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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!

Reposted since original question was marked as answered/duplicated and I didn't find a way to reopen it.

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  • It may be a hardware issue, perhaps with the video connection. I am experiencing the exact same symptoms on HDMI. As a last effort I entered the Intel Visual BIOS menu and even that screen displayed the same issue. I haven't had the opportunity to replace the cable yet, however, so it's still just a theory.
    – user429907
    Jul 15, 2015 at 15:17

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