[V4L] error running xawtv with bttv2

Hi,

I get the following error when starting xawtv :

X Error of failed request:  BadAccess (attempt to access private resource 
denied)
  Major opcode of failed request:  141 (XVideo)
  Minor opcode of failed request:  13 ()
  Serial number of failed request:  357
  Current serial number in output stream:  359

I just compiled and installed bttv2 and this is my first time to get bttv2 
going. In case I rmmod bttv2 and modprobe bttv, everything works fine.

I'm using redhat7 with xfree4.0.1 (no DRI as of kernel 2.4.0-test10) and I 
use devfs with devfsd. I use xawtv-3.24.

Any hint is welcome.

--
Marcel Janssen