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blank (black) screen after login on fedora 23

asked 2016-03-31 03:01:14 -0500

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I installed Fedora 23 (KDE spin) on a DELL Optiplex 745 with a Samsung SyncMaster monitor a few months ago. It has worked fine on this and a Lenovo ThinkPad X60. Last night the screen went blank (the desktop is black so it may be the desktop) with nothing else on it. The cursor moves normally, but there does not seem to be anything on the screen to select. I had installed about 10 updates that turned up on the notifier. I don't think it happened immediately afterward. At some point the screen blanked and, thinking that I had mistakenly pressed some key combination that had caused this, I shut the PC down. Since then whenever I boot the PC I get the login screen and all the snazzy graphics after logging in, but the screen again goes blank. In order to get a usable PC, I booted the Fedora Live distribution from the USB stick. This seems to operate without any problems. I don't want to back up my user space and reinstall if there is an easier way to fix this.

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answered 2017-03-06 10:41:14 -0500

I've started having this problem on my Fedora 23 system today. The system was install a little over a year ago with the last update occurring two months ago. Since then I have been able to log in and use the system with no problems until today. Now when I log in as my normal user I'm suddenly getting the black screen with just the mouse pointer as was described in the original post.

I can log in as root without any issues, including logging in to the GUI. It's only when I log in as my normal user that I run into problems, so I'm thinking that that would indicate a problem with my user config. I do use compiz as my window manager for my normal user while root is using the default setup. I don't think I've changed anything in compiz recently, but I won't swear to it either. The annoying thing is I don't see anything in /var/log/messages or /var/log/Xorg.*.log to indicate what the problem is or where to look.

Any suggestions?

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answered 2016-03-31 07:26:23 -0500

this post is marked as community wiki

This post is a wiki. Anyone with karma >750 is welcome to improve it.

Try this:

  1. switch to a tty with Ctrl+Alt+F3 (or some other Fn key)
  2. log in as root
  3. undo your last update

To undo your last update:

  • In case you updated your packages through dnf or yumex-dnf, just run dnf history undo last. You may also have a look at dnf history info last and dnf history list | less, giving you information on the last update(s) or other transactions with DNF.
  • In case you were using PackageKit or Gnome-Software, I don't know, someone else should answer this.

Anyway you should report this issue. Can you please tell us which packages were updated breaking your system?

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answered 2017-05-17 05:27:40 -0500

This is the best and most simple way i found in Dell Optiplex 745 Manual to eliminate the black screen from Dell optiplex series:

  • Ensure that the battery is fully charged
  • Remove the Battery and disconnect the AC Adapter; Hold the power button down for 5 seconds to discharge "Static Flea Power"
  • Reseat the battery on the Notebook and power it on
  • Remove the Battery from the Notebook and power it on using only the AC Adapter
  • Ensure that the Power LED on the AC Adapter is lit to ensure the functionality of the AC Adapter, also try another working AC Adapter if available.
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Asked: 2016-03-31 03:01:14 -0500

Seen: 1,590 times

Last updated: Mar 31 '16