twitching image

Csillag Kristof csillag.kristof at
Tue Oct 13 19:19:22 PDT 2009

Csillag Kristof wrote:
> Furthermore, [...] there were some random red dots scattered on the screen, appearing and disappearing back to nothingness, really fast.
> (Something like static on the TV screen, but only in red,
> with fewer artifacts, scattered over the normal image.)
> I have changed the DVI cable, and the red dots went away,
> but the twitching has remained.
> What could be the reason for this?
> I know the monitor can be driven via DVI, since it works flawlessy
> with my office notebook (which has an NVIDIA chip built in.)
I have just seen the same error with the NVIDIA notebook (although on a
much smaller scale), and removing the DVI switch from the equation
"solved" the problem.

So, the red-dots error has nothing to with the driver; this is just a
signal transmission error.

(One less problem on the software side.)

   * * *

On a side note, can someone suggest me a DVI switch which works
reliably, and doesn't cause this kind of problem?

(Ideally it should have 4 inputs and 2 outputs, mechanical rotating
switch, but anything else will do, as long as it works.)


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