I begin to think the problem WAS NOT with validate_nice_value, but rather with the priority of debconf. "sudo dpkg-reconfigure --force -plow x11-common" seems to work but "sudo dpkg-reconfigure --force -pmedium x11-common" seems to bug.
I begin to think the problem WAS NOT with validate_ nice_value,
but rather with the priority of debconf.
"sudo dpkg-reconfigure --force -plow x11-common" seems
to work but "sudo dpkg-reconfigure --force -pmedium x11-common"
seems to bug.