Help with Laptop Projection

Revision as of 13:21, 22 October 2010 by Petar Mitrevski (talk | contribs)

PC laptop projection problems

If a laptop is connected through the VGA cable to the projection system and there is no image on the screen:
1) Press and hold Fn, then press F8 (Dell laptop method) to toggle between the available display modes. There are normally three display modes available; laptop display only, laptop and projected image, or projected image only. Please be aware that switching between modes can take a few seconds to occur.
2) If the above does not correct the problem, be sure the laptop is connected correctly and then reboot.

If the projected image is displaying wallpaper and the laptop display is normal, see Projecting from a Laptop you can only see your wallpaper or desktop and nothing else.

Should the projected image be off-color, blue or yellow tint, or is off-center, have the caller adjust the blue (possibly black) knob, Horizontal Position, on the Inline interface. The Inline interface is normally located above the top surface of the lectern and can be identified by following the VGA cable that is connected to the laptop computer. The Horizontal Position control should be slowly rotated while watching the projected image.

If the projected image is cut off on the sides or bottom, first check the resolution in Control Panel, Display and Settings. Should the display be set to 1280 x 1024 (SXGA, 5:4 aspect ratio), resetting to 1024 x 768 (XGA, 4:3 aspect ratio) should correct the problem
1280 x 1024 (SXGA) is a squarer image and will not display correctly when projected onto a 4:3 aspect ratio screen.
Name Pixel array Aspect ratio Comment
VGA 640x480 4:3
SVGA 800x600 4:3
XGA 1024x768 4:3
WXGA 1365x768 16:9 Wide-XGA; used for wide screen LC TV displays (beware: sometimes 1280x768 is called WXGA)
SXGA 1280x1024 5:4 This format is "squarer" than the others
UXGA 1600x1200 4:3
QXGA 2048x1536 4:3

Laptop Projection Shortcuts

Dell: Fn+F8 (or F6)

Apple: Command (that's the apple key) + F1 or F7

PC Laptop Audio & Displayport Problems

When you are trying to project from a PC Laptop using the HDMI or DisplayPort, this function is trying to send the video and audio signal through the same cable (HDMI or DisplayPort). In situations where the audio and video are on a separate cable, this is not going to work because you will not have any sound.  

You will need to change the default adio settings. Go to:



Contrl Panel

Sounds and Audio Devices


Then under the Default Device selct the IDT Audio option. 

Click apply and then Yes to save new settings.  

NVIDIA Control Panel Settings

If users of the new Windows laptops (such as the E6400’s) have trouble with projection after using techniques such as Fn+F8, adjusting screen resolution, etc., have them try the following:

1. Right-click the desktop and select NVIDIA Control Panel from the pop-up menu. The NVIDIA Control Panel dialog box opens.
NOTE: The first time another dialog box will open – select Standard and then click OK.
2. On the Select Task pane on the left, under Display select Set up multiple displays or Change display options.
3. Select The same on both displays (clone).
4. Click Apply.
5. Click Yes to save the changes.

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