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I have an annoying problem, the lag gets almost away with the new drivers of ATI, but now I have that problem after updating Ubuntu I get the black screen when booting. How to fix this, I have reinstalled 2 times and this happens always.

I think ALL is OK, because RAM test passes and HDD test passes too, and I have Dual-Booted Windows 7 with Ubuntu, and Windows 7 works all OK, so I don’t think its a hardware failure. I got this black screen by installing updates, I have reinstalled few times and it always happens when I install updates.

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closed as too localized by RobotHumans, Ringtail, bodhi.zazen, fossfreedom Apr 5 '12 at 8:34

This question is unlikely to help any future visitors; it is only relevant to a small geographic area, a specific moment in time, or an extraordinarily narrow situation that is not generally applicable to the worldwide audience of the internet. For help making this question more broadly applicable, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

This question appears to be abandoned, if you are experiencing a similar issue please ask a new question with details pertaining to your problem. If you feel this question is not abandoned, please flag the question explaining that. :) – Ringtail Feb 26 '12 at 5:37
This answer should help you solve the problem. – Aditya Feb 20 '13 at 12:48

Take a look at the answers to this question: Booting to no display which may be useful for you in order to find a solution to your problem. Placed here for your convenience:

The Ubuntu Wiki related to Troubleshooting BlankScreen provides useful information about why this problem occurs and how to fix it, which in my case solved my problem that was giving blank screen at the boot and I couldn't even see the Login Screen.

Related to what you refer about your issue, there is a part that reads just under "Non Symptoms":

If it occurs after entering your password on the login page, you have some different class of issue, such as an issue with 3D / DRM. Try disabling compiz (sudo chmod a-x /usr/bin/compiz), logging in as a different user, or turning off DRI.

However, I suggest you take a look at that document and check what of these can give you a clue on where to start for you to fix it.

Good luck!

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But i dont even hear sounds, i get the purple screen like normal, then there should come ubuntu logo and dots, but i get just a blank screen, no sounds, nothing. Just WLAN light ON and thats it, no even sound. – adssadsdf Oct 8 '11 at 11:26
Have you considered that this may be a hardware related issue? Something like your RAM or another part of your computer may be experiencing problems. Not all the failures are software/OS related. First make sure this is not your case and if so, then check if your system is booting. I suggest you to use a live session in order to examine your "Filesystem" (where the Ubuntu OS resides) and do something about your grub at /boot/grub/grub.cfg, removing the "splash" word on every entry did the trick for me last time. Please inform if you succeed and Good luck! – Geppettvs D'Constanzo Oct 8 '11 at 15:28

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