Bug#525619: xserver-xorg-video-intel: screen blank after returning to vt7

[Sanjoy Mahajan <sanjoy@olin.edu>]

> I see you're running 2.6.37, and it looks like there were some more
> backlight fixes lately, so you might want to try latest 2.6.38-rc from
> experimental.

Thanks, I've just now looked at the shortlog entry related to the
backlight.  However, my backlight is fine: It turns off upon suspend and
turns on upon resume.  The problem is the display itself, which is blank
upon resume (maybe 1 time out of 10).

<https://bugs.freedesktop.org/show_bug.cgi?id=34437> seems similar.