After I upgraded from 14.10 to 15.04 now whenever I log in, My wallpaper becomes distorted and a series of black and white hyphen-like bars appear vertically on the right edge of the screen.

This is talking about the same issue but does not provide any solution.

This is also a discussion to the related problem but I couldn't find my solution.

Is it a display driver issue or a configuration issue? how can I fix it?


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A clean install will solve your issue. From the solved thread below it seems it was a driver issue.

Try a clean install and if it doesn't work, let me know. I have a few other suggestions. Good luck!

Source: http://ubuntuforums.org/showthread.php?t=2266382

  • I can't do a clean install at the moment. Can you put forward your other suggestions – Junaid Qadir Sep 15 '15 at 12:40

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