Matt Ingram had one of the easier QPR debuts to collect a clean sheet to go with almost pristine gloves.
Two great saves, to go with a first half where he did almost nothing was nearly marred in added time when for almost for the first time, Cardiff got behind the Hoops defence.
Sub Kenneth Zohore had a golden chance to win it for the play-off hopefuls when he went one-on-one with Ingram but subbed his shot into the ground and allowed Clint Hill to get back and make a point-saving clearance.
The last 20 minutes were lively, but this game is going to make poor DVD sales in either club shop.
Anthony Pilkington earned the early of the wrath of the ref and a yellow card for simulation when a breath of wind felled him in the box - and that was about it for a lifeless first half.
There wasn't much to stir both sets of supporters in the Cardiff City Stadium either, with a lot of attempted possession and very little end product.
In fact, it was 55 minutes before the booked Bluebird nearly made Rangers pay with a close header that cannoned off the outside of the post after a great cross from defender Scott Malone.
A minute later Matt Phillips had the first Hoops attempt on target, but it was comfortably gathered by David Marshall.
Peter Whittingham's corner caused problems and Sean Morrison thought he had scored only to see his powerful header palmed away by Ingram.
At the other end, Mass Luongo was nearly on the end of a goal from sub Ben Gladwin's cross, but Marshall was quick to claw it away for a corner.
Nedum Onuoha took one for the team when the Rs captain bravely threw himself in front of a Malone blaster to get the ball smack in the face, and Ingram did well to stop a curling free-kick.
It was left to Hill to play hero at the end, and not that anyone in W12 will be surprised, but any last vestige of play-off hope disappeared with Sheffield Wednesday claiming a point against Ipswich.