Colors on a Display on displayport are washed out

[lkubler]

Hi,

I have a user running an HP Compaq Pro 6300 SFF and Windows 7 Pro, all the latest patches.  We attached a second monitor to the display port using a displayport to VGA adapter cable and the image is all washed out.  Things that looko light grey on the VGA port look white on the displayport.  I've tried three different monitors, two HP L1911's and one L1910.  All look the same, washed out on the displayport but look fine on the VGA port.

I also tried two different displayport to VGA adapters.  The adapters are HP DisplayPort to VGA Adapters, p/n: 752661-001, purchased recently.

Any suggestions?  We tried playing with the monitor settings but couldn't make it any better.  Are there any settings in the system I should try?  Different drivers perhaps?

Thanks in advance,

Linn

[lkubler]

Update: Tried running the monitor calibration in the Display control panel and found I could not adjust the Gamma sufficiently to reach the "Good gamma" settings.  Could not adjust the contrast sufficiently to be able to see the man's shirt buttons either.

Still seeking a solution.

Linn

[lkubler · Accepted solution]

Solved, I think(?)... Talked to HP Tech Support and it turns out the HP DisplayPort Adapter we were sold isn't compatible with the model computers we have, go figure.  Never would have guessed an adapter like this could have compatibility issues beyond the connector types.

Pulled an older adapter from another computer of the same modle and it looks much better.

Am now waiting on my vendor to get back to me about an exchange.

Linn