I installed Debian wheezy with XFCE 4.8 on my new laptop, updated the kernel to 3.13 from backports.
When I connect the laptop to my monitor, I can see only a part of the screen on the monitor with a very low resolution. On my old laptop, I used to fix that using XFCE display settings or ARandR but now both don't detect the new monitor even though its obviously working.
I didn't install any proprietary drivers. I don't have xorg.conf. Here is the output of xrandr:
xrandr: Failed to get size of gamma for output default Screen 0: minimum 1920 x 1080, current 1920 x 1080, maximum 1920 x 1080 default connected 1920x1080+0+0 0mm x 0mm 1920x1080 0.0*
Here is the (hopefully) relevant output of lspci:
00:02.0 VGA compatible controller: Intel Corporation Haswell Integrated Graphics Controller (rev 06) 01:00.0 3D controller: NVIDIA Corporation Device 1292 (rev a1)