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shamrin

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Acer 1916W can't show at native resolution

I have two monitors, an old 19' Gateway CRT and a 19' Acer AL1916W LCD, both connected to a Radeon X550 video card. I am dual booting between XP and Windows 7.

At one point everything was working fine, the CRT operates at 1600x1200 and the LCD at 1440x900. However, often after I have been running XP and I boot back into Windows 7, the LCD display does not fill the whole screen. It naturally wants to sit over to the right with about 3 inches of black on its left. If I fiddle with the controls, I can get the display to sit about in the middle of the screen with approximately equal amounts of black on either side.

Windows 7 insists that the LCD is in 1440 x 900 mode. If I bring up the Acer menu on the screen, it says 1440x900 as well (along with H:55Khz V:59Khz). But the screen is not filled and the display seems to be squashed horizontally and a little fuzzy to boot.

I have hit the "Detect" on the Win7 display to no effect. I have switched the connections for the two monitors also to no effect. Ironically, almost every other resolution I choose will fill up the screen accept the native 1440 x 900.

I've fixed this problem before by a lot of random fiddling and rebooting but I can find no sure way to diagnose or correct the problem and have run out of steps. Any suggestions?
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Ubertam
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shamrin

ASKER

The only effect that clicking on "Auto" seems to have is to move the display over to the right so the black area on the left is much bigger. It does say that it is "Auto config" - uring.
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ASKER

Hang on, if I do a "Detect" in Windows 7 now, the display corrects itself to the proper dimensions. Let me see if I can replicate the problem and the fix and I'll come back to the thread and report.
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ASKER

I have tried a number of times to replicate the problem and can't do it on demand. Though I should go ahead and award the points since the problem seems to be solved and I'll forget otherwise. Thanks.