Random screen blanking -- a clue

[Shannon McMackin]

On 07/10/2009 10:10 PM, Sam Varshavchik wrote:
> There's been a steady trickle of complaints from different folks about
> their screens going blank for a second, or two, after upgrading to F11.
>
> I've observed this too -- it happens on one of my laptops every couple
> of days, or so. I've always had the impression that, for some reason,
> this was the screensaver kicking in. They way that happened always gave
> me that idea.
>
> I'm now pretty sure that, sometimes, for some reason the screensaver
> kicks in even though the system is not idle. I just finished typing, and
> began reading something on the screen, when the screen went black about
> three seconds after I stopped typing.
>
> I did nothing, and the screen continued to stay black. After waiting
> about ten seconds, I pressed the shift key, and my desktop came back.
>
> It's the screensaver. Something's causing it to trip, when it shouldn't.
>
Happens on my Lenovo T61.  Usually just goes out for a second or 2 and 
then comes back.