nvidia DMA issue? (Was:Sudden/Frequent 7.2 lockups out of nowhere

[Tuc at T-B-O-H]

Hi,

	Under the regular vesa driver, besides issues with mplayer not
being able to display on the whole screen, and faint blue bars constantly
fading in/out across the entire screen, top to bottom... It works.

	I checked the binaries that had a different date. After a recompile
the binaries matched 100%, so not sure what happened that the datestamp
changed.

	I recompiled the module with debug, and now when I broke this time
I got :


0x284b21d8 in NVSync (pScrn=0x81da000) at nv_xaa.c:303
303         while(READ_GET(pNv) != pNv->dmaPut);
(gdb) bt
#0  0x284b21d8 in NVSync (pScrn=0x81da000) at nv_xaa.c:303
#1  0x295d3085 in XAAPaintWindow ()
   from /usr/local/lib/xorg/modules//libxaa.so
#2  0x0813e4b0 in DamageExtensionInit ()
#3  0x0810d08b in miClearToBackground ()
#4  0x0807e052 in ProcClearToBackground ()
#5  0x081238f1 in XaceHook ()
#6  0x0807be31 in Dispatch ()
#7  0x0806c025 in main ()


	If I attempt to step at line 303 of nv_xaa.c, I get nowhere...

	Is this the right place to be asking about this? I seem to get
dead air from the FreeBSD-X11 list, and haven't heard anything here.

			Thanks, Tuc