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Date: Fri, 9 Jan 2009 09:30:09 +0100
From: Roman Divacky <rdivacky@freebsd.org>
To: "O. Hartmann" <ohartman@mail.zedat.fu-berlin.de>
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Cc: Garrett Cooper <yanefbsd@gmail.com>,
	FreeBSD Current <freebsd-current@freebsd.org>
Subject: Re: X becomes unresponsive with nvidia / xscreensaver and desktop
	panics
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> I have and I had the same in FreeBSD 7.0/7.1 and now with 8.0-CUR with
> both a NV8600GTS and an older NV6800GT. A very old NV6600 never showed
> up these lockings when I used that PCIe-Card with FreeBSD 7.0/7.1, but
> I'm not sure. The locks came spontanous, sometimes after heavy usage of
> 'mplayer', but sometimes instantanously after the destop showed up.
> 
> On those boxes, there is no Linux emulation and no Linux BLOB (useless,
> due to 64 Bit). I swapped the 'nv' driver on all FreeBSD boxes with
> 'vesa', because there is another issue with sprites/graphics buffers
> many times reported using FireFox.
> 
> When the display got locked, sometimes I had the chance opening a ssh
> session killing Xorg/xdm and restarting working, but by the end, that
> was when changing towards 8.0-CUR, this 'trick' didn't work anymore. On
> FBSD 7, Xorg was eating up 100% CPU time.

exactly my situation. I noticed that when the machine stucks while starting
X I am sometimes (~ 60%) able to ctrl-alt-backspace and it after some minutes
kills the X (= some sort of livelock?), after that I can 100% start the X
successfully...