Bug#711237: Logging into KDE turn off the screen (for laptops with i915.invert_brightness=1?)

[Petter Reinholdtsen <pere@hungry.com>]

Package: kde-full
Version: 5:77+deb7u1
Severity: important
User:     debian-edu@lists.debian.org
Usertags: debian-edu

When installing Debian Wheezy on a Packard Bell EasyNote LV, the
screen is turned off when the machine boot after installation.  See
<URL: http://bugs.debian.org/710938 > for the details.  When applying
the workaround (i915.invert_brightness=1), I get the gdm and kdm login
display, and can log in.  And when I log into Gnome, I can use the
desktop.

But when I log into KDE, the splash screen show up, the first icon show
up, and then suddenly the screen is turned off.  The login continue, and
the screen to not turn on again until quite a while later.  I suspect
what happen is that the screen saver kick in and try to turn off the
screen while in reality it turn it on again.  When I move the mouse, the
screen turn off again.

I have no idea what package could cause this, so I file it against
kde-full, hoping you can help me debug this and pinpoint the problem to
the correct package.

The same problem exist in Ubuntu Raring when logging into KDE there.

-- 
Happy hacking
Petter Reinholdtsen