions on the matter and i came to the conclusion, that there is a problem with my video drivers. So i followed the instructions to edit my xorg.conf to
Section "Device" Identifier "Card0" Driver "intel" Option "AccelMethod" "sna" EndSection
I am not sure that this is the problem or it is more general, but after restart it is impossible for me to log in. I see only the login screen and my keyboard and mouse are inactive.
I restarted the laptop and open recovery mode. Try to "sudo apt-get update" from the console (hoping to reinstall the video drivers and fix this, also tried different scripts from the forums), but i have error msg: "Some index files failed to download. They have been ignored, or old one". So i read that need to check my "/etc/apt/sources.list". Which i did open with "nano /etc/apt/sources.list". Some links inside had "gr." prefix. After more digging for info, i executed script to remove the prefix. But error msg is the same.
So far i do not have any progress. Generally i can reinstall the system, but need to save my files. I am new to Linux OS, please advise.