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HDMI is digital
VGA (the 15 pin connector) is analog.
If your connector has the digital to analog interface it should work, but likely it does not have that chip and thus will not work.
Your description of the problem tells me it may never work as you have it connected. Possibly it might be that the monitor is required to be powered on before the laptop is booted, but that only works in some cases.
I have also seen some work if a 2-step connector is used.
VGA to DVI connector, followed by DVI to HDMI connector.
DVI was the step toward digital that came before the HDMI standard was implemented and was only partially digital. DVI and VGA do not carry control signals nor audio. HDMI carries both those as well as the video.
YMMV but I think it would be cheaper and more efficient to actually purchase a monitor with a digital input (HDMI or DVI).
Without the digital/analog converter interface a digital output device (your laptop with HDMI out) can never operate an analog device (your Dell monitor with VGA input).
I see that this monitor has a DVI input, in additon to the VGA input. I suggest getting a suitable cable to use the DVI input, to see if the fault replicates. If it doesn't, you have identified the problem - an issue with the analogue signal processeing circuitry in either the monitor or the computer. The monitor's auto sleep analogue circuitry, for example, may not be sensing a signal, and going to sleep. BTW, if you use a DVI-DVI cable, you avoid the video signal ever going through an analogue stage, and the image will also be purer.
DVI ==> Digital Video Input
If your monitor has both DVI and VGA inputs, and your PC's video-card has both DVI and VGA outputs, then buy a DVI-to-DVI cable, and use it, for a better picture.
If your monitor has both DVI and VGA inputs, and your PC's video-card only has VGA output, then use a VGA-to-VGA cable. Or, purchase a video-card with DVI output, to replace the video-card with VGA output, and then use a DVI-to-DVI cable.
you can use on all vga cards(you dont need any special controler), this monitor has a USB hub and its is detected normaly on winxp or above, and the vga cards detect the monitor auto. i give you the monitor specs, take form website
OSD LanguagesFrench , German , English , Spanish , Japanese
Display Screen CoatingAnti-glare , Hard coating
Signal InputDVI-D, VGA
FeaturesPicture by picture , Picture in picture
Analog Video SignalRGB , S-Video , Composite video
Digital Video StandardDigital Visual Interface (DVI)
Expansion / Connectivity
Interfaces1 x VGA - 15 pin HD D-Sub (HD-15) , 1 x DVI-D - 24 pin digital DVI , 1 x Composite video input - RCA , 1 x S-video input - 4 pin mini-DIN , 4 x Hi-Speed USB downstream - 4 pin USB Type A , 1 x Hi-Speed USB upstream - 4 pin USB Type B
Flat Panel Mount Interface100 x 100 mm
FeaturesSecurity lock slot (cable lock sold separately)
Compliant StandardsCE , CCC , MIC , NOM , PSB , BSMI , GOST , SASO , NEMKO , TUV S , C-Tick , TUV GS , EN55022 , TCO '99 , EN 60950 , ICES-003 , TUV Ergo , UL 60950 , IEC 60950 , EN 61000-3-2 , EN 61000-3-3 , FCC Part 15 B , VCCI Class B ITE
FIX for design fault of ASUS VW222u Problems with monitor using dvi while vga works fine. my ASUS VW222u had the same problem many are reporting after about 8 months with developing colored "noise" onscreen or dancing red pixels while using dvi but vga is fine.
my old man is an electronics engineer, rather than be without a monitor
since vga still works fine we decided to have a look.
we worked out the problem. note: this is a fix for the random picture noise problem while using dvi port.
If monitor works ok with vga but dvi has noise then this fix should work for you.
1.open monitor (will void warrenty) 2.unplug
all the the cables going to the power supply and dvi port assembly,
undo two screws pull down and out you wil now be looking behind the dvi
port and be holding a metal module that contails power supply and dvi-
and vga port.
3.you will notice a piece of brass foil joining
the earths on your dvi and vga cable this is the problem creating an
"earth loop" as both vga and dvi ports are earthed to the metal casing
this extra earth is causing the problem introducing noise.
unwrap the brass foil from the two cables and seperate, insualte cables
with electrical tape. (wrap around each one seperately they should now
be indiivdual cables)
4.you will notice a silver spring type peice of metal on the assembly that pushes against the main
body of the unit when re-assembled. scratch the metal with a
screwdriver where this peice pushes so you get a good connection when
you reassemble it, do not touch as finger grease could screw up the
connection. (this step is not vital just a good thing to do why your in
there to make sure the the unit is properly earthed)
fixed mine and was quite easy, take care with the plastic latches they
are tight - ensure you remove all 5 screws, to see the fifth easily the
monitor stand must be removed (two screws then stand slides out from
rear of case)