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Re: Hard crashes with device,/retain=2 ?? [message #34911 is a reply to message #34670]

Fri, 25 April 2003 10:39

condor
Messages: 35
Registered: January 2002

Member

This is posted mostly for reference for those poor souls who run into
the same problem in the future and google for it and wonder what
actually helped.

dmarino@digitalglobe.com (dmarino) wrote in message news:<1c23e5f8.0304080600.51f5f77f@posting.google.com>...
> It turned out the Nvidia cards had some kind of 30 bpp mode
> running that wasn't a valid color class for IDL. Maybe some
> games and scanners can use 30 bpp? I never saw a 10/10/10 bit
> display before.

I think this part is covered by appendix D in the nvidia driver
README:
Option "Dac8Bit" "boolean"
Most Quadro parts by default use a 10 bit color look
up table (LUT) by default; setting this option to TRUE
forces
these graphics chips to use an 8 bit (LUT). Default:
a 10 bit LUT is used, when available.

> One other thing we tried that seemed to help, there's some settings in
> your XF86Config file that deal with off-screen memory pixmaps. Turn
> them on and off and see what happens. I think having that enabled and
> using retain=2 may cause a conflict.

As it turned out, none of this made a difference. What helped finally
was the following two lines in the "Screen" section of the XF86Config:

Section "Screen"
Option "backing_store"
Option "save_unders"

Yes, the "Screen"-section, not the "ServerFlags" section. No, this
does not seem to be documented anywhere: I got this from a usenet post
and the poster admitted that he got that from a usenet post as well.
It sure isn't anywhere in 'man Xserver', 'man XF86Config', the nvidia
driver documentation or the www.xfree86.org web site.

I am now running with the default "retain" and after a couple weeks of
almost daily crashes, I haven't had one in almost a week, so I'm
assuming this is what needed fixing.

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[Message index]

		Hard crashes with device,/retain=2 ?? By: condor on Thu, 20 March 2003 10:22
		Re: Hard crashes with device,/retain=2 ?? By: Karl Schultz on Wed, 26 March 2003 08:43
		Re: Hard crashes with device,/retain=2 ?? By: dmarino on Tue, 08 April 2003 07:00
		Re: Hard crashes with device,/retain=2 ?? By: condor on Fri, 25 April 2003 10:39
		Re: Hard crashes with device,/retain=2 ?? By: Nigel Wade on Wed, 26 March 2003 03:48
		Re: Hard crashes with device,/retain=2 ?? By: condor on Mon, 07 April 2003 14:38

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