View Full Version : My Geforce 6800 crashes any 3D application

10-06-04, 10:05 AM
By "any 3D application" I really mean *any* application that talks to
hardware accelerated 3D drivers:

In Windows, running the Nalu demo resizes my screen, puts up a small
splash screen, waits for a moment, then pops up an "illegal operation"
error box from "Mermaid.exe" (in CG.DLL), after which the system
is grossly unstable and may or not make it to a reboot before the kernel
or UI start dying.

In Linux, running any GLX program (even glxinfo!) kills the X server
immediately with a signal 11.

I've tried several versions of the most likely flaky hardware/software culprits:
A CompUSA 400W or an Antec 480W power supply
A PNY Geforce6800GT 256MB (both normally and underclocked) or a PNY
Geforce6800 128MB
The 1.0-6111 and 1.0-6106 drivers in Linux
The most conservative BIOS settings I could find.

None of those changes affected the results.

I can run through dozens of memtest86+ runs with no errors.
With only 2D applications running, both Windows (98 first edition) and
Linux (Fedora Core 2, 2.6.8 kernel) are rock solid.
The thermal monitor stays below 70C in 2D, and the 3D crashes are nearly
instant, before the card could heat up.
In Linux, after the x.org server dies it restarts and the system is stable.

Has anyone else seen a problem like this? Google doesn't seem to think so
(although there are loads of people experiencing flakiness a few seconds
or minutes into 3D-intensive games), but I'm hoping someone out there
knows something. If anyone has any suggestions for more things I could
try, I'd appreciate it. PNY's technical support is useless; there's no
tech support email address and I'm still waiting for the "more than 20
minutes" I was told it would take before a human being returned my voice
message yesterday.

The rest of my hardware looks like:

Syntax SV400 motherboard (Via KT400 chipset)
Athlon XP 2600+ CPU
512 MB RAM
PVR-250 video capture card
SB PCI 512 sound card (with MB sound disabled)
Promise Ultra133 TX2 IDE card
LNE100TX ethernet card (in addition to MB ethernet)

Thanks in advance for any suggestions,
Roy Stogner

10-24-04, 09:56 PM
I'm having all kinds of lockup issues in Linux, its because the KT400 chipset hates our 6800 series cards. :(

10-24-04, 11:36 PM
Im on a KT400 chipset and things are rock solid, i did experience such problems before so I could not get any 3d app to work for more then 5 minutes, But that turned out to be the added stick of ram not being compatible with the old one, so I got a second one and now things is rock solid.

10-24-04, 11:46 PM
Had a problem like this once. Did a reformat without the video capture card and everything was fine.

10-25-04, 07:44 AM
If your memory is OK and the temps are OK, the only thing I can think of is power, my Gainward 6800 GT had a leaflet with it that said Gainward recommended a 480W supply (note that this is a GT not an Ultra), you're also supposed to have nothing else on the 12V connector that plugs into your 6800. as far as the stuttering etc at the beginning of 3D games goes, that's fairly common due to the sheer size of files involved in modern 3D games, the only way to fix that is to increase the amount of RAM you're using.

The mermaid problem is weird, unless the download was corrupted, have you tried Start>Run>Dxdiag to make sure all your DirectX stuff is OK?

04-16-05, 08:10 PM
had the problem with Nalu, Timbury, and Clear Sailing all hanging at the splash screen.. I could hear music.. but GLUT was running, and didn't do anything.. I tried every single Forceware driver. its not the driver.. I HAD to set the AGP Aperature Size to 256mb.. it was set by default as 4mb.. I was also overclocking my PC from 2.8 to 3.2ghz. i clocked it back down when i made the AGP setting change. That may not have had anything to do with my resolution.. but all the demos run great now...