The system should always be able to fetch brightness. For this reason, allow

this action to be performed even on inactive consoles - after all, it's anything
but harmful.

Note this depends on KAuth's 96cafc57a6f2faf3c18f087b15d72aca56bd4895 in KDE 4.7
to work properly.

BUG: 272438
FIXED-IN: 4.7.2