Comment 10 for bug 19711

(In reply to comment #3)
> (In reply to comment #2)
> > (In reply to comment #1)
>
> > > Does anybody know, whether this is normal and expected behaviour or if
this is a
> > > bug?
> >
> > It's kind of expected, as the radeon driver uses bus mastering to send commands
> > to the graphics card when the DRI is enabled.
> >
>
> Well, if it's normal and expected, we can close or at least postpone the report.
> There are certainly more critical bugs (such that lead to system freezes).
>
> Just did not know, whether this was a bug. Somehow it's seemed like a bug, as
> with or without dri modules loaded, I thought there is the same rendering
> happening on the screen if I am idle (no 3D apps running).

well, when the DRI is enabled, the DDX uses the bus mastering for 2D commands as
well, so that will also cause bus master activity. I suppose we could put in
some sort of hack to shut down the CP when DPMS is triggered. I'm not sure if
that's the right fix or not.