Parhelia purple distortion

[Michel]

I have my Parhelia several weeks now and since yesterday i get purple distortions.

I have tested lower agp speeds, older drivers, possible overheating but nothing seems to help.

This distortion only occurs when Parhelia drivers are installed. When uninstalled and using the Windows default vga-driver i have no distortions.

What could be the problem here??


I took some screens:

[ZokesPro]

WOW!!

There might actually be something wrong with the card!

[K6-III]

I'm thinking bad memory on the vidcard...but that would effect it mostly during gaming...weird...

[Michel]

I left my computer on while i went shopping en when i came back i noticed that the distortion was less than before.

It was only visible on desktop (all apps minimized) and on the windows startbutton.
Changing resolution didn't change the situation, but reapplying the desktop wallpaper did!

Now the distortion has dissapeared i see that the screenshot's i posted aren't exactly the same as what i saw on my screen.

In the bottom screenshot the complete left side was normal. Only the right side had distortion. I don't know why that didn't show on the screenshot. I took it with alt-printscreen and pasted it in photoshop to save it as a gif.


The only place where i still have distortions are in windows-slider buttons:


If it's a vid-memory problem shouldn't i get it all the time?

*edit: I think the distiortion of the sliders where still in memory or something. If i move the sliders the distortion dissapears.
And I just ran the UT2003 demo benchmark without any problems.

So the good news is my screen is completly purple distortion free
Bad news is I don't have a clue what happened or what solved it.

[K6-III]

Very strange...

[Faramir1966]

Hi there

Try disabling or uninstalling Coloreal.......
That might help......

[UtwigMU]

If you can capture it, means that it's in the framebuffer allready and the data proabably got mixed up by the drivers.

If the data would be correct and would have been corrupted in the ramdac or even monitor, your captures would look normal

It's possible that memory corruption occurs because of natural radiation, hence servers use more expensive ECC memory.

I'd reinstall/reimage Windows just to be on the safe side.

[az]

I think it's a software fault. Probably the drivers, windows, or something that fudges with the video (like coloreal, for instance).

If it isn't too much of a hassle, try a windows reinstall.

[R0M]

Michel,
Check your Y-Cable it might be loose,
Regards,

[az]

Would this give that kind of distortions in the framebuffer, being able to grab them by just normal screenshot methods?

AZ

[Ant]

I've seen similar problems and they were due as ROM states to lose cable connections either onto the P itself or to the Y-cable.

[diewlei]

woh!

[Michel]

I've been away this week and now after browsing for 30 minutes the purple distortion is back

Rom or Ant: What do you mean with the Y-cable?
I only use a single head with the dvi-dsub converter thingy.

And if it's a loose cable, wouldn't the screenshots be clean?

Somehow I don't think reinstalling windows will do anything, because i don't get the distortions when is use the default vga driver. I only want to reinstall as last resort.

I'm pretty clueless here.

[Greebe]

It is possible that your P has a hardware issue... please post on Matrox's forums nd see what they think

[CHHAS]

Completely off topic and all, but Greebe I love that quote.