So I tested also this blank screen problem with some mainline kernels.
Linux bilbo 3.0.9-030009-generic #201111111635 SMP Fri Nov 11 21:43:52 UTC 2011 i686 i686 i386 GNU/Linux
Linux bilbo 3.1.0-030100rc10-generic #201110200610 SMP Thu Oct 20 10:20:00 UTC 2011 i686 i686 i386 GNU/Linux
Linux bilbo 3.1.1-030101-generic #201111111651 SMP Fri Nov 11 22:00:08 UTC 2011 i686 i686 i386 GNU/Linux
The Problem is only solved with kernel
Linux bilbo 3.0.9-030009-generic #201111111635 SMP Fri Nov 11 21:43:52 UTC 2011 i686 i686 i386 GNU/Linux
xset s activate works fine with this one. Moving the mouse or typing a key brings the screen back.
So I tested also this blank screen problem with some mainline kernels.
Linux bilbo 3.0.9-030009- generic #201111111635 SMP Fri Nov 11 21:43:52 UTC 2011 i686 i686 i386 GNU/Linux 0-generic #201110200610 SMP Thu Oct 20 10:20:00 UTC 2011 i686 i686 i386 GNU/Linux generic #201111111651 SMP Fri Nov 11 22:00:08 UTC 2011 i686 i686 i386 GNU/Linux
Linux bilbo 3.1.0-030100rc1
Linux bilbo 3.1.1-030101-
The Problem is only solved with kernel generic #201111111635 SMP Fri Nov 11 21:43:52 UTC 2011 i686 i686 i386 GNU/Linux
Linux bilbo 3.0.9-030009-
xset s activate works fine with this one. Moving the mouse or typing a key brings the screen back.
Can I send something more to help?