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Description of problem: After updating kernel (3.15.3-200.fc20 or 3.15.4-200.fc20) the lightdm login screen is blank and black. Switching to a text terminal ([Alt]_[Ctrl]_[F2]), waiting for several seconds and switching back to the graphical login screen ([Alt]_[Ctrl]_[F1]), makes the login screen to appear. There was no such problems with previous versions of kernel (e.g. 3.14.9-200.fc20) Version-Release number of selected component (if applicable): kernel-3.15.3-200.fc20.x86_64; kernel-3.15.4-200.fc20.x86_64 lightdm-1.8.8-1.fc20.x86_64 How reproducible: 100% Steps to Reproduce: 1. Start computer using kernel 3.15.4-200 Actual results: Graphical login screen is black. Expected results: The Graphical login screen should be displayed. Additional info: lspci | grep VGA 00:02.0 VGA compatible controller: Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (primary) (rev 03)
I've run into this issue as well on my Dell Latitude D630 laptop. How I get past it is I alt-control-F2 and then switch back to alt-control-F1 and the graphical login screen appears.
Just a note that this also can affect kdm as that's what I'm running on my laptop. It is still an issue with the kernel-3.15.6-200.fc20.x86_64 that was recently released... although I'm not sure if this is a kernel-related issue or not.
There have been a number of package updates since my last comment... and I'm currently on the kernel-3.15.8-200.fc20.x86_64... and I can no longer duplicate the issue... so... so far as I know... it has been resolved and this bug can be closed as FIXED. Does the original bug reporter concur?
For my laptop the error is still there (kernel-3.15.8-200.fc20.x86_64) :-( The list of running processes will be attached.
Created attachment 926253 [details] The list of running processes (from terminal login) Switching back to graphical window with Alt_Ctrl_F1 does not help - the screen remains blank and dark (not black).
For my laptop the error is still there (kernel-3.15.10-200.fc20.x86_64) :-( More information: If an external monitor is attached to my laptop _before_ the laptop is switched-on, the normal log-in screen appears. The laptop monitor is considered to be the primary (as expected). If there is no external monitor - the blank screen again.
Created attachment 928617 [details] Output from lspci
At last! The kernel-3.16.2-200.fc20.x86_64 behaves as expected :-) N.B. During the last update the X.Org X11 X Window System xinit startup scripts was updated as well (xorg-x11-xinit-1.3.4-1.fc20). This bug may be marked as CLOSED.