Description of problem:

External display is not receiving any input from the system with 3.8.3-201.fc18.x86_64. I've tried both vga/dvi inputs and tried to connect display trough dock and directly to the laptop.

So far xrandr and gnome-config-display sees the second display but as I said the display itself does not detect and input at all. I've tried to switch display layouts with fn+f7 but so far I never got to a point that display panel would display anything.

workaround is to use older kernel (3.8.2-206.fc18.x86_64) which works.



Version-Release number of selected component (if applicable):
rpm -q xorg-x11-drv-intel kernel xorg-x11-server-Xorg
xorg-x11-drv-intel-2.21.4-1.fc18.x86_64
kernel-3.8.2-206.fc18.x86_64 (works)
kernel-3.8.3-201.fc18.x86_64 (does not work)
xorg-x11-server-Xorg-1.13.3-1.fc18.x86_64


How reproducible:


Steps to Reproduce:
1. boot t400 with kernel-3.8.3-201.fc18.x86_64 
2. connect external display to laptop
3. configure any display layout which is using external display
  
Actual results:

external display does not receive any input (internal display works)


Expected results:

external display should work
[lkocman@localhost ~]$ lspci -nn | grep VGA
00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07)

Additional info:

using older kernel solves the problem