Another problem getting 1680x1050

[zortapa]

I have a Toshiba Tecra A4 (Mobile 915GM Express) with an onboard LCD panel with a native resolution of 1680x1050. I recently purchased a Samsung 226BW monitor that also has a native resolution of 1680x1050. Since my laptop already runs at this resolution, I assumed that it would work with the montior.

But I was wrong.

Even though I could select 1680x1050, the laptop would only send 1280x1024 to the monitor. After reading the many helpful posts in this forum, I finally got the external montor to work by changing the resolution in DTD_1 of the registry to 1672x1050. It seem that Toshiba is blocking 1680x1050.

But while I can get the external monitor to work now, I still have a problem. Every time I reboot, it returns to 1280x1024 and I need to change the properties to get back to the native resolution.

Does anyone have any ideas about how to SAVE these settings so i don't need to change the resolution every time I reboot this computer?

Thanks!

-Eric

[Aaron_B_Intel]

Most likely if you prevent the igfxpers.exe service from starting up at boot, you will be able to retain your settings.

[zortapa]

Thanks, Aaron.

Can I do this by a) renaming this file? b) editing the registry? c) changing/setting some intel setting? d) other? Perhaps this is documented somewhere?

-Eric

[Aaron_B_Intel]

Yep. You can rename the exe file and it won't be called. Others have taken its activation out of the registry. Either way works.

[zortapa]

I have tried renaming the file and editing the registry directly, but my computer still jumps back to 1280x1024. I've been thinking about creating a new VBIOS using IEGD. Any thoughts about going this route?

-Eric

[Aaron_B_Intel]

Worth a try. Usually disabling persistence works. Sorry that it didn't in your case.

[zortapa]

When is persistence applied by the OS? I ask because upon boot-up, my system keeps the LCD as the active primary monitor for about 2 minutes. Sometimes I even start to work on it before it switches to an extended display with my LCD being down converted to 1280x1024. If, as I expect, persistence is applied much sooner, then there might be something else that is modifying my display setup. Initially I suspected PowerStrip, but I have removed that from my system and the symptions continue.

-Eric