Calls to the display hardware for backlight settings seem to give undesirable results ... I can do a ioctl((DisplayFD), _IOW('d', 11, int), 0); to successfully turn off the backlight, however from that point on, I can't get it to come back on again. For the states I've tried 1-4, all to no avail.

We're using this as a screensaver type feature, and I'd definitely like to keep it around, but for the life of me, I can't get the damned thing to come back on.

Greg