Dell Inspiron 4000 and external monitor

Hi,
I've been happily using my Dell 4000 laptop with X version 4
using the vesa driver for over a year now. I also use a 1024x768
external flatscreen.

Our company just purchased 1280x768 flat screen monitors.

I've been unable to get X to let me go to 1280x1024. It seems to
want to default to the 1024x768 of the LCD on the laptop, no matter
what I tell it. Setting the mode to 1280x1024 just makes it go
to a virtual screen size of 1280x1024, even though I haven't specified
a virtual screen in the XF86Config. The actual scan stays at 1024x768.

I'm using the vesa driver because the LCD/CRT switching in the
ati driver doesn't work properly (You have to switch to LCD after
putting the laptop in the dock every time). I've tried the ati
driver at 1280x1024 with no luck also.

I can't find any good documentation on the vesa or ati drivers that
mention how to accomplish this.

Anyone have any experience in these areas? Google searches haven't
shown up any thing.

Jim Durham




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