Seems that also on LG ULTRA WIDE it is a problem to use it's resolution using GTS 250 GeForce. I was almost convinced that my video card was the problem.
ubuntu 16.04 maximum resolution allowed on ultrawide is 1920x1080, I was able in the past to see 2560x1440 resolution but when changed screen goes to black. video driver: nVidia 340 -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xrandr in Ubuntu. https://bugs.launchpad.net/bugs/1357804 Title: Ubuntu 14.04 does not support 2560x1080 resolution. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xrandr/+bug/1357804/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp