The intel video driver in Debian ‘experimental’ didn’t work for my laptop. All I got was a black screen. This apparently is related to modesetting on 1400x900 screens, and is in upstream BTS as bug #9076.

Anyway, if you are facing this issue, you can either downgrade to the intel driver from Debian unstable, or download the source code and apply this diff:

--- xserver-xorg-video-intel-1.9.92.orig/src/i830_display.c
+++ xserver-xorg-video-intel-1.9.92/src/i830_display.c
@@ -121,1 +121,1 @@
-#define I9XX_P2_LVDS_SLOW_LIMIT         112000
+#define I9XX_P2_LVDS_SLOW_LIMIT         90000

(the patch will probably be garbled by the blog. Just find that line and change the value to 90000.)

Then recompile and you should have a working intel video driver again.