DMPS calls dixSaveScreens() when turned off but not when turned
on. In most cases this is irrelevant as DPMS is done when a
key is hit in which case dixSaveScreens() will be called to
unblank anyhow. This isn't the case if we use xset (or the
DPMS extension directly) to unblank.
Check screenIsSaved to make sure the state needs to be changed
before calling dixSaveScreens().
Signed-off-by: Egbert Eich <eich@freedesktop.org>
Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
41d4beb261