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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 W., 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 W.
If this question can be reworded to fit the rules in the help center, please edit the question.

possible duplicate of Black screen after updating Ubuntu 11.04 and Mobility HD 4250 – Thomas W. Jul 6 '13 at 16:13

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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