I don't see any X bug described here or in the Ubuntu report - the X server has always defaulted to screen blanking after a timeout.
If you previously had UI to control it, and that's not working after an upgrade, then that's a bug in GNOME, KDE, or whatever provides that UI.
I don't see any X bug described here or in the Ubuntu report - the X server
has always defaulted to screen blanking after a timeout.
If you previously had UI to control it, and that's not working after an
upgrade, then that's a bug in GNOME, KDE, or whatever provides that UI.