I have Raspberry 2 B, installed the Raspbian image . Everything was good. However, when I ran

sudo apt-get upgrade

it took about 50minues, and after reboot, i have blank screen with blinking horizontal cursor. I can SSH and work commands, but no GUI.

Can anyone tell me why this is happening, how to avoid it, and possibly shed some information on this matter?

  • 1
    I don't see how anyone can know what happened. You are in the best position to troubleshoot and find the root cause.
    – joan
    Commented Jan 25, 2016 at 20:17
  • But i have no knowledge of how i could do that :(
    – mgPePe
    Commented Jan 25, 2016 at 20:18
  • 1
    As joan mentioned this question is too broad. You should back up ANY computer system before doing a major change. The GUI on the Pi seems to be VERY sensitive to errors - either configuration or in the widgets. You could do an apt-get update and apt-get upgrade again (which should be much faster).
    – Milliways
    Commented Jan 26, 2016 at 0:22
  • Can you tell me how to narrow it down? I can quote exact items and version I have.
    – mgPePe
    Commented Jan 26, 2016 at 14:20

2 Answers 2


If none of those other options work, and you don't have any important files, you could always reformat the sd card and download a new version of raspian on it. However, I would only do this as a last resort if nothing else is working. You could also try and back up whatever you have left before you do this.

  • Yes, unfortunately i was forced to do that. But anytime i run sudo apt-get upgrade i end up in the darkness...
    – mgPePe
    Commented Jan 26, 2016 at 14:19

I just figured it out. I was trying to do sudo apt-get upgrade over WiFi dongle. However, the WiFi dongle didn't have good connection and things were dropping and apparently files were missing or were badly downloaded and as a result the os broke every time.

Also, my card was 16 GB, but the image was for 4 GB, so I had to expand the partition to take all the space (I saw somewhere errors for space too)

I connected it through Ethernet, ran again and everything was good.

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