nv problems on FreeBSD 6.1-RELEASE for AMD64

[Chris Radlinski]

I took a look at NVSync() in nv_xaa.c.  I found this:

void NVSync(ScrnInfoPtr pScrn)
{
    NVPtr pNv = NVPTR(pScrn);

    if(pNv->DMAKickoffCallback)
       (*pNv->DMAKickoffCallback)(pScrn);

    while(READ_GET(pNv) != pNv->dmaPut);

    while(pNv->PGRAPH[0x0700/4]);
}

Could those while loops be what's sucking up the CPU?  How can I check
that?


On Thu, 2007-01-11 at 09:45, Chris Radlinski wrote:

> I already posted this on the FreeBSD xorg mailing list and they sent
> me here.
> 
> Here's my rig:
> 
> Athlon 4600+ x2
> 4 GB DDR400
> Biostar K8T890-A9 motherboard
> Biostar V6202EL16 GeForce 6200 LE PCIE card
> 
> I installed FreeBSD 6.1-RELEASE 64-bit with Xorg 7.2 RC3 running
> Gnome. If I load the nv driver, things run OK for a while but
> inevitably freeze up. My mouse still works but the rest of the desktop
> is unresponsive. I can ssh from another machine and see that Xorg is
> eating up 100% of one of my cores. I'm having exactly the same problem
> that this guy
> (http://lists.freedesktop.org/archives/xorg/2006-March/013478.html)
> reported in March. I don't have this problem with the vesa driver.
> 
> The last time this happened, I connected to Xorg with gdb and got this
> stack trace:
> 
> (gdb) bt
> #0  0x0000000801d37134 in NVSync ()
>    from /usr/X11R6/lib/xorg/modules/drivers//nv_drv.so
> #1  0x00000008035f3008 in XAAGlyphs ()
>    from /usr/X11R6/lib/xorg/modules//libxaa.so
> #2  0x0000000000506fdf in DamageExtensionInit ()
> #3  0x00000000004fd1df in RenderExtensionInit ()
> #4  0x0000000000445e3d in Dispatch ()
> #5  0x000000000042eae5 in main ()
> 
> What else can I do to help debug this problem?
> 
> Thanks. 
> 
> ______________________________________________________________________
> 
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> xorg mailing list
> xorg at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/xorg
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