Comment 1 for bug 204945

Same here. It does work if I use the binary driver, but I've never had any problems before with the opensource one.

Seen lots of bugs about X300 causing crashes etc, so I can understand why its disabled. However it would be nice if it told you the reason why (rather than turning on effects failed - this could mean anything), and maybe gave you the option to turn it on anyway (at your own risk).