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I know this question has been asked so many times (since 2011 from what I found out), but none of the responses seem to resolve the issue in my laptop, so apologies for the repetition.

I tried appending "nomodeset" to the grub boot and it no only doesn't work, but also it disables hardware acceleration, rendering X11 unusable.

I also tried some other configurations ("vga=773", like the different "video:"), but nothing seems to work.

$ lspci | grep -i vga
00:02.0 VGA compatible controller: Intel Corporation Broadwell-U Integrated Graphics (rev 09)

I installed packages grub2-splashimages and grub2-themes-ubuntu-mate, assuming it could be that just there was nothing configured, but nothing makes any difference.

Booting on text by adding "set gfxpayload=text" works, and it shows the textual booting process. But I didn't get anything useful from that ... (but that it takes a minute to start the cryptswap thing, the longest part of the boot process apparently)

I didn't see anything in dmesg that stand out, but then I wouldn't know what to look for.

Also I get random blanking of the screen during normal work: the computer is still working (even sound works), but some times the screen suddenly goes black while I'm typing. I recover from that by pressing the power button (going to suspend mode) and then coming back. I've seen reports of this also elsewhere, but it is a different graphics card.

Any ideas ? Many many thanks in advance for any help!

ps: let me know if any other information I can post here would help

Some references I looked and tried already:

My computer boots to a black screen, what options do I have to fix it?

https://wiki.ubuntu.com/X/Troubleshooting/BlankScreen

After trying the answer to the apparently duplicated question:

After logging in, there's a black screen and my cursor, nothing else! in Ubuntu 12.10

It seemed to have worked for a week, but I think it was only a coincidence, it's now randomly happening again. I've tried repeating the same commands and it doesn't have an effect.

It even happened once in the session manager, while i was typing my password to log in.

Any ideas ? Thanks in advance!

Community
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Jan
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  • Does [After logging in, there's a black screen and my cursor, nothing else! in Ubuntu 12.10](http://askubuntu.com/questions/243043/after-logging-in-theres-a-black-screen-and-my-cursor-nothing-else-in-ubuntu) help? – Eliah Kagan Apr 30 '15 at 01:01
  • In my case it didn't show the cursor, but the solution applied here as well. Perfect! – Jan Apr 30 '15 at 04:48
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    A week later the problem happened again, and has been happening somewhat often. It tried re-installing ubuntu-desktop again but it didn't help this time. Any ideas ? Btw it even happened once before I logged in, in the session manager, while I was typing my password. – Jan May 14 '15 at 11:00

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