Just installed vanilla Xubuntu 12.04 LTS & updated on a ThinkPad E325 with Conexant CX20671 sound card. I notice volume hotkeys work under Xubuntu DE but not under XFCE. Sound settings are completely missing under XFCE.

Bubble bar invoked by +/- hotkeys, is greyed out; though volume slider that resides in system tray still functions. Muting/decreasing/increasing volume with hot keys has no effect.

Is there a workaround? If not what package would I report a bug against?

PS: I'm running 64-bit.

PPS: It just goes through the motions under XFCE DE, GUI volume will rise & fall, but actual audio will not change. (This is due to hotkeys being mapped wrong; see below.)