Analog onboard-VGA output permanent enabled (15Pin d-sub)

Analog onboard-VGA output permanent enabled (15Pin d-sub)
Analog onboard-VGA output permanent enabled
(15Pin d-sub)
at Intel 855/945GM Chipsets
( Windows XP )
The analog VGA port from Intel 855/945GM chipset is implemented as secondary output.
If the PC will be powered on without an analog VGA-Monitor connected, the analog VGA port is set to
standby mode for power savings by chipset. Therefore no VGA-signal can be received from this port.
To avoid this, the following workaround can be applied. The Monitor can be activated by pressing
CTRL-ALT-F1 alternatively.
At first a Bios-Setting has to be made.
For Bios-Access press [del]-button after System is powered on. Navigate through
Advanced Chipset Features Boot Display and set value to [CRT] as the case may be
[CRT only]. After, press [ESC] and choose [Save & Exit] on Bios entry page.
After all drivers (Chipset-, graphics driver etc.) have been installed from the delivered CD,
just do as follows:
- Navigate to Start Control Panel System tab Hardware
and click to Device Manager.
- Open the component Display adapters and disable (not uninstall) with rightclick the
first device.
Confirm the following questions that the device must be disabled.
Restart the system.
After restart, check in device manager if primary display from graphics port has been
disabled. This is indicated by a red cross.
After the first device has been disabled, onboard-VGA doesn’t switch to standby if the system is
started once without a monitor connected.
Notice: This workaround is for Windows XP only. For Windows 2000 we recommend
use of a 75 Ohm dummy connector at VGA-Port.
DSM Computer AG
technical support
JaNo, 19.10.2007
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