[PREVIEW] Nouveau on FreeBSD

[Anonymous]

Anonymous <swell.k at gmail.com> writes:

> Robert Noland <rnoland at FreeBSD.org> writes:
>
>> On Sat, 2009-03-21 at 09:12 +0300, Anonymous wrote:
>>> Robert Noland <rnoland at FreeBSD.org> writes:
>>> The module works fine but not very usable on my
>>> 9600GT. One thing to note is that NoAccel works *slower* than without
>>> nouveau.ko present at least on my box.
>>
>> That doesn't make any sense...  If the module isn't loaded, or X isn't
>> attached to it nothing is changed.
>
> Yep, I heard same answer from nouveau devs a while ago. But smth in
> xf86-video-nouveau works differently when NoAccel explicitly set in
> xorg.conf and module is present.

I think the source of my confusion is here

	/* Attempt to initialise the kernel module, if we fail this we'll
	 * fallback to limited functionality.
	 */
	if (!NVPreInitDRM(pScrn)) {
		xf86DrvMsg(pScrn->scrnIndex, X_NOTICE,
			   "Failing back to NoAccel mode\n");
		pNv->NoAccel = TRUE;
		pNv->ShadowFB = TRUE;
	}

It turns on shadow framebuffer but does *not* report about it in Xorg.log.
And with DRM present ShadowFB defaults to FALSE, so it's not enough
to turn NoAccel on alone to achieve same effect as without module.