Ubuntu 12.04 can not set wlan0 into monitor mode in wireshark 1.6

I can set wlan0 into monitor mode by: iwconfig wlan0 mode monitor. However, I can not check the box of capture packets in monitor mode in wireshark.

The error is "The capabilities of the capture device "mon0" could not be obtained (That device doesn't support monitor mode). Please check to make sure you have sufficient permissions, and that you have the proper interface or pipe specified."

I also tried airmon-ng start wlan0, the same error happened on mon0.

Same error happened on iwlagn, iw4965 and rt2800 usb driver.

How can I do? changed another wireless cards? thanks