Bug 1332017

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There are graphical glitches when using F24 LXDE spin beta 1.4 using the graphics on a Nehalem generation 560M processor.  The first sign is that the check box in the Anaconda installer goes black when checked.  Other items such as buttons representing windows on the panel sometimes have parts go black or replaced with random colors.  

The most major and reproducible is when you press ctrl+alt+f<number key> to change terminal devices. It takes longer than normal to bring up the login prompt every time. Often a strip about 100 hundred pixels in height pops up with random color lines in it.  About 1/4 of the time the screen goes blank with and the system is unable to switch to any other terminal.  This is sometimes accompanied by random color lines about affecting the left 3 or 4 pixel columns and or random color lines affecting the top 100 or so pixels.  Repeated attempts to switch with ctrl+alt will always cause the lines to appear after the system freezes.  

The problem seems to apply to any case where the graphics device is reinitialized.  For example sometimes when logging out the system freezes after the screen goes back.  Normally the screen goes black for a split second before LXDM takes over and displays the login screen.  However the screen goes black and stays that way in this case. This makes me believe that initialization is particularly troublesome.

The problem can be "fixed" by installing kernel 4.4.8-300.fc23 and running that.  If you configure systemd to boot in to multi-user.target then you can switch terminals without a problem.  I use F23 as my only OS and have not run in to this problem at all on it.

Reproducible: Always

Steps to Reproduce:
1.boot in to lxde live using nehalem hd graphics as your gpu
2.use ctrl+alt+f<number> to switch between various terminals
3. the problem will usually occur when switching between f1 and various other terminals less than 10 times.
4. if it does seem to be working reboot and try again. Sometimes by luck getty gets started on all terminals by switching. switching to f2 and back to f1 fast enough prevents this and thus making the error easier to reproduce. However giving getty enough time does not prevent the bug every time.
Actual Results:  
screen went black sometimes with random color lines.  i think the colors are all pure red, green, or blue but i'm color blind. system becomes unresponsive.

Expected Results:  
I expected the other terminals to show up with a log in prompt.