640x480 @ 60Hz displayed as 656x496 @ 60Hz

[danvitek]

With display setting 640x480 60HZ, the outputted format is actually 656x496 60Hz.
XP SP3 with the latest GMA500 6.14.11.1016

I need exactly 640x480 for my LCD panel.

72Hz has the same problem. 75Hz is OK but my panel(controller) does not accept 75Hz.

Tried to install xp-display-iegd-10_1-090719 without success.
Wonder if that will cure the problem?

Any other suggestions?

[AoRaToS]

Did you remove the GMA driver before attempting to install IEGD?

[danvitek]

Thanks,
your question solved my problem.

Uninstalling the GMA driver and using the standard driver in XP allowed me to run 640x480 @ 60Hz.

[AoRaToS]

Glad it worked for you!