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I've used the latest proprietary nVidia drivers (313) when an update came and broke my desktop - initially it switched to some other drivers than proprietary (my second monitor wasn't used with it), then I switched it back to proprietary (313) and got low-resolution desktop labeled as laptop resolution. Then I managed to install stable nVidia drivers (310) and got it run again in proper resolution, but from that time I can't use any KDE applications. It just crash the X server upon launching an KDE application, turn my screens black and after a while it shows up Ubuntu login page.

I've tried apt-get clean, autoclean, correction of dependencies, etc., also I reinstalled the affected applications - nothing solved the problem.

I upgraded my system a while ago from 12.10 to 13.04 and I have set additional software source "http://ppa.launchpad.net/kubuntu-ppa/backports/ubuntu" because of the latest version of Kate editor. Everything is updated.

Does anybody experienced that kind of behavior and found a solution? Thank you for any kind of information!

Have a nice day

Milos

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Welcome to Ask Ubuntu! X server probably crashed for some odd reason. Have a look at what the X server logs say. /var/log/Xorg.0.log Beware that you will have to scroll up a lot of text as it contains a lot of lines after your X server was restarted. –  gertvdijk Jun 20 '13 at 20:22
    
how did you manage to "install stable nVidia drivers (310)". I am currently in the low res state and am unable to solve it. Maybe your solution could help me –  vedant1811 Aug 7 '13 at 23:01
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