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I have been using Ubuntu for several years, but this is the first time I have had a problem like this. When I upgraded from 12.10 to 13.04, every time I boot into Ubuntu and the login screen is supposed to show up, my screen remains black. I can't see any part of the login screen. Typing on the keyboard and moving the mouse doesn't help at all. The same happens when I lock my screen and walk away. When I come back, no keyboard or mouse movement bring the display back up. The only way I have overcome this is by using my keyboard's "brighten the screen" button. Only then does the screen the login or lock menu. I was hoping that at some point, an update would fix the problem. But as of now, it has stayed the same, and I have been putting up with it for nearly three months. Why does 13.04 cause my laptop screen to go black? Is there a way to fix it?

The laptop in question is a HP Pavilion dv4-2160us Entertainment Notebook

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closed as off-topic by wojox, Raja, Jorge Castro, Thomas Ward, Eliah Kagan Jul 6 '13 at 19:22

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Bug reports should be submitted via Launchpad so that the developers are made aware of them. See: How do I report a bug?" – wojox, Raja, Jorge Castro, Thomas Ward
If this question can be reworded to fit the rules in the help center, please edit the question.

    

This has been reported as a bug.

Bug #765438 On startup, the backlight is off on laptop

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Thank you for the link :) But I'm a little confused, wojox. I see that it's listed, but does that mean it hasn't been fixed yet? – Ryan Jul 4 '13 at 17:59
    
And what should I do about my issue? Should I report it somewhere? – Ryan Jul 4 '13 at 18:05
    
It's been reported. Just subscribe to the bug list for now as "affects me". – wojox Jul 4 '13 at 19:07
    
Okay :) I see where it says "This bug affects 123 people" and the links "Also effects project" and "Also effects distribution". So how do I subscribe like you mentioned? – Ryan Jul 4 '13 at 19:18

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