3.3 FIFO problem

[Clifford B Miller]

Recently we installed 3.3 on a 280-GTX.  I have tried porting a graphics
program (which had been originally developed under 3.2) over to this new
machine, and recompiled it on the 3.3 machine.  This program's purpose
is to display a GIF-format image in a NeWS window on the graphics console.
However, for unknown reasons, this program blanks out the graphics screen
entirely and won't respond to any console input.  Trying to telnet in from
elsewhere, one is unable to kill either the graphics process itself
or the graphics console daemon (even as root -- I tried everything).
To regain control over the machine again you actually have to do a hardware
reset!

A look at SYSLOG suggests that it has something to do with the graphics
FIFO getting filled up.  However, this never happened under 3.2 (and in
fact the 3.3 machine I ported to had four times as much memory).
Is there any simple reason this might happen?  Would it be specific to
the graphics calls that I make in the program?  I haven't been able to
really delve deeply into the 3.3 graphics docs, but so far in my reading
haven't come across anything that helps me on this.  Any suggestions?
If so please send me e-mail (cliff at research.nec.com -- also replying
to this address at phoenix will work).

Thanks! 
--Cliff

 Clifford B. Miller, Research Associate / Systems Administrator
 NEC Research Institute, 4 Independence Way, Princeton, NJ  08540
 Internet: cliff at research.nec.com		phone: (609) 951-2688
 UUCP: ...princeton!necserve!cliff