I'm running Ubuntu 12.04 64bit using ivy bridge integrated graphics (intel HD 4000).
The motherboard has a VGA and DVI output, both of which I've connected to monitors.
Upon boot, both monitors show the same image (they are mirrored). In Display settings, I can only see one monitor listed (labeled 'Laptop'). Pressing "Detect Displays" does not appear to do anything.
sudo apt-get install xserver-xorg-video-intel with no error messages and have updated to the September 9 release.
Possibly relevant info:
$ xrandr --query xrandr: Failed to get size of gamma for output default Screen 0: minimum 640 x 480, current 1280 x 1024, maximum 1280 x 1024 default connected 1280x1024+0+0 0mm x 0mm 1280x1024 0.0* 1024x768 0.0 800x600 0.0 640x480 0.0 $ lshw -C *-display UNCLAIMED description: VGA compatible controller product: Ivy Bridge Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 09 width: 64 bits clock: 33MHz capabilities: msi pm vga_controller cap_list configuration: latency=0 resources: memory:f7800000-f7bfffff memory:e0000000-efffffff ioport:f000(size=64) $ lspci ... 00:02.0 VGA compatible controller: Intel Corporation Ivy Bridge Graphics Controller (rev 09) ...