[gentoo-user] severe tearing and system lockup

[gentoo-user] severe tearing and system lockup

[Iain Buchanan]

Hi all,

I've had this problem with various nvidia-drivers and never been able to
track it down.  AFAIR it only happens during certain (one?) xscreensaver
hack.  One of the 3d ones, but not necessarily one named GL*

When the hack starts, I see multiple tears every 1-2cm (10-15 in all),
each one offset to the right by the same amount.  The colours look
inverted, or neon.  The screen is "frozen".

I can ssh in and initiate a shutdown, although it doesn't complete; or I
can use the magic sysrq key.  When the shutdown locks up, I can't use
sysrq.

Perhaps this is related, but when I run MoebiusGears with the settings
maxed I can get performance like this:
FPS:   220
Load:  100
Polys: 12000+

but sometimes on a different instance the FPS drops drastically to <90.
Don't know why.

I have:
nVidia Quadro FX 1600M (laptop)
2.6.32-tuxonice-r1
x11-drivers/nvidia-drivers-190.53-r1
x11-wm/compiz-0.8.4
x11-base/xorg-server-1.7.4

any ideas? thanks,
-- 
Iain Buchanan <iaindb at netspace dot net dot au>

Harp not on that string.
		-- William Shakespeare, "Henry VI"