Comment 7 for bug 144758

OK, with the stock Xgl-session, my ~/.xsession-errors says:

  Starting Xgl with options: -accel xv:pbuffer -accel glx:pbuffer -nolisten tcp -fullscreen -br +xinerama

comparing that with what I posted, I see that I passed the following additional arguments:

  :1 -- which screen to run on
  -ac -- disable access control restrictions
  -nolisten tcp -- don't serve remote windows?

and

   "-accel xv:fbo" rather than "-accel xv:pbuffer"

which doesn't seem like a very likely candidate. I could try to force it to use the same command, but I'm beginning to suspect that either this has to do with the explicit specification of :1 in the old version or that the "exec $@" at the end of Xgl-session doesn't end up doing the same thing. Will diagnose further.